 Patent Application Title |
Patent App Num. |
Date |
| Image forming device and cartridge | 20110020032 | 20110127 |
| An image forming device is described according to an aspect comprises: a photoconductive drum; a developing roller opposed to the photoconductive drum; a developer container; a cartridge; a second portion; and a second terminal. The cartridge comprises: a cartridge frame; a memory unit; a first portion disposed at an upstream portion in a vicinity of an upstream end in an attachment direction of the cartridge frame; and a first terminal disposed at least a part of the first portion and electrically connected to the memory unit. The second terminal is disposed at least a part of the second portion to contact with the first terminal and electrically connected to a controller disposed in the main body. One of the first portion and second portion receives the... |
| Charging device, image forming apparatus, and method of maintaining gap between charging roller and photoconductive drum | 20110013938 | 20110120 |
| According to one embodiment, a charging device includes a charging roller and gap maintaining members. The charging roller includes a conductive roller to which charging voltage is applied and a coating layer as a member for covering the outer circumferential surface of the conductive roller, ends of the coating layer being further extended by predetermined length along an extending direction of the conductive roller than end faces of the conductive roller. The charging roller charges, in a non-contact manner, a photoconductive drum arranged near the charging roller with the charging voltage applied via the conductive roller. The gap maintaining members are respectively fixed at both ends of the charging roller in positions spaced apart from the ends of the charging roller. The gap maintaining members are... |
| Developing device and image forming apparatus including the same | 20110013929 | 20110120 |
| A developing device includes a housing containing toner having an opening at a side thereof, a developing roller supplying the toner supplied through the opening to a photoconductive drum, and a regulator contacting the outer circumference of the developing roller to regulate the amount of the toner supplied to the photoconductive drum. The housing also includes a lower frame having both side portions and a lower end portion respectively forming both edges and a lower edge of the opening in a lengthwise direction, and an upper frame welded and coupled to the lower frame and including a leading end portion forming an upper edge of the opening and a recess portion recessed from the leading end portion at both end portions of the leading end portion... |
| Developing device and electrophotographic image forming apparatus including the developing device | 20110013925 | 20110120 |
| A developing device detachably coupled to an electrophotographic image forming apparatus which includes a housing including a photoconductive drum and at least one roller; and an electrical contact member disposed in the housing, connected to the at least one roller, and formed of a conductive metallic plate to provide an electrical path between the at least one roller and a power supply when the developing device is attached to the electrophotographic image forming apparatus, wherein the electrical contact member includes a base including a coupling unit to engage with the housing, a first elastic member to bend from the base in a first direction; a second elastic member to bend from the first elastic member in a second direction and including a contact to contact the... |
| Developing device and image forming apparatus employing the same | 20110002708 | 20110106 |
| A developing device has a housing including a toner container containing toner, and a developing unit. The developing unit includes a developing roller and a photoconductive drum, and a barrier member including a toner supply window. The barrier member is combined with the housing to separate the toner container and the developing unit from each other. The developing unit also includes a blocking film that is attached to the barrier member to block the toner supply window. An end of the blocking film is exposed outside the housing through an opening formed in a sidewall of the housing. A bottom surface and first and second side surfaces of the barrier member are attached to a bottom surface and first and second side surfaces of the housing... |
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| Optical beam scanning apparatus, image forming apparatus | 20100328731 | 20101230 |
| In an optical beam scanning apparatus and an image forming apparatus equipped with the optical beam scanning apparatus of the present invention, plural optical members that irradiate scanning lines by laser beams (beams) emitted from plural light sources individually onto corresponding photoconductive drums are disposed within an optical unit housing and a housing cover, a fixing mechanism configured to fix part of a parallel plate provided within the optical unit housing and the housing cover is provided, and a twist angle adjusting mechanism configured to adjust an angle of twist of the parallel plate by rotating, in a specific direction, the parallel plate having the part thereof being fixed with the fixing mechanism is provided. According to the optical beam scanning apparatus and the image forming... |
| Apparatus for applying an acoustic dampening coating to the interior of a xerographic drum | 20100326352 | 20101230 |
| This is a photoconductor and dispenser assembly and system. The photoconductor is in a tubular form so as to accept a tubular formed dispenser within its hollow portion. The dispenser will coat within this hollow portion a uniform coating of an acoustical dampening material. This material will dull any sound produced by the photoconductive marking system. The assembly is the tube having in its hollow portion this dispenser. The dispenser fits tightly but movably within the hollow portion.
... |
| Image forming apparatus, method of handling the image forming apparatus, and method of packaging the image forming apparatus | 20100316409 | 20101216 |
| Disclosed are an electrophotographic image forming apparatus including a detachable development cartridge having arranged therein a photoconductive drum and a developing roller for forming a toner image through a development nip formed between the photoconductive drum and the developing roller. The development cartridge may include a development nip control member that can switch between a first position, in which the development nip control member causes the photoconductive drum to be separated from the developing roller, and a second position, in which the development nip control member causes the photoconductive drum to be in a pressing contact with the developing roller so as to form therebetween the development nip. The development cartridge may be mounted in the main body of the electrophotographic image forming apparatus with its... |
| Writing device and image display apparatus | 20100315385 | 20101216 |
| A writing device includes: a voltage application unit that applies a voltage to a display medium including a first display layer, second display layer and a photoconductive layer; a first obtaining unit that obtains image data showing an original image; a controller that controls the voltage application unit and the irradiating unit to cause the display medium to show an overlapped image including the obtained original image and an overwritten image overwritten on the original image, the overwritten image including a point corresponding to the location shown by the location information stored in the storage unit.
... |
| Terahertz frequency domain spectrometer with frequency shifting of source laser beam | 20100314545 | 20101216 |
| An apparatus for analyzing, identifying or imaging an target including first and second laser beams coupled to a pair of photoconductive switches to produce CW signals in one or more bands in a range of frequencies greater than 100 GHz focused on and transmitted through or reflected from the target; and a detector for acquiring spectral information from signals received from the target and using a multi-spectral heterodyne process to generate an electrical signal representative of some characteristics of the target. The lasers are tuned to different frequencies and a frequency shifter in the path of one laser beam allows the terahertz beam to be finely adjusted in one or more selected frequency bands.
... |
| Photoconductive device, and terahertz wave generation and detection apparatuses each using the photoconductive device | 20100310976 | 20101209 |
| A photoconductive device includes: a photoconductive layer configured to generate carriers upon irradiation with excitation light, a first electrode arranged on the photoconductive layer, a second electrode arranged on the photoconductive layer with a gap between the first and second electrodes, and a third electrode arranged in a region over which an electric field caused by voltages applied to the first and second electrodes or an electric field caused by irradiation with a terahertz wave extends. A depletion layer of the photoconductive layer is controllable by a voltage applied to the third electrode.
... |
| Image forming apparatus | 20100310274 | 20101209 |
| An image forming apparatus includes: a photoconductive member; a light irradiation unit located below the photoconductive member and configured to irradiate light on the surface of the photoconductive member and form an electrostatic latent image; a developing unit configured to supply a developer to the photoconductive member and form a developer image corresponding to the electrostatic latent image on the surface of the photoconductive member; a transfer belt configured to move between a first position where the transfer belt comes into contact with the photoconductive member and a second position where the transfer belt separates from the photoconductive member and transfer the developer image on the photoconductive member onto a sheet; a driving mechanism including a rotating lever and configured to drive the transfer belt between... |
| Image processing apparatus, image processing method, and computer- readable recording medium storing image processing program for generating color tone correction parameter | 20100309498 | 20101209 |
| An image processing apparatus is disclosed that includes a printing procedure request portion configured to request printing of color tone image data in a state where a patch row is arranged in a direction almost parallel with a main scanning direction; an image data obtaining portion configured to obtain scanned color tone data, showing scanned value of the patch row, from a scanning portion configured to optically scan the patch row; and a parameter generating portion configured to generate a color tone correction parameter for correcting color tone value of photoconductive image data by comparing the scanned color tone data and the color tone image data.
... |
| |
| Photoconductive materials and devices with internal photoconductive gain | 20100309460 | 20101209 |
| The invention provides a new class of photoconductive materials and devices, and methods for obtaining high internal photoconductive gain. The devices include a semiconductor or material with an electronic band gap provided in a confined geometry and which exhibits multi-exciton generation (MEG) when illuminated with photons with energies above the threshold for MEG. Due to carrier-carrier Coulombic interactions, multi-excitons within the confined material efficiently recombine via Auger recombination, in which a carrier from one exciton is excited to a higher energy level relative to the band edge. Carriers excited by Auger recombination are subsequently trapped by trap states that capture carriers excited high above the band edge more efficiently than carriers near the band edge. Carriers trapped by the trap states allow for the collection and... |
| Organic photosensitive optoelectronic device with an exciton blocking layer | 20100307555 | 20101209 |
| An organic photosensitive optoelectronic device having a plurality of cells disposed between a first electrode and a second electrode. Each cell includes a photoconductive organic hole transport layer adjacent to a photoconductive organic electron transport layer. A metal or metal substitute is disposed between each of the cells. At least one exciton blocking layer is disposed between the first electrode and the second electrode.
... |
| Support structure for a photoconductive drum of a production printing system | 20100296838 | 20101125 |
| A drum support structure of a production printing system is disclosed. The drum support structure secures a photoconductive drum within a printing system during operation. The drum support structure includes a plurality of ring members spaced in parallel along a longitudinal axis. The ring members have an outside diameter that corresponds with an inside diameter of the drum so that the ring members fit within the drum. The drum support structure also includes a plurality of connecting members that affix the ring members to one another. The drum support structure also includes an inner end cap that connects to an inner-most ring member through one or more connecting members and is adapted to contact one end of the drum. The drum support structure also includes an... |
| Electrophotographic photoconductor, and electrophotographic method, electrophotographic apparatus and process cartridge containing the electrophotographic photoconductor | 20100290807 | 20101118 |
| where X and Y each represent an (un)substituted aromatic group.
... |
| apparatus for providing electrical contact between a power supply and a photoconductive drum in an image forming device | 20100290802 | 20101118 |
| In an image forming device an apparatus is provided that supplies a continuous flow of an electrical charge between a photoconductive drum and a power supply. In one embodiment, an electrically conductive member receives a shaft of the photoconductive drum. An electrically conductive cap disposed on a first side of the electrically conductive member, aligned with an aperture of the electrically conductive member, and capable of being electrically coupled with the shaft via the electrically conductive member. There is also an electrically conductive resilient member having a leading end and a trailing end electrically couple with the electrically conductive member and the shaft in a manner that the leading end is disposed on the first side of the electrically conductive member and the trailing end is... |
| X-rays source comprising at least one electron source combined with a photoelectric control device | 20100290593 | 20101118 |
| A radiation source includes a vacuum chamber, means for injecting an optical wave, a cold source for emitting electrons, a power supply, an anode for emitting X-rays, and at least one window through which the X-rays exit. A light source delivers the optical wave, and the cold source includes at least one substrate with a conducting surface and is subjected to an electric field. The cold further includes a photoconductive element in which the current is controlled approximately linearly by the illumination and at least one electron-emitting element, the photoconductive element electrically connected in series between an emitting element and a conducting surface. Current photogenerated in the photoconductive device is equal to that emitted by the emitter or the group of emitters with which it is... |
| Image forming apparatus, transfer unit thereof, and method of shifting transfer rollers thereof | 20100284712 | 20101111 |
| An image forming apparatus according to the present invention includes a first photoconductive member used during monochrome printing; a plurality of second photoconductive members used together with the first photoconductive member during full-color printing and arranged in parallel to the first photoconductive member; a transfer belt that forms a loop-like moving path; a first transfer roller and a plurality of second transfer rollers provided on an inner peripheral side of the transfer belt; and a link member that shifts, during the full-color printing, the second transfer rollers to positions where the second transfer rollers are brought into press contact with the respective second photoconductive members via the transfer belt and shifts, during the monochrome printing, the second transfer rollers to positions where respective separations between an... |
| Transmission-modulated photoconductive decay measurement system | 20100283496 | 20101111 |
| A system and method for measuring recombination lifetime of a photoconductor or semiconductor material in real time and without physically contacting the material involving positioning the sample material between a transmitter and a receiver so that electromagnetic signals, preferably radio frequency signals, traveling from the transmitter to the receiver pass through the sample material. The electromagnetic signals are modulated as they pass through the sample material depending on the carrier density and conductivity of the sample material. The modulated electromagnetic signals received by the receiver are then analyzed to determine the carrier recombination lifetime of the sample material.
