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7619642 |
Image forming apparatus
An image forming apparatus in which a plurality of color component images of different colors, which include a reference color (e.g. black) serving as a reference and adjustment colors (e.g. cyan,...
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7499193 |
Image forming apparatus
There is described an apparatus, which includes an image-forming section to form a multicolor image on a recording medium by recording the unicolor images in such a manner that the unicolor images...
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7436540 |
Image recorder having more than one recording head and image recording system containing the image recorder
A control part comprises a division location setting part for setting a division location based on an image data; a scan start position setting part for setting scan start positions of recording...
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7265769 |
Device and method for registering multiple LED bar imagers in an image-on-image system
A method and apparatus adjusting the lateral position of an LED bar may minimize image banding in image-on-image systems having multiple LED bar imagers. A photoreceptor may be transported past a...
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7129964 |
Image printing apparatus and image printing method
In a multibeam-type image printing apparatus, a process of adjusting a beam scanning position at which a photosensitive body is scanned is simplified. More specifically, consumption of a developing...
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7071959 |
Method and apparatus for arranging light-emitting diodes and light-emitting elements
After measurement, light-emitting elements are temporarily numbered ( 1 ), . . . in measuring order and arranged successively on a temporary palette. In parallel with this operation, measured light...
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6985627 |
LED bar array high addressable imaging in 2-dimensions
An imaging apparatus includes an input that receives a stream of image pixels such as high addressable bits, multiple bits per pixel or binary image bits representing an input image and a processor...
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6952294 |
Method of reading an image, method of forming a color image, device for forming a color image, silver halide color photosensitive material, and a device for processing a photosensitive material
The present invention relates to a method of reading an image, which comprises exposing a color photosensitive material having at least three photosensitive layers containing blue-, green- and...
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6864906 |
Light scanning device and image forming apparatus
A light scanning device adjusts scanning speed uniformity with high accuracy to obtain an image having fine absolute position accuracy. The light scanning device is mounted on an image forming...
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6856426 |
Solid state scanning type optical recording device
An 8-bit (256 gradient) image is represented using a driver IC of 6-bit (64 gradient) construction to drive a plurality of arrayed optical shutter elements. The image data are divided into 64...
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6690404 |
Image forming apparatus and method for changeable image forming modes between a single color mode and a multiple color mode
An optical system for an image forming apparatus which a first light source for selectably emitting a plurality of image forming light beams based upon control signals and a second light source for...
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6614506 |
Image forming apparatus and registration correcting method of the image forming apparatus
An image forming apparatus for sequentially superimposes images formed by a plurality of image forming stations for forming images of different colors, respectively, on a transferring material born...
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6603574 |
Image color registration sensor calibration
Color imaging methods and systems are provided where each color separation image is to be registered in a composite manner under a variety of machine conditions. Registration sensors are provided...
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6593951 |
Optical writing system directed to miniaturization thereof, and image forming apparatus employing it
Optical systems are disposed in the two symmetrical direction with respect to an optical deflector, and direct the optical beams deflected by the optical deflector into respective surfaces to be...
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6580443 |
Color image forming device with simplified optical unit incorporating a laser source
An intermediate belt made of an endless belt is provided by 45 degrees inclined horizontally and looped over two rollers at both its ends, and four photosensitive drums are provided in contact with...
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6545692 |
Digital color image forming apparatus having a recording element comprised of a light emitting array
An image forming apparatus for forming an image on a recording material includes a photosensitive member, an array of light emitting elements for exposing the photosensitive member in accordance...
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6473105 |
Optical scanning apparatus for preventing color misregistration
An optical scanning apparatus is configured to comprise (a) a deflector for deflecting and scanning a plurality of bundled incident laser beams, (b) a conversion optical system for converting the...
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6320603 |
Ina xerographic printer, equalizing wear on the photoreceptor with a supplemental exposure step
A xerographic printer includes a rotatable photoreceptor which is exposed, with each cycle, by a regular exposure device to create an image desired to be printed. Elsewhere along the photoreceptor...
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6249305 |
Color image forming apparatus
An image forming apparatus is provided which includes an image carrying member, a plurality of charging devices for charging the image carrying member, a plurality of laser exposing units for...
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6236416 |
Image forming apparatus featuring a plurality of light emission elements on a single chip
An image forming apparatus includes a photosensitive member, an exposure device includes a single-chip light emission element array formed by integrating a plurality of light emitting elements in a...
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6204867 |
Color image forming apparatus having laser scanner control means
The image processing circuit essentially includes an image data input portion, an image processing portion, an image data output portion, an image memory composed of a hard disk drive etc., a...
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6181448 |
Multi-laser scanning unit
A multi-laser scanning unit (LSU) in which scanning lines incident parallel onto a photoreceptor have the same scanning direction. The multi-laser scanning unit includes: a driving source for...
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6169558 |
Process and apparatus for high speed laser printing using a roller having a convertible structure
A laser printing process using a rotary light sensitive roller electrically charged by points by a laser beam and intended for receiving onto the charged points particles of a toner powder and then...
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6148165 |
Apparatus with bipolar photoconductive element for making multicolor electrophotographic images and method for producing images
A method and an apparatus for producing, in a single pass, an electrophotographic image comprising at least two colors. The photoconductive element is bipolar, and has a single active layer and a...
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6094208 |
Color image forming apparatus with scanner motor synchronization
In this digital color copier, laser beam scanner units of the same configuration are arranged in parallel with each other, and all are controlled in a unified manner by a laser control unit...