... |
| Photoconductive switch package | 20100282949 | 20101111 |
| A photoconductive switch is formed of a substrate that has a central portion of SiC or other photoconductive material and an outer portion of cvd-diamond or other suitable material surrounding the central portion. Conducting electrodes are formed on opposed sides of the substrate, with the electrodes extending beyond the central portion and the edges of the electrodes lying over the outer portion. Thus any high electric fields produced at the edges of the electrodes lie outside of and do not affect the central portion, which is the active switching element. Light is transmitted through the outer portion to the central portion to actuate the switch.
... |
| Terahertz frequency domain spectrometer with integrated dual laser module | 20100277726 | 20101104 |
| An apparatus for analyzing, identifying or imaging an target including an integrated dual laser module coupled to a pair of photoconductive switches to produce cw signals in the range of frequencies from 100 GHz to over 2 THz focused on and transmitted through or reflected from the target; and a detector for acquiring spectral information from signals received from the target and using a multi-spectral homodyne process to generate an electrical signal representative of some characteristics of the target with resolution less than 250 MHz. The photoconductive switches are activated by laser beams from the dual laser module. The lasers in the module are tuned to different frequencies and have two distinct low frequency identification tones respectively that are used in conjunction with a stable optical... |
| Photoconductive device | 20100276594 | 20101104 |
| A photoconductive device (2) comprises a plurality of photoconductive layers (6, 8, 10, 12), each photoconductive layer comprising photoconductive material (4) and a respective plurality of electrodes (16, 18), wherein the photoconductive layers (6, 8, 10, 12) are electrically connected together.
... |
| Effective scheduling algorithm for belt space conservation | 20100272461 | 20101028 |
| This is a method for placing test patches along the surface of a photoconductive belt. A novel feature of this invention is locating optimum times and locations for placing the test patches by rotating the belt backwards after the first normal forward rotation of the belt.
... |
| Image forming apparatus and image forming method | 20100266303 | 20101021 |
| According to one embodiment, an image forming apparatus configured to form an image and record the image on a recording material includes a driving unit configured to drive plural color developing devices and a black developing device independent from one another, a toner quantity meter configured to measure toner residual quantities in the developing devices after development processing applied to photoconductive members, a toner supplying unit configured to execute operation for supplying the toners to the respective developing devices according to the measured toner residual quantities, and a controller configured to start, with reference to timing when the toner supply operation is completed last in the plural color developing devices, operation for stopping the plural color developing devices and start, with reference to timing when the... |
| Image forming apparatus and image quality maintenance method for image forming apparauts | 20100266296 | 20101021 |
| An image forming apparatus has a photoconductive drum which carries an electrostatic latent image, a developer supply unit which supplies a developer to the photoconductive drum, an image carrier which carries a developer image, and a density sensor which measures a density of a test print on the image carrier. The image forming apparatus carries out a second image quality maintenance operation for lowering a contrast potential when the density of the test print is higher than a predetermined value. When the test print is still dense even if the contrast potential reaches a lower limit value, the image forming apparatus carries out a first image quality maintenance operation for discharging the developer, then supplying a fresh developer to the developer supply unit, and causing the... |
| Electrophotographic photosensitive body and image forming device having an electrophotographic photosensitive body | 20100260517 | 20101014 |
| A negative charging electrophotographic photosensitive body has a base, a photoconductive layer made of an amorphous silicon compound and formed amorphous silicon compound and formed on the base, a charge injection blocking layer formed on the photoconductive layer, and a surface layer formed on the charge injection blocking layer. The charge injection blocking layer contains at least one element selected from a group of N, O, and C and a group-13 element. The optical absorption coefficient of the charge injection blocking layer is smaller than that of the photoconductive layer, and the difference between the refractive index of the photoconductive layer and that of the charge injection blocking layer is greater than 0 and less than 0.9.
... |
| Optical beam scanning device, image forming apparatus | 20100259808 | 20101014 |
| An optical beam scanning device includes a polygon mirror 80 in which tilt angles with respect to a rotation axis of the polygon mirror 80 of respective plural reflecting surfaces are set to angles corresponding to photoconductive members associated with the respective reflecting surfaces, a post-deflection optical system A1 that guides light beams reflected and deflected by the respective plural reflecting surfaces in the polygon mirror 80 to the photoconductive surfaces of the photoconductive members corresponding to the respective reflecting surfaces, and a pre-deflection optical system 7a that shapes the light from the light source to be a light beam of a predetermined sectional shape and guides the light beam to the polygon mirror 80, the pre-deflection optical system 7a guiding the light from the light... |
| Optically induced cell lysis biochip | 20100255555 | 20101007 |
| The present invention provides an optically induced cell lysis biochip, which comprises: an upper substrate made of a transparent, electrically conductive material; a lower substrate made of a transparent, electrically conductive material; a photoconductive layer formed under the lower surface of the upper substrate or on the upper surface of the lower substrate; and a chamber formed between the upper substrate and the lower substrate. When there is an electric potential difference between the upper and lower substrates, a light spot illuminated on the photoconductive layer can cause the impedance of the illuminated area to decrease, thereby causing the electric current to center on the illuminated area of the photoconductive layer. Further, the electric current flowing through the illuminated area can induce the cell lysis process... |
| Charging device, image forming apparatus, and method of maintaining gap between charging roller and photoconductive drum | 20110013938 | 20110120 |
| According to one embodiment, a charging device includes a charging roller and gap maintaining members. The charging roller includes a conductive roller to which charging voltage is applied and a coating layer as a member for covering the outer circumferential surface of the conductive roller, ends of the coating layer being further extended by predetermined length along an extending direction of the conductive roller than end faces of the conductive roller. The charging roller charges, in a non-contact manner, a photoconductive drum arranged near the charging roller with the charging voltage applied via the conductive roller. The gap maintaining members are respectively fixed at both ends of the charging roller in positions spaced apart from the ends of the charging roller. The gap maintaining members are... |
| Developing device and image forming apparatus including the same | 20110013929 | 20110120 |
| A developing device includes a housing containing toner having an opening at a side thereof, a developing roller supplying the toner supplied through the opening to a photoconductive drum, and a regulator contacting the outer circumference of the developing roller to regulate the amount of the toner supplied to the photoconductive drum. The housing also includes a lower frame having both side portions and a lower end portion respectively forming both edges and a lower edge of the opening in a lengthwise direction, and an upper frame welded and coupled to the lower frame and including a leading end portion forming an upper edge of the opening and a recess portion recessed from the leading end portion at both end portions of the leading end portion... |
| Developing device and electrophotographic image forming apparatus including the developing device | 20110013925 | 20110120 |
| A developing device detachably coupled to an electrophotographic image forming apparatus which includes a housing including a photoconductive drum and at least one roller; and an electrical contact member disposed in the housing, connected to the at least one roller, and formed of a conductive metallic plate to provide an electrical path between the at least one roller and a power supply when the developing device is attached to the electrophotographic image forming apparatus, wherein the electrical contact member includes a base including a coupling unit to engage with the housing, a first elastic member to bend from the base in a first direction; a second elastic member to bend from the first elastic member in a second direction and including a contact to contact the... |
| Developing device and image forming apparatus employing the same | 20110002708 | 20110106 |
| A developing device has a housing including a toner container containing toner, and a developing unit. The developing unit includes a developing roller and a photoconductive drum, and a barrier member including a toner supply window. The barrier member is combined with the housing to separate the toner container and the developing unit from each other. The developing unit also includes a blocking film that is attached to the barrier member to block the toner supply window. An end of the blocking film is exposed outside the housing through an opening formed in a sidewall of the housing. A bottom surface and first and second side surfaces of the barrier member are attached to a bottom surface and first and second side surfaces of the housing... |
| Optical beam scanning apparatus, image forming apparatus | 20100328731 | 20101230 |
| In an optical beam scanning apparatus and an image forming apparatus equipped with the optical beam scanning apparatus of the present invention, plural optical members that irradiate scanning lines by laser beams (beams) emitted from plural light sources individually onto corresponding photoconductive drums are disposed within an optical unit housing and a housing cover, a fixing mechanism configured to fix part of a parallel plate provided within the optical unit housing and the housing cover is provided, and a twist angle adjusting mechanism configured to adjust an angle of twist of the parallel plate by rotating, in a specific direction, the parallel plate having the part thereof being fixed with the fixing mechanism is provided. According to the optical beam scanning apparatus and the image forming... |
| Apparatus for applying an acoustic dampening coating to the interior of a xerographic drum | 20100326352 | 20101230 |
| This is a photoconductor and dispenser assembly and system. The photoconductor is in a tubular form so as to accept a tubular formed dispenser within its hollow portion. The dispenser will coat within this hollow portion a uniform coating of an acoustical dampening material. This material will dull any sound produced by the photoconductive marking system. The assembly is the tube having in its hollow portion this dispenser. The dispenser fits tightly but movably within the hollow portion.
... |
| Image forming apparatus, method of handling the image forming apparatus, and method of packaging the image forming apparatus | 20100316409 | 20101216 |
| Disclosed are an electrophotographic image forming apparatus including a detachable development cartridge having arranged therein a photoconductive drum and a developing roller for forming a toner image through a development nip formed between the photoconductive drum and the developing roller. The development cartridge may include a development nip control member that can switch between a first position, in which the development nip control member causes the photoconductive drum to be separated from the developing roller, and a second position, in which the development nip control member causes the photoconductive drum to be in a pressing contact with the developing roller so as to form therebetween the development nip. The development cartridge may be mounted in the main body of the electrophotographic image forming apparatus with its... |
| Writing device and image display apparatus | 20100315385 | 20101216 |
| A writing device includes: a voltage application unit that applies a voltage to a display medium including a first display layer, second display layer and a photoconductive layer; a first obtaining unit that obtains image data showing an original image; a controller that controls the voltage application unit and the irradiating unit to cause the display medium to show an overlapped image including the obtained original image and an overwritten image overwritten on the original image, the overwritten image including a point corresponding to the location shown by the location information stored in the storage unit.
... |
| Terahertz frequency domain spectrometer with frequency shifting of source laser beam | 20100314545 | 20101216 |
| An apparatus for analyzing, identifying or imaging an target including first and second laser beams coupled to a pair of photoconductive switches to produce CW signals in one or more bands in a range of frequencies greater than 100 GHz focused on and transmitted through or reflected from the target; and a detector for acquiring spectral information from signals received from the target and using a multi-spectral heterodyne process to generate an electrical signal representative of some characteristics of the target. The lasers are tuned to different frequencies and a frequency shifter in the path of one laser beam allows the terahertz beam to be finely adjusted in one or more selected frequency bands.
... |
| Photoconductive device, and terahertz wave generation and detection apparatuses each using the photoconductive device | 20100310976 | 20101209 |
| A photoconductive device includes: a photoconductive layer configured to generate carriers upon irradiation with excitation light, a first electrode arranged on the photoconductive layer, a second electrode arranged on the photoconductive layer with a gap between the first and second electrodes, and a third electrode arranged in a region over which an electric field caused by voltages applied to the first and second electrodes or an electric field caused by irradiation with a terahertz wave extends. A depletion layer of the photoconductive layer is controllable by a voltage applied to the third electrode.
... |
| Image forming apparatus | 20100310274 | 20101209 |
| An image forming apparatus includes: a photoconductive member; a light irradiation unit located below the photoconductive member and configured to irradiate light on the surface of the photoconductive member and form an electrostatic latent image; a developing unit configured to supply a developer to the photoconductive member and form a developer image corresponding to the electrostatic latent image on the surface of the photoconductive member; a transfer belt configured to move between a first position where the transfer belt comes into contact with the photoconductive member and a second position where the transfer belt separates from the photoconductive member and transfer the developer image on the photoconductive member onto a sheet; a driving mechanism including a rotating lever and configured to drive the transfer belt between... |
| Image processing apparatus, image processing method, and computer- readable recording medium storing image processing program for generating color tone correction parameter | 20100309498 | 20101209 |
| An image processing apparatus is disclosed that includes a printing procedure request portion configured to request printing of color tone image data in a state where a patch row is arranged in a direction almost parallel with a main scanning direction; an image data obtaining portion configured to obtain scanned color tone data, showing scanned value of the patch row, from a scanning portion configured to optically scan the patch row; and a parameter generating portion configured to generate a color tone correction parameter for correcting color tone value of photoconductive image data by comparing the scanned color tone data and the color tone image data.
... |
| Photoconductive materials and devices with internal photoconductive gain | 20100309460 | 20101209 |
| The invention provides a new class of photoconductive materials and devices, and methods for obtaining high internal photoconductive gain. The devices include a semiconductor or material with an electronic band gap provided in a confined geometry and which exhibits multi-exciton generation (MEG) when illuminated with photons with energies above the threshold for MEG. Due to carrier-carrier Coulombic interactions, multi-excitons within the confined material efficiently recombine via Auger recombination, in which a carrier from one exciton is excited to a higher energy level relative to the band edge. Carriers excited by Auger recombination are subsequently trapped by trap states that capture carriers excited high above the band edge more efficiently than carriers near the band edge. Carriers trapped by the trap states allow for the collection and... |
| Organic photosensitive optoelectronic device with an exciton blocking layer | 20100307555 | 20101209 |
| An organic photosensitive optoelectronic device having a plurality of cells disposed between a first electrode and a second electrode. Each cell includes a photoconductive organic hole transport layer adjacent to a photoconductive organic electron transport layer. A metal or metal substitute is disposed between each of the cells. At least one exciton blocking layer is disposed between the first electrode and the second electrode.
... |
| Support structure for a photoconductive drum of a production printing system | 20100296838 | 20101125 |
| A drum support structure of a production printing system is disclosed. The drum support structure secures a photoconductive drum within a printing system during operation. The drum support structure includes a plurality of ring members spaced in parallel along a longitudinal axis. The ring members have an outside diameter that corresponds with an inside diameter of the drum so that the ring members fit within the drum. The drum support structure also includes a plurality of connecting members that affix the ring members to one another. The drum support structure also includes an inner end cap that connects to an inner-most ring member through one or more connecting members and is adapted to contact one end of the drum. The drum support structure also includes an... |
| Electrophotographic photoconductor, and electrophotographic method, electrophotographic apparatus and process cartridge containing the electrophotographic photoconductor | 20100290807 | 20101118 |
| where X and Y each represent an (un)substituted aromatic group.
... |
| apparatus for providing electrical contact between a power supply and a photoconductive drum in an image forming device | 20100290802 | 20101118 |
| In an image forming device an apparatus is provided that supplies a continuous flow of an electrical charge between a photoconductive drum and a power supply. In one embodiment, an electrically conductive member receives a shaft of the photoconductive drum. An electrically conductive cap disposed on a first side of the electrically conductive member, aligned with an aperture of the electrically conductive member, and capable of being electrically coupled with the shaft via the electrically conductive member. There is also an electrically conductive resilient member having a leading end and a trailing end electrically couple with the electrically conductive member and the shaft in a manner that the leading end is disposed on the first side of the electrically conductive member and the trailing end is... |
| X-rays source comprising at least one electron source combined with a photoelectric control device | 20100290593 | 20101118 |
| A radiation source includes a vacuum chamber, means for injecting an optical wave, a cold source for emitting electrons, a power supply, an anode for emitting X-rays, and at least one window through which the X-rays exit. A light source delivers the optical wave, and the cold source includes at least one substrate with a conducting surface and is subjected to an electric field. The cold further includes a photoconductive element in which the current is controlled approximately linearly by the illumination and at least one electron-emitting element, the photoconductive element electrically connected in series between an emitting element and a conducting surface. Current photogenerated in the photoconductive device is equal to that emitted by the emitter or the group of emitters with which it is... |
| Image forming apparatus, transfer unit thereof, and method of shifting transfer rollers thereof | 20100284712 | 20101111 |
| An image forming apparatus according to the present invention includes a first photoconductive member used during monochrome printing; a plurality of second photoconductive members used together with the first photoconductive member during full-color printing and arranged in parallel to the first photoconductive member; a transfer belt that forms a loop-like moving path; a first transfer roller and a plurality of second transfer rollers provided on an inner peripheral side of the transfer belt; and a link member that shifts, during the full-color printing, the second transfer rollers to positions where the second transfer rollers are brought into press contact with the respective second photoconductive members via the transfer belt and shifts, during the monochrome printing, the second transfer rollers to positions where respective separations between an... |
| Transmission-modulated photoconductive decay measurement system | 20100283496 | 20101111 |
| A system and method for measuring recombination lifetime of a photoconductor or semiconductor material in real time and without physically contacting the material involving positioning the sample material between a transmitter and a receiver so that electromagnetic signals, preferably radio frequency signals, traveling from the transmitter to the receiver pass through the sample material. The electromagnetic signals are modulated as they pass through the sample material depending on the carrier density and conductivity of the sample material. The modulated electromagnetic signals received by the receiver are then analyzed to determine the carrier recombination lifetime of the sample material.
... |
| Photoconductive switch package | 20100282949 | 20101111 |
| A photoconductive switch is formed of a substrate that has a central portion of SiC or other photoconductive material and an outer portion of cvd-diamond or other suitable material surrounding the central portion. Conducting electrodes are formed on opposed sides of the substrate, with the electrodes extending beyond the central portion and the edges of the electrodes lying over the outer portion. Thus any high electric fields produced at the edges of the electrodes lie outside of and do not affect the central portion, which is the active switching element. Light is transmitted through the outer portion to the central portion to actuate the switch.
... |
| Terahertz frequency domain spectrometer with integrated dual laser module | 20100277726 | 20101104 |
| An apparatus for analyzing, identifying or imaging an target including an integrated dual laser module coupled to a pair of photoconductive switches to produce cw signals in the range of frequencies from 100 GHz to over 2 THz focused on and transmitted through or reflected from the target; and a detector for acquiring spectral information from signals received from the target and using a multi-spectral homodyne process to generate an electrical signal representative of some characteristics of the target with resolution less than 250 MHz. The photoconductive switches are activated by laser beams from the dual laser module. The lasers in the module are tuned to different frequencies and have two distinct low frequency identification tones respectively that are used in conjunction with a stable optical... |
| Photoconductive device | 20100276594 | 20101104 |
| A photoconductive device (2) comprises a plurality of photoconductive layers (6, 8, 10, 12), each photoconductive layer comprising photoconductive material (4) and a respective plurality of electrodes (16, 18), wherein the photoconductive layers (6, 8, 10, 12) are electrically connected together.
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| Effective scheduling algorithm for belt space conservation | 20100272461 | 20101028 |
| This is a method for placing test patches along the surface of a photoconductive belt. A novel feature of this invention is locating optimum times and locations for placing the test patches by rotating the belt backwards after the first normal forward rotation of the belt.
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| Image forming apparatus and image forming method | 20100266303 | 20101021 |
| According to one embodiment, an image forming apparatus configured to form an image and record the image on a recording material includes a driving unit configured to drive plural color developing devices and a black developing device independent from one another, a toner quantity meter configured to measure toner residual quantities in the developing devices after development processing applied to photoconductive members, a toner supplying unit configured to execute operation for supplying the toners to the respective developing devices according to the measured toner residual quantities, and a controller configured to start, with reference to timing when the toner supply operation is completed last in the plural color developing devices, operation for stopping the plural color developing devices and start, with reference to timing when the... |
| Image forming apparatus and image quality maintenance method for image forming apparauts | 20100266296 | 20101021 |
| An image forming apparatus has a photoconductive drum which carries an electrostatic latent image, a developer supply unit which supplies a developer to the photoconductive drum, an image carrier which carries a developer image, and a density sensor which measures a density of a test print on the image carrier. The image forming apparatus carries out a second image quality maintenance operation for lowering a contrast potential when the density of the test print is higher than a predetermined value. When the test print is still dense even if the contrast potential reaches a lower limit value, the image forming apparatus carries out a first image quality maintenance operation for discharging the developer, then supplying a fresh developer to the developer supply unit, and causing the... |
| Electrophotographic photosensitive body and image forming device having an electrophotographic photosensitive body | 20100260517 | 20101014 |
| A negative charging electrophotographic photosensitive body has a base, a photoconductive layer made of an amorphous silicon compound and formed amorphous silicon compound and formed on the base, a charge injection blocking layer formed on the photoconductive layer, and a surface layer formed on the charge injection blocking layer. The charge injection blocking layer contains at least one element selected from a group of N, O, and C and a group-13 element. The optical absorption coefficient of the charge injection blocking layer is smaller than that of the photoconductive layer, and the difference between the refractive index of the photoconductive layer and that of the charge injection blocking layer is greater than 0 and less than 0.9.
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| Optical beam scanning device, image forming apparatus | 20100259808 | 20101014 |
| An optical beam scanning device includes a polygon mirror 80 in which tilt angles with respect to a rotation axis of the polygon mirror 80 of respective plural reflecting surfaces are set to angles corresponding to photoconductive members associated with the respective reflecting surfaces, a post-deflection optical system A1 that guides light beams reflected and deflected by the respective plural reflecting surfaces in the polygon mirror 80 to the photoconductive surfaces of the photoconductive members corresponding to the respective reflecting surfaces, and a pre-deflection optical system 7a that shapes the light from the light source to be a light beam of a predetermined sectional shape and guides the light beam to the polygon mirror 80, the pre-deflection optical system 7a guiding the light from the light... |
| Optically induced cell lysis biochip | 20100255555 | 20101007 |
| The present invention provides an optically induced cell lysis biochip, which comprises: an upper substrate made of a transparent, electrically conductive material; a lower substrate made of a transparent, electrically conductive material; a photoconductive layer formed under the lower surface of the upper substrate or on the upper surface of the lower substrate; and a chamber formed between the upper substrate and the lower substrate. When there is an electric potential difference between the upper and lower substrates, a light spot illuminated on the photoconductive layer can cause the impedance of the illuminated area to decrease, thereby causing the electric current to center on the illuminated area of the photoconductive layer. Further, the electric current flowing through the illuminated area can induce the cell lysis process... |
| Image forming apparatus | 20100247120 | 20100930 |
| An image forming apparatus includes an image forming device, a time detection unit, a humidity measurement unit and a controller. The image forming device includes a photoconductive body, a developing device and a transfer device. The time detection unit detects information concerning a stop time period of the developing device. The humidity measurement unit is provided in a casing in which the image forming device is provided and measures a humidity. The controller controls a developer supply member in the developing device based on the information concerning the stop time period detected by the time detection unit and information concerning the humidity measured by the humidity measurement unit, so as to rotate at a lower speed than a rotation speed at a normal time before the... |
| Methods and apparatus for providing a liquid coating for an organic photoconductive drum | 20090324809 | 20091231 |
| A method of cleaning and coating a used organic photoconductive drum is disclosed. Using this method remanufacturers can reliably reuse certain used organic photoconductive drums which could not be reused without this method. The method comprises providing a used organic photoconductive drum, cleaning the surface of the used organic photoconductive drum, applying a new surface layer comprising a non-volatile non-polar dielectric fluid such as a silicone oil with a viscosity of less than 200 cSt at 40 degrees Celsius. The resulting liquid surface on the used organic photoconductive drum provides wear resistance, and improved electrical characteristics allowing the used organic photoconductive drum to be used at least a second time.
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| Charging apparatus, print engine that incorporates the charging apparatus, and image forming apparatus that incorporates the print engine | 20090324290 | 20091231 |
| A charging apparatus includes a charging member and at least one projection formed on the charging member. The charging member includes a surface that faces the surface of a photoconductive body. The at least one projection is formed on the first surface to extend in a direction parallel to the longitudinal direction of the photoconductive body. The projection is in contact with the surface of the photoconductive body.
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| Optical beam scanning apparatus and image forming apparatus | 20090323148 | 20091231 |
| In an image forming apparatus provided with an optical beam scanning apparatus according to the invention, an optical beam scanning apparatus of an overillumination scanning optical system includes a semiconductor laser device as a light source, a pre-deflection optical system, a polygon mirror, and a post-deflection optical system, with a width of the luminous flux made incident on the polygon mirror being wider than a width of one reflecting surface forming the polygon mirror, wherein at least two sheets of flat plate for transmitting the luminous flux scanned by the polygon mirror are provided in the post-deflection optical system. In accordance with an image forming apparatus provided with an optical beam scanning apparatus according to the invention, not only a wave front aberration on a photoconductive... |
| Image forming apparatus | 20090317146 | 20091224 |
| An image forming apparatus includes a plurality of image forming units arranged to form toner images of different colors on surfaces of photoconductive drums, an intermediate transfer unit that has an intermediate transfer belt arranged in the vicinity of the photoconductive drums and a plurality of intermediate transfer rollers opposed to the respective photoconductive drums through the intermediate transfer belt, and that transfers the toner images formed on the photoconductive drums to the intermediate transfer belt, and a transfer unit arranged to transfer, to a piece of paper, the toner images of different colors transferred to the intermediate transfer belt. The intermediate transfer unit includes a position setting mechanism arranged to move the intermediate transfer rollers individually to an operation position in which the roller makes... |
| Image forming apparatus | 20090317108 | 20091224 |
| Bias correction control of an intermediate transfer belt 21 on which an image of each color formed on a surface of a photoconductive body 31 is transferred, and a second transfer belt 24 in pressure contact with the intermediate transfer belt 21 to transfer a toner image onto a recording sheet by passing the recording sheet between the intermediate transfer belt 21. Contents of the bias correction control (an amount of correction control and a cycle of correction control) can be changed in accordance with states of the belts i.e. whether the intermediate transfer belt 21 and the second transfer belt 24 are in a pressure contact state or a separate state.