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6057866 |
Color image forming apparatus and method using color compensation
A color image forming method, including the steps of: charging a front surface of a photoreceptor; conducting image wise exposure onto the charged front surface from a rear surface of the...
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6055006 |
Image forming apparatus having easily aligned light emitting element arrays
The object of the invention is to provide a small-size image forming apparatus in which a plurality of light emitting element arrays are easily aligned with each other at high accuracy. Each of...
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6052136 |
Color image forming apparatus and method for manufacturing recording head used in color image forming apparatus
The present invention provides a color image forming apparatus comprising a plurality of color recording heads each having a plurality of recording chips for effecting the recording in response to...
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6041204 |
Color image forming apparatus with an organic photoconductor
In a color image forming apparatus provided with a photoreceptor having a rotatable peripheral surface; plural sets of a charging device, an imagewise exposure device, and a developing device, each...
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6037964 |
Exposure head and printer
An exposure head wherein a light-shielding panel having enclosing openings capable of receiving individual LED chips, and a front surface panel having small openings are disposed at a front surface...
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6011575 |
Image forming apparatus with line-shaped image exposure means
In an image forming apparatus, an image is formed pixel by pixel for each image data on a photoreceptor, wherein each pixel has a maximum recording width. A plurality of light emitting elements are...
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5946017 |
Single pass electrophotographic color printing
An improved method of electrophotographic color printing in which only a single pass of a drum or belt is needed for formation and transfer of the toner image onto a desired medium by utilizing a...
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5933682 |
Copier/printer with manual adjustment for cross-track uniformity
An electrostatographic reproduction method and apparatus includes an electrostatic recording member moving in a process direction. A plurality of recording elements on a writer imagewise expose the...
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5896472 |
Image forming apparatus
An image forming apparatus includes a moving member for conveying a recording member on which an image is to be formed, image forming units for forming marks for detection of a position of the...
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5889545 |
Method and apparatus for image registration in a single pass ROS printer using a rotatable output window with no optical power
A single pass ROS system provides a plurality of latent images which may subsequently be developed in different colors. The ROS units are initially aligned so that each color image is precisely...
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5821971 |
Image registration for a raster output scanner (ROS) color printer
The present invention is directed to a precise method of registering a plurality of ROS imagers, so as to form sequential registered images on a photoreceptor belt in a single pass. Pairs of belt...
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5790928 |
Switchable dual wavelength flood lamp for simplified color printing architecture based on xerocolography
Full color, two-pass imaging process using black, magenta, cyan and yellow toners and Non-Interactive Development (NID) without fringe field development. A switchable wavelength flood lamp...
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5751327 |
Printer including temperature controlled LED recording heads
An electrophotographic printer includes a plurality of recording heads connected in series in a closed cooling circuit. Each of the recording heads includes a linear array of light-emitting diodes...
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5708934 |
Color image forming apparatus with well-registrated imagewise exposure means
A color image forming apparatus such as a copier or a printer for forming a multicolor toner image. The apparatus includes: a photoreceptor for holding the multicolor toner image; a charger for...
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5663787 |
Electrophotographic color image forming apparatus with image exposure means inside of photoreceptor drum
A color image forming apparatus wherein an image forming body has a inner surface and a outer surface, a charging device electrically charges the outer surface, and an exposure device imagewise...
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5652644 |
Color image processing apparatus which performs color correction in accordance with input color data
A color image processing apparatus includes a plurality of image reading units, each of which reads an original image and produces a color image signal, a color image recording unit which records a...
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5638109 |
Method of recording image with laser beam
Corrected recording data for a present pixel are generated from recording data stored in an image memory based on recording data for pixels preceding, following, above, and beneath the present...
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5600408 |
Electrophotographic color image forming apparatus provided with a plurality of image exposing devices
A color image forming apparatus includes a controller to control an image carrier, plural chargers, plural image exposing devices, plural developing devices so that plural color toner images are...
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5557377 |
Single pass, in-line color electrophotographic printer with interspersed erase device
A single pass EP color printer includes a photoreceptor web having multiple layers and including a charge transport layer and a charge generation layer. Four exposure devices (e.g. either...
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5488399 |
Belt driving apparatus and image recording apparatus using the same
A belt driving apparatus for carrying material to be recorded to a plurality of image recording units. In the belt driving apparatus, the distance of movement of material to be recorded...
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5473421 |
Multicolor image forming apparatus for forming a multicolor image on a transfer material
A multicolor image forming apparatus for forming a multicolor image on a transfer material includes a mechanism, in which when forming a plurality of color toner images on a single...
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5444463 |
Color xerographic printing system with dual wavelength, single optical system ROS and dual layer photoreceptor
A single pass color xerographic printing system with a single polygon, single optical system Raster Output Scanning (ROS) system has a dual wavelength laser diode source for the ROS which images...
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5442388 |
Method and means for correcting lateral registration errors
A method and means for compensating for lateral registration errors in printing machines of the type having a plurality of image processing stations for forming a composite image on an imageable...
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5438437 |
Image forming apparatus with exposure, size, and position correction for pixels
An electrophotographic color image forming machine registers which a second color toner image on a first color toner image which has been previously formed on an image carrier to form a color...
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5412409 |
Image registration for a raster output scanner (ROS) color printer
The present invention is directed to a precise method of registering a plurality of ROS imagers, so as to form sequential registered images on a photoreceptor belt in a single pass. Pairs of belt...
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