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| Electrophotographic photoconductor | 20090311616 | 20091217 |
| An electrophotographic photoconductor including an electroconductive support and a photoconductive layer provided thereon, wherein the photoconductive layer includes a charge generating material, an electron transporting material and a hole transporting material, the electron transporting material being a diphenoquinone compound represented by formula (1) described herein, the hole transporting material being a compound represented by formula (2) described herein.
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| Stacked-layered thin film solar cell and manufacturing method thereof | 20090308448 | 20091217 |
| Disclosed are a stacked-layered thin film solar cell and a manufacturing method thereof. The stacked-layered thin film solar cell includes plural unit cells connected together electrically, each including a substrate, a first electrode layer, a first photoconductive layer, an interlayer, a second photoconductive layer and a second electrode layer, wherein the first electrode layer is divided by plural first grooves; plural second grooves are formed through the second photoconductive layer, the interlayer, and the first photoconductive layer; and plural third grooves are formed in the second electrode layer and extended downward through the first photoconductive layer. The first, second and third grooves are offset with respect to one another. The stacked-layered thin film solar cell is characterized by plural recesses formed at intersections between the interlayer... |
| Optically reconfigurable multi-element device | 20090303128 | 20091210 |
| The invention relates to an optically reconfigurable multi-element device. An optical matrix formed by a set of optical elements, such as elements of OLED type, makes it possible to actuate a matrix of photoconductive elements, which will allow connection to be made between the various elements of the device to be reconfigured.
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| Optically reconfigurable logic circuit | 20090296178 | 20091203 |
| In an optically reconfigurable logic circuit 1 provided with a plurality of configuration information input circuits 6 for converting an optical signal including logic circuit configuration information into an electric signal and holding and outputting this electric signal and a logic configuration variable circuit 7 for performing logic configuration on the basis of the logic circuit configuration information, the configuration information input circuits 6 holds the logic circuit configuration information as electric charge with use of a junction capacitance and a floating capacitance of a photoconductive device P. An inter-terminal voltage of the photoconductive device P is converted into binary data by a binary circuit and output as a circuit configuration signal. Then, the logic configuration variable circuit 7 is configured to execute a logic arithmetic... |
| Radiation detector | 20090294705 | 20091203 |
| A radiation detector is constituted by: a recording photoconductive layer; and electrodes provided on both sides of the photoconductive layer. Electric charges, which are generated within the recording photoconductive layer when radiation is irradiated thereon while a predetermined biasing voltage is being applied between the electrodes, are read out as electric signals. The recording photoconductive layer is formed by amorphous selenium that contains alkali metal elements within a range from 0.0007 atomic ppm to 0.0035 atomic ppm.
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| Development device | 20090290901 | 20091126 |
| A development device includes an open-ended housing, a rotatable roller, an array of multiple primary electrodes, a voltage source, a sealing member, and a secondary electrode. The housing accommodates toner for application to the photoconductive surface through an end opening thereof. The roller has an outer circumferential surface to deliver the toner from within the housing to a development zone. The array of multiple primary electrodes are aligned with each other on the roller surface. The voltage source applies a periodic pulse voltage to at least a subset of the primary electrodes to generate an oscillating primary electric field. The sealing member seals clearance between the roller surface and an edge of the end opening downstream from the development zone. The secondary electrode generates a secondary... |
| Image forming apparatus | 20090285600 | 20091119 |
| An image forming apparatus in which a drum unit or a developing unit can be individually replaced, and the efficiency of an operation of providing the developing unit with developer or of an operation of removing the developer from the developing unit can be improved includes a supplying roller including a magnetic roller and a developing sleeve arranged on an outer circumference of the magnetic roller. A fixing member is attached to an axial portion of the magnetic roller. The supplying roller can be removably attached to a side of a photoconductive drum by the fixing member, and at the same time, a pole position of the magnetic roller relative to the photoconductive drum can be fixed.
... |
| Terahertz frequency domain spectrometer with controllable phase shift | 20090283680 | 20091119 |
| An apparatus for analyzing, identifying or imaging an target including an integrated dual laser module coupled to a pair of photoconductive switches to produce cw signals in the range of frequencies from 100 GHz to over 2 THz focused on and transmitted through or reflected from the target; and a detector for acquiring spectral information from signals received from the target and using a multi-spectral homodyne process to generate an electrical signal representative of some characteristics of the target with resolution less than 250 MHz. The photoconductive switches are activated by laser beams from the dual laser module. The lasers in the module are tuned to different frequencies and a phase shifter in the path of one beam allows the beams to have an adjustable phase... |
| Xerographic imaging modules, xerographic apparatuses, and methods of making xerographic imaging modules | 20090274490 | 20091105 |
| Xerographic imaging modules, xerographic apparatuses including the xerographic imaging modules and methods of making the xerographic imaging modules are disclosed. An embodiment of the xerographic imaging modules includes a photoreceptor roll having a photoconductive surface, a donor roll adjacent the photoreceptor roll for supplying toner to the photoconductive surface, and a toner loading roll adjacent the donor roll for supplying the toner to the donor roll. The toner loading roll includes a core comprised of a foam first material, and a non-porous surface region comprised of the first material. The surface region surrounds the core and forms an outer surface of the toner loading roll.
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| Image forming device | 20090274488 | 20091105 |
| An image forming device includes a photoconductive body, an exposure unit configured with a plurality of light emitting elements aligned in a predetermined direction, the exposure unit being adopted to expose the photoconductive body to light emitted by the light emitting elements, a frame configured to support both sides of the exposure unit in the predetermined direction, the frame having a reference portion configured to position the exposure unit in the predetermined direction in contact with an end of the exposure unit in the predetermined direction, and a pressing member provided to one of the frame and the exposure unit, the pressing member being configured to press the end of the exposure unit against the reference portion.
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| Stacked-layered thin film solar cell and manufacturing method thereof | 20090272429 | 20091105 |
| A stacked-layered thin film solar cell has a plurality of independent unit cells comprising a substrate, a first electrode layer, a first photoconductive layer, an interlayer, a second photoconductive layer, and a second electrode layer in a series stacked structure, wherein at least one first separation groove is formed within the first electrode layer and the stacked-layered thin film solar cell is characterized in: at least one second separation groove formed on the interlayer, at least one connection groove passing through the first photoconductive layer and the second photoconductive layer, and at least one third separation groove extending downward at a periphery of each of the unit cells so that the connection grooves and the third separation groove are concurrently located inside a projection zone of... |
| Xerographic imaging modules, xerographic apparatuses, and methods of making xerographic imaging modules | 20090274490 | 20091105 |
| Xerographic imaging modules, xerographic apparatuses including the xerographic imaging modules and methods of making the xerographic imaging modules are disclosed. An embodiment of the xerographic imaging modules includes a photoreceptor roll having a photoconductive surface, a donor roll adjacent the photoreceptor roll for supplying toner to the photoconductive surface, and a toner loading roll adjacent the donor roll for supplying the toner to the donor roll. The toner loading roll includes a core comprised of a foam first material, and a non-porous surface region comprised of the first material. The surface region surrounds the core and forms an outer surface of the toner loading roll.
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| Image forming device | 20090274488 | 20091105 |
| An image forming device includes a photoconductive body, an exposure unit configured with a plurality of light emitting elements aligned in a predetermined direction, the exposure unit being adopted to expose the photoconductive body to light emitted by the light emitting elements, a frame configured to support both sides of the exposure unit in the predetermined direction, the frame having a reference portion configured to position the exposure unit in the predetermined direction in contact with an end of the exposure unit in the predetermined direction, and a pressing member provided to one of the frame and the exposure unit, the pressing member being configured to press the end of the exposure unit against the reference portion.
... |
| Stacked-layered thin film solar cell and manufacturing method thereof | 20090272429 | 20091105 |
| A stacked-layered thin film solar cell has a plurality of independent unit cells comprising a substrate, a first electrode layer, a first photoconductive layer, an interlayer, a second photoconductive layer, and a second electrode layer in a series stacked structure, wherein at least one first separation groove is formed within the first electrode layer and the stacked-layered thin film solar cell is characterized in: at least one second separation groove formed on the interlayer, at least one connection groove passing through the first photoconductive layer and the second photoconductive layer, and at least one third separation groove extending downward at a periphery of each of the unit cells so that the connection grooves and the third separation groove are concurrently located inside a projection zone of... |
| Toner brush with superimposed brushes for an electro-photographic printer and printer with the toner brush | 20090269110 | 20091029 |
| A toner brush for a printer and a printer including the toner brush. The toner brush includes a substrate (e.g. a core cylinder) with a cleaning brush and a residual toner brush superimposed over one another. During printing the printer holds the residual toner brush against a photoconductor or photoconductive surface, e.g., a photoconductive drum. For deep cleaning, the printer moves the cleaning brush closer to the photoconductor surface and holds it against the surface during deep cleaning. Deep cleaning may be automatically or manually (e.g., by an operator) initiated.
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| Image forming apparatus having a cleaning member configured to clean a transparent member of an optical device | 20090269102 | 20091029 |
| An image forming apparatus including a laser scanner configured to irradiate a photoconductive drum with light and having a cover glass transmitting the light, a laser shutter movable between a closed position, where the laser shutter blocks an optical path of the light emitted from the laser scanner through the cover glass toward the photoconductive drum, and an open position, where the laser shutter opens the optical path, and a cleaning member with which the cover glass is cleaned, the cleaning member being supported by the laser shutter in such a manner as to be movable along the laser shutter.
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| Image forming apparatus | 20090269092 | 20091029 |
| An image forming apparatus including an image carrier that includes a photoconductive layer on which an electrostatic latent image is formed, a charging member that comes in contact with the image carrier and charges the photoconductive layer, and a feeding section that supplies a current to the charging member by applying a vibration voltage with an alternate current component superposed on a direct current component, wherein the alternate current component may contain a first amplitude that eliminates charging non-uniformity when the vibration voltage is applied with a uniform amplitude and a second amplitude that is smaller than the first amplitude.
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| Image forming apparatus | 20090269092 | 20091029 |
| An image forming apparatus including an image carrier that includes a photoconductive layer on which an electrostatic latent image is formed, a charging member that comes in contact with the image carrier and charges the photoconductive layer, and a feeding section that supplies a current to the charging member by applying a vibration voltage with an alternate current component superposed on a direct current component, wherein the alternate current component may contain a first amplitude that eliminates charging non-uniformity when the vibration voltage is applied with a uniform amplitude and a second amplitude that is smaller than the first amplitude.
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| Image forming apparatus having a cleaning member configured to clean a transparent member of an optical device | 20090269102 | 20091029 |
| An image forming apparatus including a laser scanner configured to irradiate a photoconductive drum with light and having a cover glass transmitting the light, a laser shutter movable between a closed position, where the laser shutter blocks an optical path of the light emitted from the laser scanner through the cover glass toward the photoconductive drum, and an open position, where the laser shutter opens the optical path, and a cleaning member with which the cover glass is cleaned, the cleaning member being supported by the laser shutter in such a manner as to be movable along the laser shutter.
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| Toner brush with superimposed brushes for an electro-photographic printer and printer with the toner brush | 20090269110 | 20091029 |
| A toner brush for a printer and a printer including the toner brush. The toner brush includes a substrate (e.g. a core cylinder) with a cleaning brush and a residual toner brush superimposed over one another. During printing the printer holds the residual toner brush against a photoconductor or photoconductive surface, e.g., a photoconductive drum. For deep cleaning, the printer moves the cleaning brush closer to the photoconductor surface and holds it against the surface during deep cleaning. Deep cleaning may be automatically or manually (e.g., by an operator) initiated.
... |
| System and method of modulating electrical signals using photoconductive wide bandgap semiconductors as variable resistors | 20090261258 | 20091022 |
| A system and method for producing modulated electrical signals. The system uses a variable resistor having a photoconductive wide bandgap semiconductor material construction whose conduction response to changes in amplitude of incident radiation is substantially linear throughout a non-saturation region to enable operation in non-avalanche mode. The system also includes a modulated radiation source, such as a modulated laser, for producing amplitude-modulated radiation with which to direct upon the variable resistor and modulate its conduction response. A voltage source and an output port, are both operably connected to the variable resistor so that an electrical signal may be produced at the output port by way of the variable resistor, either generated by activation of the variable resistor or propagating through the variable resistor. In this manner,... |
| Printing apparatus | 20090252536 | 20091008 |
| The present invention relates to a printing apparatus. The printing apparatus includes a plurality of rollers, a micro light source set, an optical photoconductive drum, an imaging lens assembly, and a print unit. The micro light source set includes multiple micro light sources arranged in a row for producing multiple respective light beams. The imaging lens assembly is disposed between the micro light source set and the optical photoconductive drum for allowing the multiple light beams to pass through so as to image on the optical photoconductive drum.
... |
| Developer units, electrophotographic apparatuses and methods of supplying developer material to photoconductive members | 20090252538 | 20091008 |
| Developer units, electrophotograhic apparatuses, and methods of supplying developer material to photoconductive members in electrophotographic apparatuses are disclosed. An embodiment of the developer units for supplying a developer material to a photoconductive member, comprises a magnetic roll having an outer surface; a first auger adjacent the magnetic roll, the first auger being rotatable to convey the developer material to the outer surface of the magnetic roll; a second auger disposed below the first auger; a first trim blade disposed at a first angular position about the outer surface of the magnetic roll, the first trim blade adapter for leveling the developer material on the outer surface during rotation of the magnetic roll; and a second trim blade disposed at a second angular position about the outer... |
| Printing apparatus | 20090252536 | 20091008 |
| The present invention relates to a printing apparatus. The printing apparatus includes a plurality of rollers, a micro light source set, an optical photoconductive drum, an imaging lens assembly, and a print unit. The micro light source set includes multiple micro light sources arranged in a row for producing multiple respective light beams. The imaging lens assembly is disposed between the micro light source set and the optical photoconductive drum for allowing the multiple light beams to pass through so as to image on the optical photoconductive drum.
... |
| Developer units, electrophotographic apparatuses and methods of supplying developer material to photoconductive members | 20090252538 | 20091008 |
| Developer units, electrophotograhic apparatuses, and methods of supplying developer material to photoconductive members in electrophotographic apparatuses are disclosed. An embodiment of the developer units for supplying a developer material to a photoconductive member, comprises a magnetic roll having an outer surface; a first auger adjacent the magnetic roll, the first auger being rotatable to convey the developer material to the outer surface of the magnetic roll; a second auger disposed below the first auger; a first trim blade disposed at a first angular position about the outer surface of the magnetic roll, the first trim blade adapter for leveling the developer material on the outer surface during rotation of the magnetic roll; and a second trim blade disposed at a second angular position about the outer... |
| Photoconductive element for generation and detection of terahertz wave | 20080315098 | 20081225 |
| A photoconductive element for generating or detecting a terahertz wave comprises a carrier generation layer for generating carriers on light irradiation, a pair of conductive electrodes provided in opposition on one face of the carrier generation layer, each containing a strip line, a pair of conductive antennas placed in opposition with a gap for light irradiation onto the carrier generation layer, each being joined to the electrodes, a pair of conductive adjusting stubs for adjusting a propagation state of the terahertz wave generated or detected by the carriers, wherein each of the adjusting stubs has a length of not longer than the wavelength λ of the terahertz wave generated by the carriers, and is placed at a distance of not more than the wavelength λ from... |
| Ultracapacitors comprised of mineral microtubules | 20080316677 | 20081225 |
| Disclosed is an ultracapacitor having electrodes containing mineral microtubules, an electrolyte between the electrodes, and a separator in the electrolyte to provide electrical insulation between the electrodes, while allowing ion flow within the electrolyte. The electrodes may be formed from a paste containing microtubules, a conductive polymer containing mineral microtubules, or an aerogel containing the mineral microtubules. The mineral microtubules may be filled with carbon, a pseudocapacitance material, or a magnetoresistive material. The mineral microtubules may also be coated with a photoconductive material.
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| Image forming apparatus | 20080317482 | 20081225 |
| A supplying roller supplies toner to a developing roller which develops the electrostatic latent image formed on a photoconductive drum. The controller controls the supply to output first and second voltages to the developing roller and supplying roller. A detector generates a signal indicative of remaining toner. The voltage controller performs voltage correction according to the signal either in a first mode where the first voltage has a smaller value when the signal has become below a reference than when the signal is above the reference, or in a second mode where the first voltage has a smaller value when the signal has become below the reference than when the signal is above the reference, and a difference between the first and second voltages has a... |
| Image processing system and image forming apparatus incorporating same | 20080309951 | 20081218 |
| A novel image processing system includes a pixel position indicator and a pixel inserting unit. The pixel position indicator is configured to indicate insertion positions in the image data. The pixel inserting unit is configured to enlarge a size of the image data by inserting an additional pixel at each of the insertion positions and accordingly shifting the original pixels in a given direction. The additional pixel has a value lower than a given threshold. Each insertion position is at an approximate center of an area formed of pixels having values higher than the given threshold. A novel image forming apparatus incorporates such an image processing system and an electrophotographic system. The electrophotographic system is configured to form an image by irradiating a photoconductive surface with... |
| Maintenance management system and image forming apparatus | 20080310864 | 20081218 |
| A disclosed maintenance management system includes an upper-limit information storage unit configured to store an upper limit of usage for each component identifier of a component, which upper limit is expressed by using an accumulated number of revolutions of a photoconductive drum in an image forming apparatus; a revolution number information acquiring unit configured to acquire a number of revolutions of the photoconductive drum used in the image forming apparatus; and an alarm output unit configured to calculate the accumulated number of revolutions of the used photoconductive drum, calculate a component service life predictive value by using the upper limit stored in the upper-limit information storage unit for each component identifier, and output an alarm including component information pertaining to the corresponding component identifier in the... |
| Image forming apparatus and method to control a velocity ratio thereof | 20080310868 | 20081218 |
| An image forming apparatus and a method to control a velocity ratio thereof. The image forming apparatus includes a developing device to rotate opposite a photoconductive medium and to supply the photoconductive medium with a developer, and a controller to control a velocity ratio of the developing device to the photoconductive medium according to an accumulated number of printed copies.
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| Thin-film transistor array substrate for x-ray detector and x-ray detector having the same | 20080302969 | 20081211 |
| In a thin-film transistor (“TFT”) array substrate for an X-ray detector and an X-ray detector having the TFT array substrate, the TFT array substrate includes a gate wiring, a gate insulating layer, an active layer, a data wiring, a photodiode, an organic insulating layer and a bias wiring. The gate wiring is formed on an insulating substrate and includes a gate line and a gate electrode. The gate insulating layer covers the gate wiring. The active layer is formed on the gate insulating layer. The data wiring is formed on the gate insulating layer and includes a data line, source and drain electrodes. The photodiode includes lower and upper electrodes, and a photoconductive layer. The organic insulating layer covers the data wiring and the photodiode. The... |
| Photoconductive metamaterials with tunable index of refraction | 20080296710 | 20081204 |
| Materials and structures whose index of refraction can be tuned over a broad range of negative and positive values by applying above band-gap photons to a structure with a strip line element, a split ring resonator element, and a substrate, at least one of which is a photoconductive semiconductor material. Methods for switching between positive and negative values of n include applying above band-gap photons to different numbers of elements. In another embodiment, a structure includes a photoconductive semiconductor wafer, the wafer operable to receive above band-gap photons at an excitation frequency in an excitation pattern on a surface of the wafer, the excitation patterns generating an effective negative index of refraction. Methods for switching between positive and negative values of n include projecting different numbers... |
| Image forming apparatus and control method thereof | 20080298828 | 20081204 |
| An image forming apparatus capable of varying a transferring force according to an amount of developer, thereby improving transfer quality, and a control method thereof. The image forming apparatus includes a plurality of photoconductive media on which electrostatic latent images are formed, a transfer unit onto which color developer images respectively developed on the plurality of photoconductive media are transferred and superimposed in sequence, and a controller to control in a manner that electric potential differences between image areas and non-image areas of the electrostatic latent images vary in an order in which the color developer images are transferred.
... |
| Image forming device | 20080292359 | 20081127 |
| An image forming device includes an exposure unit having an exposure surface, an opposed surface facing the exposure surface, a first side surface connecting the exposure surface with the opposed surface, and a second side surface facing the first side surface, a positioning mechanism positioning the exposure unit with respect to a photoconductive body, the positioning mechanism including a first contact member contacting the exposure unit in a first contact point at a side of the first side surface, a second contact member contacting the exposure unit in a second contact point at the side of the first side surface, and a third contact member contacting the exposure unit in a third contact point at a side of the second side surface, the third contact point... |
| Radiation image detector | 20080283947 | 20081120 |
| A thermal deformation preventing layer is located between a recording photoconductive layer, which contains a-Se as a principal constituent, and a crystallization preventing layer, which is constituted of an a-Se layer containing at least one kind of element selected from the group consisting of As, Sb, and Bi. The thermal deformation preventing layer is constituted of an a-Se layer containing at least one kind of specific substance selected from the group consisting of a metal fluoride, a metal oxide, SiOx, and GeOx, where x represents a number satisfying 0.5≦x≦1.5.
... |
| Electrophotographic device utilizing multiple laser sources | 20080285987 | 20081120 |
| An electrophotographic device has first and second laser sources, each controllable to emit a laser beam, a scanning device arranged to direct the beams so as to sweep in a scan direction across a photoconductive surface and a controller configured to control the electrophotographic device. In at least one print mode, the electrophotographic device is controlled such that scan lines written by the first laser beam overlap with scan, lines written by the second laser beam, and a laser power of the first and second laser sources are controlled such that image data corresponding to select print elements are each partially written at a corresponding print element, position along at least two adjacent scan lines so as to combine energy in a manner that forms a... |
| Image forming apparatus and control device | 20080285994 | 20081120 |
| A low cost image forming apparatus capable of detecting a moving speed or meandering of a revolving endless belt with high accuracy to thereby prevent the color shift includes: a revolving endless belt sequentially superimposing and transferring toner images formed on a plurality of photoconductive drums directly thereon or onto a recording sheet conveyed thereby; an emission part irradiating light to the endless belt; an image receiving part receiving light reflected on the endless belt to obtain successive images of the endless belt; and a control part comparing the successive images obtained by the image receiving part with one another, calculating either of a moving speed and an amount of meandering of the endless belt, and correcting either of the moving speed and the meandering of... |
| Single layer type electrophotographic photoconductor and image forming device | 20080286673 | 20081120 |
| The present invention provides a single layer type electrophotographic photoconductor which exhibits the small number of generated black spots in a formed image and exhibits the excellent sensitivity characteristic even when the photoconductor is used for a long time or a photoconductor drum is rotated at a high speed and an image display device which includes the single layer type electrophotographic photoconductor. In the single layer type electrophotographic photoconductor which includes a photoconductive layer containing a binding resin, a hole transporting agent and an charge generating agent, the photoconductor contains a water-repellant polycarbonate resin as the binding resin, and a contact angle of pure water (measured temperature: 25° C.) with respect to the photoconductive layer is set to 100° or more.
... |
| Image sensor and fabrication method thereof | 20080277754 | 20081113 |
| A method of fabricating an image sensor contains providing a semiconductor substrate with a plurality of pixels defined thereon, forming pixel electrodes on the pixels, and forming a barrier device filled between adjacent pixel electrodes, wherein the barrier device contains a high-k material. Then, a photoconductive layer and a transparent conductive layer are successively formed on the high-k material layer and the pixel electrodes.
... |
| Radiation image detector | 20080272320 | 20081106 |
| An intermediate layer is located between a recording photoconductive layer and an electrode, which is either one of a bias electrode and a reference electrode, and which is located on the side at positive electric potential with respect to a charge accumulating section at the time of readout of electric charges of the charge accumulating section. The intermediate layer is an a-Se layer containing, as a specific substance, at least one kind of substance selected from the group consisting of an alkali metal fluoride, an alkaline earth metal fluoride, an alkali metal oxide, an alkaline earth metal oxide, SiOx, and GeOx, where x represents a number satisfying 0.5≦x≦1.5, in a concentration falling within the range of 0.003 mol % to 0.03 mol %.
... |
| Determining a location of an uncharged region on a photoconductive drum | 20080267646 | 20081030 |
| A method for determining a location of an uncharged region on a photoconductive drum in an electrophotographic device, comprising rotating the photoconductive drum, and charging a surface of the drum via a charge roller by application of a voltage to the charge roller. An electrical characteristic of one of the charge roller or photoconductive drum is measured, and an alteration in the electrical characteristic is used to determine a location of the uncharged region.
... |
| Phthalocyanine composition and photoconductive material, electrophotographic photoreceptor cartridge, and image-forming apparatus each employing the composition | 20080268357 | 20081030 |
| a+b+c+d>1.
... |
| Corrosion barrier layer for photoconductive x-ray imagers | 20080237481 | 20081002 |
| Improved corrosion resistance for direct X-ray imaging detectors is obtained by providing a pixelated, electrically conductive barrier layer between the X-ray sensitive material and the pixel electrodes. Each barrier layer can cover part or all of its corresponding pixel electrode. In cases where pixel electrodes makes contact to underlying circuitry through vertical vias, it is preferred for the barrier layers to cover the via sections of the pixel electrodes. The barrier layers for each pixel electrode can be spaced apart from each other, or they can all be included within a continuous film on top of the pixel electrodes. Such a continuous film can be pixelated by spatially modulating its properties (e.g., thickness, doping) to significantly reduce lateral conductivity from pixel to pixel.
... |
| Method of manufacturing a solid image pick-up device and a solid image pick-up device | 20080237652 | 20081002 |
| wherein the pattern further comprises at least one dummy pattern, and a surface level of the resist is not below a predetermined value over the semiconductor substrate.
... |
| Optical beam scanning apparatus and image forming apparatus | 20080239438 | 20081002 |
| In an image forming apparatus provided with an optical beam scanning apparatus according to the invention, an optical beam scanning apparatus of an overillumination scanning optical system includes a semiconductor laser device as a light source, a pre-deflection optical system, a polygon mirror, and a post-deflection optical system, with a width of the luminous flux made incident on the polygon mirror being wider than a width of one reflecting surface forming the polygon mirror, wherein at least two sheets of flat plate for transmitting the luminous flux scanned by the polygon mirror are provided in the post-deflection optical system. In accordance with an image forming apparatus provided with an optical beam scanning apparatus according to the invention, not only a wave front aberration on a photoconductive... |
| Transmissive, optically addressed, photosensitive spatial light modulators and color display systems incorporating same | 20080239458 | 20081002 |
| An optically addressed, photoconductive spatial light modulator (SLM) operates in a transmissive mode and is capable of modulating a wide spectrum of visible light. There is no pixel structure or native pixel resolution in the SLM. The SLM has no photodiodes and does not rectify. A light projection system (100) in which one or more SLMs (128, 130, 132) are placed includes a write (image definition) UV light path (102) and a read (illumination) visible light path (104) to form a color image projection display. The write UV light propagates from an image display pattern source (120) and either sequentially or continuously writes image patterns on the photoconductive SLMs. The read visible light propagates through the SLM and is modulated by an electro-optical material, the optical... |
| Methods and devices for selectively driving developer members within an image forming device | 20080240783 | 20081002 |
| A method and device for controlling toner transfer during the formation of a toner image within an image forming device is described herein. One exemplary image forming device includes a toner reservoir that stores toner of a first color, a developer member that receives toner from the toner reservoir, a photoconductive member proximate the developer member that receives toner from the developer member, and a driver. While rotating the photoconductive member, the driver selectively rotates the developer member based on a color content of the image. For example, the driver does not rotate the developer member while rotating the photoconductive member when the toner image being formed lacks the first color. Alternatively, the driver lows the rotational speed of the developer member while rotating the photoconductive... |
| Cleaning apparatus and image forming apparatus having the same | 20080240811 | 20081002 |
| A cleaning apparatus include a cleaning member to remove a waste toner remaining in a photoconductive medium and a housing to support the cleaning member, including a waste toner admission portion to provide a transfer path of the waste toner removed by the cleaning member, and a waste toner collecting portion to store the waste toner. The housing has a first thickness corresponding to the waste toner admission portion and a second thickness corresponding to the waste toner collecting portion so that the first thickness is smaller than the second thickness.
... |
| Radiation detector and method for producing photoconductive layer for recording thereof | 20080230710 | 20080925 |
| In a radiation detector, electrodes are provided on both sides of a photoconductive layer for recording. When the photoconductive layer for recording is irradiated with radiation during application of a predetermined bias voltage between the electrodes, electric charges are generated within the photoconductive layer for recording. Then, the generated electric charges are detected as an electric signal by the radiation detector. As the material for the photoconductive layer for recording, amorphous selenium having a coordination number of 1.95±0.02 is used.
... |
| Photoconductive devices with enhanced efficiency from group iv nanoparticle materials and methods thereof | 20080230782 | 20080925 |
| A device for generating a plurality of electron-hole pairs from a photon is disclosed. The device includes a substrate, a first electrode formed above the substrate, and a first doped Group IV nanoparticle thin film deposited on the first electrode. The device further includes an intrinsic layer deposited on the first doped Group IV nanoparticle thin film, wherein the intrinsic layer includes a matrix material with a melting temperature T1, wherein T1 is greater than about 300° C., and a set of quantum confined nanoparticles each with a melting temperature T2, wherein T2 is less than about 900° C., wherein the melting temperature T1 is less than the melting temperature T2. The device also includes a second doped Group IV nanoparticle thin film deposited on the... |
| Image developing apparatus and image forming apparatus using the apparatus | 20080232851 | 20080925 |
| An image developing apparatus includes an upper case; a lower case disposed on a lower side of the upper case, and internally housing a developing agent, and having an opening. A photoconductive drum is disposed on the upper case for forming an electrostatic latent image on a surface thereof. A charging roller is disposed on one side of an outer circumference of the photoconductive drum for charging the photoconductive drum. A developing roller having one part is exposed through the opening of the lower case to cooperate with the photoconductive drum for developing the electrostatic latent image. A scattering preventing unit disposed between the photoconductive drum and the developing roller, to prevent scattering of the developing agent supplied by the developing roller. The scattering preventing unit... |
| Image forming apparatus | 20080232859 | 20080925 |
| 35%≦D1≦70%.
... |
| Image forming apparatus | 20080232860 | 20080925 |
| D1>100−D2.
... |
| Image forming apparatus | 20080232862 | 20080925 |
| where Dt denotes the volume average particle diameter of the toner, pv denotes the intrinsic resistance value of a developing roller surface, Ra denotes the arithmetic average roughness of the developing roller surface.
... |
| Rotation member driving apparatus, photoconductive member unit, and image forming apparatus | 20070292160 | 20071220 |
| A rotation member driving apparatus for driving a printing member includes a printing member shaft attached to the printing member, a driving motor that drives the printing member, and a driving motor shaft attached to the driving motor. A first gear is attached to the driving motor shaft. A drive transmission gear is provided to transmit driving force of the driving motor to the printing member shaft from the first gear. An inertia member is arranged on the same axis as the driving motor.
... |
| Blocked polyisocyanates incorporating planar electron-deficient tetracabonylbisimide moieties | 20070292795 | 20071220 |
| The present invention is a photoconductive element containing an electrically conductive support, an electrical barrier layer disposed over said electrically conductive support and a charge generation layer capable of generating positive charge carriers when exposed to actinic radiation disposed over the barrier layer. The barrier layer is formed from a blocked polyisocyanate containing tetracarbonylbisimide groups. The present invention also discloses a new composition of a blocked polyisocyanate containing tetracarbonylbisimide groups.
... |
| Monomeric glass mixtures incorporating tetracarbonylbisimide group | 20070292796 | 20071220 |
| The present invention is a photoconductive element that includes an electrically conductive support, an electrical barrier layer disposed over said electrically conductive support, and disposed over said barrier layer, a charge generation layer capable of generating positive charge carriers when exposed to actinic radiation. The barrier layer includes a monomeric glass mixture incorporating tetracarbonylbisimide groups.
... |
| Light sensitive organic photoconductor | 20070287084 | 20071213 |
| An electrophotoconductive element which may be irradiated with laser light having a wavelength (λ) of about 350-500 nm which contains titanylphthalocyanine (TiOPC), which may be polymorphic. The electrophotoconductive element may therefore include an electroconductive support, a charge generation layer containing TiOPC, a charge transport layer and a source of laser light having a wavelength of about 350-500 nm. The charge transport layer may also exhibit light transmitting properties over the indicated laser wavelengths.
... |
| Q-switched cavity dumped laser array | 20070280305 | 20071206 |
| A microchip, Q-switched, cavity-dumped laser is end-pumped by VCSEL or a laser diode and comprises an electro-optic Q-switch mechanism actively controlled by photoconductive switches. The fast response time of the system and its small dimension produce short pulses (ten pico-second range), with high energy (uJ range). The microchip structure may be built using planar, wafer-like components such that a high-density array of lasers may be manufactured without tight alignment tolerances, providing efficient power or energy scaling.
... |
| Multilayer type electrophotographic photoconductor and image forming apparatus | 20070281227 | 20071206 |
| The present invention is to provide a multilayer type electrophotographic photoconductor capable of stably obtaining a high image quality image over a long term by restraining the exposure memory and the photo memory, and an image forming apparatus comprising such a multilayer type electrophotographic photoconductor. A multilayer type electrophotographic photoconductor comprising a charge generating layer containing at least a charge generating agent on a base member directly or via an intermediate layer, and a charge transporting layer containing at least a charge transporting agent and a binder resin formed successively, wherein the light absorption degree at a 680 nm wavelength light beam in the photoconductive layer of the multilayer type electrophotographic photoconductor is of a value of 0.8 or less, and the light absorption degree at... |
| Electrophotographic photoconductor and image forming apparatus | 20070281229 | 20071206 |
| A charge transporting substance having three stilbene structures or butadiene structures in a molecule, represented by the following general formula is used as an organic photoconductive material. An electrophotographic photoconductor is prepared by causing a photosensitive layer which is disposed on a conductive support, to contain the organic photoconductive material in order to dispose the photoconductor to an image forming apparatus.
... |
| Image forming apparatus and image forming method | 20070274749 | 20071129 |
| In an image forming apparatus of this invention, a cleaning bias of opposite polarity to toner is applied to a conductive cleaning blade, thus enhancing the cleaning performance of the cleaning blade. Thus, even for substantially spherical toner, good cleaning is provided without increasing the pressing force of the cleaning blade to a photoconductive drum. The durability of the photoconductive member and the cleaning blade is improved and maintenance is reduced.
... |
| Exposure device and image forming apparatus | 20070263065 | 20071115 |
| An exposure device for exposing the charged surface of a photoconductive drum is provided with a light source for emitting light based on image information; a rotary multifaceted mirror for reflecting the light emitted from the light source to scan the surface of the photoconductive drum; a driving mechanism for drivingly rotating the rotary multifaceted mirror; an inner casing for covering at least the driving mechanism and the rotary multifaceted mirror; and an outer casing for covering the inner casing from the outside. An air vent for communicating the inside and outside of the inner casing is formed in a part of the inner casing facing the rotary multifaceted mirror.
... |
| Electrophotographic image recording apparatus and image processing apparatus | 20070264050 | 20071115 |
| The electrophotographic image recording apparatus includes a photoconductive image bearing member, a charging unit, an exposure unit, developing means, a transferring unit suited to superimpose and transfer the plural kinds of toner images obtained by the developing means, and a processing unit adapted to execute halftone processing image data to be sent to the exposure unit, wherein the plural kinds of toners include two kinds of toners of the same hue and differing in density from each other, and the processing unit tone-processes by the use of a screen pattern having different screen angles for the respective toners. In an electrophotographic image recording apparatus for forming an image by the use of a plurality of colorants including two kinds of colorants of substantially the same hue... |
| Radiographic-image recording medium containing shock-resistant member | 20070257217 | 20071108 |
| An image recording medium includes: a support which is transparent to radiation for use in recording, and resistant to shock; a wavelength conversion layer which contains an organic binder and a fluorescent material which converts the radiation into visible light; a first electrode layer which is transparent to the visible light; a recording-side photoconductive layer which exhibits photoconductivity when the recording-side photoconductive layer is exposed to the visible light; a charge storage region which stores electric charges which are generated in the recording-side photoconductive layer in response to exposure to the visible light; a reading-side photoconductive layer which exhibits photoconductivity when the reading-side photoconductive layer is exposed to reading light; and a second electrode layer which is transparent to the reading light.
... |
| Photosensing thin film transistor | 20070257256 | 20071108 |
| A thin film transistor (TFT) photosensitive to illumination with light, which may enhance the transistor's characteristics and the controlling parameters of the transistor state. The transistor comprises an insulating substrate; a source electrode; a drain electrode; a semiconductor layer of a first semiconductor material, which forms a channel of the transistor; a gate electrode; and an insulating layer between the gate electrode and the semiconductor layer. A second semiconductor material is disposed between and in electrical connection with the semiconductor layer and at least one of the source electrode and the drain electrode. The second semiconductor material is photoconductive.
... |
| Biologically inspired synthesis of thin films and materials | 20070254141 | 20071101 |
| A method for the fabrication of nanostructured semiconducting, photoconductive, photovoltaic, optoelectronic and electrical battery thin films and materials at low temperature, with no molecular template and no organic contaminants. High-quality metal oxide semiconductor, photovoltaic and optoelectronic materials can be fabricated with nanometer-scale dimensions and high dopant densities through the use of low-temperature biologically inspired synthesis routes, without the use of any biological or biochemical templates.
... |
| Architecture for an image-forming device | 20070248377 | 20071025 |
| An image forming device includes a body having a top, a bottom, a front and a back. In one embodiment, a plurality of horizontally-aligned imaging units, each comprising a photoconductive member, transfer toner images to an intermediate transfer mechanism located below the plurality of imaging units. A pick mechanism may pick media sheets from a media input tray and feeds the media towards the front of the body. For duplex printing, the media sheets may travel along a duplex path that extends along the front of the body. In one embodiment, an access door at the front of the body pivots between a closed position and an open position. In the open position, a user may gain access to both media paths.
... |
| Systems and methods for optical actuation of microfluidics based on opto-electrowetting | 20070243110 | 20071018 |
| The invention is related to methods and apparatus that manipulate droplets in a microfluidic environment. Advantageously, embodiments of the invention manipulate droplets by controlling the electro-wetting characteristics of a surface with light, thereby inducing a gradient in the surface tension of a droplet. The gradient in the surface tension propels the droplet by capillary force. A variety of operations, such as transporting, joining, cutting, and creating can be performed. Advantageously, embodiments of the invention obviate the need to create a relatively large and complex control electrode array. A plurality of photoconductive cells or a layer of a photoconductive material selectively couples an electrode carrying an electrical bias to otherwise floating conductive cells in response to a beam of light. The electrical bias applied to the conductive... |
| Controlling surface characteristics of an image forming device component | 20070237900 | 20071011 |
| The present invention relates to controlling the surface characteristics of an image forming device component. The device may include photoconductive elements or non-photoconductive elements such as rollers or blades. The surface characteristics such as texture may be controlled by introducing a coating to the surface of a component or modifying the mechanical properties of the component surface while in a physically stressed state. This may then be followed by release of such stress and development of strain at the component surface.
... |
| Image forming device and power transmission mechanism | 20070231007 | 20071004 |
| An image forming device includes a device main body, a drum unit, a stud which is fixed to a frame of the device main body, and a drum drive transmitting gear which is supported by the stud such that the drum drive transmitting gear can axially rotate. The drum unit includes a unit frame and a photoconductive drum which is supported on the unit frame such that the photoconductive drum can axially rotate. The photoconductive drum has a driven transmission gear at one end. When the drum unit is inserted into the device main body, the drum drive transmitting gear and the driven transmission gear are engaged with each other, and an end portion of the stud can be inserted into and received by an engaging... |
| Charging device, photoconductive drum unit, and image forming device | 20070223961 | 20070927 |
| A photoconductive drum unit includes a frame, a photoconductive drum, and a scorotron charging unit. The charging unit includes a pair of mounting members, a discharging electrode filament, a shield casing, a grid, and a connecting member. The mounting members are mounted and fixed at both end portions of the frame. The discharging electrode filament extends between the mounting members in a tensioned state. The shield casing is supported by being connected between the mounting members and covers the discharging electrode filament. The grid extends between the mounting members in a tensioned state and is arranged in an opening of the shield casing. The connecting member connects the mounting members and the shield casing in a state in which a slight displacement is permitted between the... |
| Olefin polymers for imaging members | 20070225461 | 20070927 |
| The present invention relates to an imaging member such as a photoconductor that includes an olefin based polymer. The olefin based polymer may be formed from a metathesis polymerization of an olefin or the chain polymerization of a cycloolefin. A method is also disclosed including the formation of a solution for coating a photoconductive surface. The method involves the addition of the olefin based polymer to a solvent followed by coating of a photoconductive surface which coating may then serve as a charge transport layer within an image forming device.
... |
| Organic photovoltaic cells utilizing ultrathin sensitizing layer | 20070215868 | 20070920 |
| A photosensitive device includes a plurality of organic photoconductive materials disposed in a stack between a first electrode and a second electrode, including a first continuous layer of donor host material, a second continuous layer of acceptor host material, and at least one other organic photoconductive material disposed as a plurality of discontinuous islands between the first continuous layer and the second continuous layer. Each of these other photoconductive materials has an absorption spectra different from the donor host material and the acceptor host material. Preferably, each of the discontinuous islands consists essentially of a crystallite of the respective organic photoconductive material, and more preferably, the crystallites are nanocrystals.
... |
| Systems and methods for using multiple scanner facets to write a scan line of image data in an electrophotographic device | 20070216748 | 20070920 |
| An imaging system comprises a laser source for emitting a beam, a photoconductive surface, a scanning device and a controller. The controller designates at least a first part and a second part of each line of image data, corresponding to a first part and a second part of each associated sweep of the beam. The laser source is modulated based upon the first part of the line of image data during the first part of a first one of the associated sweeps of the beam. The laser source is not modulated according to image data for the second part of the first one of the sweeps. During the first part of a second one of the associated sweeps of the beam, the laser source is not... |
| Driving control device, image forming apparatus and recording medium for recording driving control program | 20070216758 | 20070920 |
| A control unit for a copying machine is equipped with a first rotation speed detecting unit for detecting a first rotation speed as a rotation speed of a polygon mirror; a switching judging unit for judging whether the first rotation speed reaches a value equal to or higher than a first switching speed set in advance; and a driving control unit for causing a second motor to start driving of a photoconductive drum, while causing a first motor unit to stop driving of polygon mirror for a mirror stop period set in advance, in the case that the switching judging unit judges that the first rotation speed reaches a value equal to or higher than the first switching speed, and, after the mirror stop period is... |
| Optically addressed spatial light modulator and method | 20070216985 | 20070920 |
| An optical device has an electrically insulating first barrier layer disposed over a first electrode layer, a photoconductive layer disposed over the first barrier layer, and a carrier confining layer disposed over the photoconducting layer. The carrier confining layer defines a volume throughout which a plurality of carrier traps are dispersed. Further, an electrically insulating second barrier layer is disposed over the carrier confining layer, a light blocking layer is disposed over the second barrier layer for blocking light of a selected wavelength band. A reflective layer is disposed over the light blocking layer for reflecting light within the selected wavelength band, a birefringent or dispersive layer is disposed over the reflective layer, and an optically transmissive second electrode layer is disposed over the birefringent or... |
| Photoconductive element and sensor device | 20070218376 | 20070920 |
| There is provided a photoconductive element capable of generating and detecting broadband electromagnetic waves such as terahertz waves at a comparatively high efficiency by decreasing or avoiding the absorption of electromagnetic waves into a substrate. A photoconductive element 1 includes a photoconductive film 5 exhibiting conductivity by the radiation of light, a substrate 6 holding the photoconductive film and a thin film sandwiched between the photoconductive film 5 and the substrate 6, the thin film being different in composition from the photoconductive film 5 and the substrate 6. The photoconductive film 5 is provided with an antenna 7 having a gap portion 2 and an electrode 4 electrically connectable to the antenna 7. At least a part of the photoconductive film where the gap portion 2... |
| Electrophotographic photoconductor and image forming apparatus | 20070218379 | 20070920 |
| A·C−1·d−1>1.75×104 (1)
... |
| Image forming apparatus | 20070212104 | 20070913 |
| An image forming apparatus includes photoconductive drums aligned side by side for toner images in colors to be formed on peripheral surfaces thereof. A transfer belt turns while stretched over rollers for the toner images to be transferred thereon by being superimposed one another as a surface thereof abuts on the peripheral surfaces of the photoconductive drums. A transfer roller transfers the toner images from the transfer belt onto a recording sheet. The transfer belt uses the position of the transfer roller as a turning position and turns to have a first side that moves in a first direction towards the turning position while abutting the peripheral surfaces of the photoconductive drums and a second side that moves opposite to the first direction using the turning... |
| Electrophotoconductor and image forming apparatus | 20070207395 | 20070906 |
| An organic photoconductive material which is useful as a raw material compound for a variety of functional materials and makes it possible to implement an electrophotoconductor which is excellent in terms of the charge transporting performance, excellent in terms of dissolution in solvents and compatibility with resins, and excellent in terms of both the electrical properties and durability is provided. An example is an asymmetric bishydroxy compound which can be represented by the following structural formula (1aa). This compound is contained in a charge transforming layer 4 or a surface protective layer 5 of an electrophotoconductor 18. As a result, an electrophotoconductor 18 which is excellent in terms of the electrical properties and durability and can stably form high quality images without image defects such as... |
| Charge generating composition | 20070207396 | 20070906 |
| The present disclosure is directed to charge generating compositions and methods of making the charge generating compositions. The composition may comprise one or more polymers comprising styrene units and allyl alcohol units, and one or more photoconductive particles. Electrophotographic devices employing the compositions, including methods of making the devices, are also disclosed.
... |
| X-ray light valve based digital radiographic imaging systems | 20070201616 | 20070830 |
| The present invention provides a digital x-ray radiographic imaging system. The system is based on a photoconductive detector and an electro-optic light modulator, where the photoconductive detector layer absorbs x-rays that have passed through an object to form an exposure of the object. The absorbed x-rays create a static optical image, which is stored in the electro-optic light modulator, allowing the capture of the optical image to continue over longer time. The optical image is digitized using a scanning system and an external light source. The image is then processed and stored by a computer. After the optical image is recorded, an erasing mechanism is used to reset the system before a new exposure is made.
... |
| Image forming apparatus | 20070201887 | 20070830 |
| An image forming apparatus includes: a photoconductive drum on which an electrostatic latent image is formed. A developer develops the electrostatic latent image to form a toner image on the photoconductive drum. A transfer-fixer transfers the toner image from the photoconductive drum to a recording sheet and fixes the toner image on the recording sheet. A waste toner particle collector collects toner particles remaining in the developing section into a collection container. A toner amount detector detects the amount of toner particles collected in the collection container. A notifying portion notifies a user when the amount of toner detected reaches a predetermined observing amount. A collection amount setting portion enables a reduced collection amount to be set for the collection of waste toner particles in the... |
| Photoconductive polymer | 20060289058 | 20061228 |
| A photoconductive polymer comprising hetrocyclic residues comprised of thiophene units fused to substituted or unsubstituted tetrathiafulvalene units, said thiophene units being conjugated to, and linked by, olefinic double bonds. Particularly preferred polymers are of the formula (I) as defined in the specification. The polymers of the invention may be used in photovoltaic devices, e.g. in the form of solar cells, batteries or transistors.
... |
| Electrostatic recording medium having reading-side photoconductive layer of inorganic oxide | 20060290994 | 20061228 |
| An electrostatic recording medium includes: a first conductive layer which is transparent to radiation for recording; a recording-side photoconductive layer which is formed above the first conductive layer and becomes conductive when the recording-side photoconductive layer is exposed to the radiation for recording; a charge-accumulation region which is formed above the recording-side photoconductive layer and accumulates electric charges being generated in the recording-side photoconductive layer and having a latent polarity; a reading-side photoconductive layer which is formed of inorganic oxide above the charge-accumulation region and becomes conductive when the reading-side photoconductive layer is exposed to an electromagnetic wave for reading; and a second conductive layer which is formed above the reading-side photoconductive layer and transparent to the electromagnetic wave for reading.
... |
| Image forming apparatus | 20060291912 | 20061228 |
| An image forming apparatus prints an image on paper. A developing roller supplies toner to an electrostatic latent image on a photoconductive drum to form a toner image. A developing blade forms a thin layer of toner on the developing roller. A transfer unit transfers the toner image onto the paper. A fixing unit fixes the toner image on the paper into a permanent image. The developing roller rotates at a circumferential speed from 150 to 250 mm/sec. The developing blade applies a line pressure in the range of 34-68 gf/cm to the developing roller. The toner has a glass transition temperature Tg from 45 to 77□, a softening temperature from 58 to 98□, a flow-beginning temperature Ts from 78 to 138□, and a melting point... |
| Photoreceptor with three-layer photoconductive layer | 20060292466 | 20061228 |
| An imaging member includes a conductive substrate, a charge generating layer, a charge transport layer, and an intermediate layer between the charge generating layer and the charge transport layer, the intermediate layer including a hole transport material, such as three different hole transfer materials, dispersed in a film forming binder, such as two different binder materials.
... |
| Psychotropic drug screening device based on long-term photoconductive stimulation of neurons | 20060292549 | 20061228 |
| The invention pertains generally to the field of psychotropic drug discovery and neuroscience. More specifically, the invention refers to a device that allows the long-term stimulation of cultured neurons grown on a silicon die, thereby replacing the use of intact animal models. The device consists of a controlled sterile environment in which the neuronal cultures can grow, and into which specific candidate compounds (e.g., psychotropic drugs) are added. During the period of growth, which can be extended for months, specifically tailored patterned activity can be applied to the neuronal network, simulating the activity normally found in a brain. The neuronal networks are grown on a silicon surface which is targeted by a light source, which functions to alter the connectivity of the surface below a specific... |
| Method and apparatus for controlling transfer voltage in image forming device | 20060285865 | 20061221 |
| A method and apparatus for controlling a transfer voltage applied to a transfer roller in order to transfer a toner image formed on an intermediate transfer member to a medium in a multi-path type electrophotographic image forming device are provided. An amount of toner transferred from the photoconductive member to the intermediate transfer member is detected, and a transfer voltage applied to the transfer roller using the detected amount of toner is determined. Accordingly, when an optimum transfer voltage is determined to be applied to the transfer roller in the multi-path type electrophotographic image forming device, by determining the transfer voltage applied to the transfer roller considering the amount of toner detected while the toner image is transferred from the photoconductive member to the intermediate transfer... |
| Imaging member | 20060286470 | 20061221 |
| A photoconductive imaging member is provided comprising a substrate, an optional hole blocking layer, a charge generation layer, and a charge transport layer. The charge generation layer includes a charge generating material and a binder, wherein the binder comprises an electron transport material chemically attached to a polymeric binder material.
... |
| Photoconductive member | 20060286472 | 20061221 |
| A photoconductive imaging member containing a photogenerating layer, and a charge transport layer, and wherein the charge transport layer is comprised of an arylamine containing a moiety that minimizes oxidation.
... |
| Latent electrostatic image bearing member, and process cartridge, image forming apparatus and image forming method | 20060286473 | 20061221 |
| A latent electrostatic image bearing member including at least a support, a photoconductive layer on the support and a surface layer on the photoconductive layer, wherein a film having the same composition as the surface layer is formed on a slide glass such that the film had a thickness of 5 μm; and the haze value measured after rubbing the film with a steel wool of #000 and a load of 500 gf for 50 times is 10% or less.
... |
| Image forming apparatus having a detachable cartridge including a photoconductive drum with axis shaft having a minimal rotational eccentricity, and a method of assembling the image forming apparatus | 20060275053 | 20061207 |
| An image forming apparatus includes an image forming mechanism and an image bearing member. The image forming mechanism is configured to form an image. The image bearing mechanism is detachably provided to the image forming apparatus. The image bearing mechanism includes an image bearing member configured to bear the image formed by the image forming mechanism, and a through shaft configured to support the image bearing member.
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| Asymmetric bis-hydroxyenamine compound, electrophotographic photoreceptor and image forming apparatus | 20060275683 | 20061207 |
| There is provided an organic photoconductive material that can realize an electrophotographic photoreceptor which is not only excellent in charge transporting ability but also excellent in solubility in a solvent and compatibility with a resin and moreover, which is excellent in both electric properties and durability, and the organic photoconductive material that is useful also as a raw material compound for various types of functional materials. An asymmetric bis-hydroxyenamine compound represented by the following structural formula (1aa) is provided. The compound is allowed to be contained in a charge transporting layer or a surface protective layer of an electrophotographic photoreceptor. This leads realization of the electrophotographic photoreceptor which is excellent in electric properties and durability and can stably form an image of high quality being free... |
| Image formation device and image formation process | 20060275685 | 20061207 |
| An image formation device including: a charge conservation member including a transparent conductive substrate, a photoconductive layer formed on the transparent conductive substrate, and microscopic isolated island-form charge sites, numerous microelectrodes for charge conservation being formed on the photoconductive layer to be distributed more finely than individual pixels; a conductive voltage supply member touching the microscopic isolated island-form charge sites; a power source which, when the voltage supply member touches the microscopic isolated island-form charge sites, applies voltage between the transparent conductive substrate and the voltage supply member, for forming an electric field in the charge conservation member; and an exposure section which, in a state in which the electric field is formed in the charge conservation member, performs image exposure from the transparent conductive substrate... |
| Photoconductive imaging members | 20060269856 | 20061130 |
| A photoconductive imaging member including at least a substrate, an optional thick undercoat layer, a charge generating layer comprising a high sensitivity pigment and a low sensitivity pigment, and a charge transport layer.
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| Radiation image detector | 20060261299 | 20061123 |
| A radiation image detector with improved readout efficiency. The detector records a radiation image by generating and storing electric charges when irradiated with radiation, and the image is read out by irradiating readout light. The detector includes first line electrodes and second line electrodes disposed alternately with each other. An opaque line insulator that blocks the readout light is provided on each side face extending in the longitudinal direction of each second line electrode. The insulator has a width smaller than the distance between the first and second line electrodes. This arrangement allows the electric charges in the area of the photoconductive layer adjacent to the side faces of the first line electrodes to be fully discharged, and the electric charges in the area of the... |
| Developing device and image forming apparatus | 20060263111 | 20061123 |
| A developing device includes a developing sleeve for supplying toner particles to a latent image area on a peripheral surface of a photoconductive drum while rotating about an axis. The developing sleeve has a permanent magnet therein. Two magnetic members are provided in the developing device and face opposite ends of a peripheral surface of the developing sleeve at a predetermined distance from the developing sleeve. The magnetic members have arc-shaped inner surfaces. A blade is spaced a predetermined distance from a central portion of the peripheral surface of the developing sleeve. The blade adjusts the amount of toner particles supplied to the photoconductive drum. The gap between the arc-shaped inner surface of the magnetic member and the peripheral surface of the developing sleeve gradually increases... |
| X-ray detector element | 20060255279 | 20061116 |
| The invention relates to a detector element for x-radiation, which can be used in particular in a flat dynamic x-ray detector (PDXD). In the detector element, a directly converting conversion layer (2) is arranged between an electrode layer (2) and a matrix of pixel electrodes (4), there also being a photoconductive separating layer (3) between the pixel electrodes (4) and the conversion layer (2). In the unilluminated state, the separating layer (3) acts as an electrical barrier for free charge carriers of the conversion layer (2), which have been produced by x-radiation and migrate in the electric field between the electrodes (1, 4). After readout of the charge transfers in the pixel electrodes (4), the separating layer (3) can be rendered conductive by illumination with reset... |
| Method and apparatus for image quality diagnosis | 20060256394 | 20061116 |
| For an automatic image diagnosis, toned images or residual toner existing on the photoconductive surface of a photoreceptor may be scanned with light energy provided by the raster scanning system. The light energy, which may be reflected from the photoreceptor surface, may be disturbed due to scattering/absorption in toned or damaged surface regions. The light energy may be directed to image sensors to obtain a spatial image map of the photoreceptor surface in conjunction with pixel clock information present for the raster scanning system. The evaluation may be made based on the spatial image map. Diagnostic and maintenance may then be applied to correct the defect and/or adjust a tone level for a latent image formed on the photoreceptor surface.
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| White vector feedback adjustment | 20060257159 | 20061116 |
| Control circuitry associated with an electrophotographic imaging device is adapted to operate in conjunction with a sensor to adjust a difference in electrical bias between a photoconductive surface and an associated roller. The sensor detects a reflectance or luminosity of a developed image and the control circuitry uses this detected information and information related to reflectance or luminosity of the underlying surface and the developing toner to determine whether the developed image is produced as desired. The control circuitry adjusts the difference in electrical bias between the photoconductive surface and an associated roller in response to a comparison between the detected and desired images. In one embodiment, a predetermined test pattern is developed over a range of electrical bias differences and an optimum operating point is... |
| Developing device and image forming apparatus | 20060257162 | 20061116 |
| A developing device (50) includes a developing sleeve (53) for supplying toner particles (T) to a latent image area (22) on a peripheral surface of a photoconductive drum (20) while rotating about a central shaft (534). The developing sleeve (53) has an immovable sleeve magnet (533) therein. Two magnetic members (82) are disposed in opposite end portions of the developing sleeve (53) and are spaced a predetermined distance from the peripheral surface of the developing sleeve. Each magnet member (82) has an arc shape. A magnetic member magnet (83) is mounted in the magnet member (82) and faces a sleeve magnet (533) so that opposite facing portions of the magnetic member magnet (83) and the sleeve magnet (533) have the same polarity. With this construction, toner... |
| Wet type image forming apparatus | 20060257170 | 20061116 |
| A wet type image forming apparatus, having a latent image forming unit with a photoconductive drum, and a developing unit with a developing solution supplying system that supplies developing solution to a developing roller, is provided. The developing roller is adapted to supply toner contained in the developing solution to the photoconductive drum. The developing solution supplying system includes a first roller and a second roller. The first roller and the second roller are arranged in vicinity to each other, and the second roller is in contact with the developing roller. A portion of the developing solution is retained in a pit portion between the first roller and the second roller. The developing solution supplying system includes a flow blocking system to prevent the developing solution... |
| Photoconductive members | 20060257766 | 20061116 |
| A photoconductive imaging member containing a photogenerating layer, and a charge transport layer containing a binder and a polyol ester.
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| Photoconductive members | 20060257769 | 20061116 |
| A photoconductive imaging member containing a photogenerating layer, and a charge transport layer containing a binder and a suitable polyimide, and more specifically, an amorphous polyimide.
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| Decorative, light-sensitive, vibration-activated personal safety beacon | 20060249662 | 20061109 |
| An electronic zipper-pull personal safety beacon that is light-sensitive and vibration-activated which includes a decorative housing (22) for the support of: a power source (1) and an electronic circuit (21) further comprising; a printed circuit board, a photoconductive cell (2), a vibration detector (3), and a timer (5) to enable at least one self-flashing light emitting diode (6) for a predetermined period of time.
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| Image forming apparatus | 20060251380 | 20061109 |
| An image forming apparatus writes an image to a display recording medium at a write position. The image forming apparatus includes an insertion slot, a transport unit, an image light emitting device and a separating/contacting unit. The display recording medium is inserted into the insertion slot. The transport unit transports the display recording medium inserted, to/from the write position. The image light emitting device includes an emitting surface that emits two-dimensional image light for irradiating a photoconductive layer of the display recording medium at the write position. The separating/contacting unit brings the emitting surface separate from a display recording medium surface when the display recording medium is not opposed to the image light emitting device, while the transport unit transports the display recording medium. The separating/contacting... |
| Multi-level optical writer | 20060244698 | 20061102 |
| A multi-level optical writer for writing an image by illumination to an optical-write-type recording medium laid with a display layer having a memory nature and a photoconductive layer, the optical writer includs: a holding portion holding the optical-write-type recording medium; and a write section for writing a multi-level image to the display layer by illuminating, to the photoconductive layer, image light having optical dots different in size in accordance with a gray level.
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| System and method for scaling data to compensate for slanted scanning in a bidirectional scanning laser printer | 20060244807 | 20061102 |
| A scanning system is adapted to scan an image beam across a photoconductive surface. The scanning system includes an oscillating mirror and is operable to generate an image beam and to reflect the image beam off the oscillating mirror to bidirectionally scan the image beam across the photoconductive surface and thereby discharge regions on the surface. The system is further operable to dynamically scale an intensity of the image beam as a function of a position of the image beam on the photoconductive surface.
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| Small footprint charge device for tandem color marking engines | 20060245789 | 20061102 |
| In a xenographic printing apparatus, a small footprint charging device may provide uniformity of charge and/or long life in a small diameter photoconductive drum. A grid shaped to be parallel to the drum surface and including small wing shields may reduce or even prevent leakage of corona current to the photoconductor around the grid region, which may otherwise detract from charge uniformity.
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| Image forming apparatus | 20060245790 | 20061102 |
| A control part 33 rotates a developer roller 21a at a second rotation speed, which is slower than a normal rotation speed during an image formation period (first rotation speed), during a non-image formation period while a heater 14 is in use. This prevents deformation of the developer roller 21a caused by radiant heat from a photoconductive drum 41, effectively prevents the appearance of image fogging, concentration unevenness, and the like, and also suppresses toner deterioration in a development unit 21.
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| Laser scan unit assembly and an image forming apparatus having the same | 20060238598 | 20061026 |
| A laser scan unit for an image forming apparatus is provided that compensates for an error of the irradiating position of a laser beam on a photoconductive medium, such as the error caused by processing errors or assembling errors of component parts. The laser scan unit includes a frame, a laser scan unit mounted in the frame and projecting a laser beam on a photoconductive medium according to printing data, and a control unit tilting the laser scan unit on the frame to adjust the irradiation position of the laser beam on the photoconductive medium in main scanning and sub scanning directions.
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| Photoreceptors,developing cartridge using the same, and image forming apparatus using the same | 20060239714 | 20061026 |
| A developing cartridge and an image forming apparatus having a photoreceptor drum are provided. The photoreceptor drum includes a pair of sleeves having outer diameter units inserted into the ends of a cylindrical drum on which a photoconductive material layer is formed, inner diameter units to which shafts are rotatably coupled, and at least two protrusion units separated from each other in a length direction of the shafts and contacting the shafts by protruding from the inner diameter units. Accordingly, the location tolerance and the assembly tolerance of the photoreceptor drum can be reduced by only modifying the shape of the sleeves, without adding additional parts. As a result, printing defects such as voids and unevenness can be advantageously prevented, since the developing nip and developing... |
