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Match Document Document Title
8106931 Semiconductor device, print head and image forming apparatus  
A semiconductor device, a print head comprising the semiconductor device and an image forming apparatus comprising the print head are supplied which are able to reduce cost through miniaturizing...
7923970 Charge controlling circuit  
A charge controlling circuit controls charging of a lithium-ion rechargeable battery. An electric power supplied from an external charger to the lithium-ion rechargeable battery is taken by a...
7791630 Method of adjusting an exposure device for an electrophotographic printer and exposure device  
A method of adjusting an exposure device suited for an electrophotographic printer, the exposure device includes a plurality of light-emitting elements. The method includes the steps of energizing...
7663653 Optical head and image forming apparatus incorporating the same  
An optical head is adapted to form an electrostatic latent image on an image carrier. A transparent substrate has a first face adapted to oppose the image carrier and a second face opposing the...
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,...
7436416 Color printer and control method thereof with pulse width modulation for tone control based on type of document and number of colors printed  
A color printing apparatus having pulse-width modulation means which performs pulse-width modulation for tone control, and a control method thereof are provided. Based on determination of a...
6867795 Optical array with improved contact structure  
A high density array of light emitting diodes for visual display and imaging purposes. The array is mounted on a thermally and electrically conducting medium such as an aluminum block. The block,...
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...
6810799 Printing machine with adjusting device for synchronizing the photoconductor and feed guides by means of a master-slave controller  
A printing machine with an electrophotographic device, having a photoconductor, a photoconductor drive and an illumination device. The electrophotographic unit can be provided with the substrate by...
6618078 Digital camera capable of printing captured images in various sizes  
A method and apparatus for capturing and printing an image of a subject utilizes a tracking mechanism to allow an operator to print the captured image onto a selected surface by manually...
6169559 Hi-lite color ROS scan uniformity self correction architecture  
A highlight raster output scanner is disclosed which utilizes an amplitude modulation with its reference level being placed at its white level. Having the reference level at the white level...
6122468 Method and apparatus for forming toner images  
In an electrophotographic image forming apparatus, a photoconductive element includes a photoconductive film having a thickness of 15 μm or below. A light beam having a diameter of 50 μm or below o...
6025857 Photosensitive member and electrostatic information recording method  
A photosensitive member which has an electrode provided on the front side and a photoconductive layer stacked on the electrode, the photosensitive member being disposed face-to-face with an...
5835814 Electrophotographic method and apparatus for forming color images, and exposure unit therefor  
Full color images are formed by electrophotography which utilizes a rotary member having an endless photosensitive surface which has a plurality of different band regions divided in a direction...
5825398 Image forming apparatus using a synchronized transfer medium driver  
An image forming apparatus has an image scanner, a sensor for determining that the image sensor has scanned the front edge of a document, and a controller using main scanning line synchronizing...
5821970 Color image forming apparatus  
In a color image forming apparatus, a plurality of color images of component colors are combined to form a full color image. These images of the component colors are overlapped on an intermediate...
5729268 Printing apparatus and method of controlling the same  
A printing apparatus for superposing and recording images of respective recording color components constituting one page on a predetermined recording medium to form a color image includes an...
5546110 Electrographic printing  
This invention provides a process for electrographically imaging a plurality of substrates heretofore not usable in such a system. While prior art dielectric substrates could be used in the present...
5541634 Color printer with shiftable laser unit  
A color printer includes a single laser scanning unit which is controlled to emit a scanning laser in accordance with color image data on each of a plurality of separated colors to be printed. A...
5541736 Color image forming system which conducts charging exposure and development with respect to a photosensitive medium at a plurality of times  
A color-image forming apparatus includes: an electrostatic latent image holder; electrostatic latent image forming unit for forming a plurality of electrostatic latent images on the image holder; a...
5532812 Apparatus for forming a copy of an original image on a sheet of paper  
An image forming apparatus includes a plurality of image forming units each having a photoconductive drum for forming a latent image and a developing device for developing the latent image, for...
5467167 Imaging device  
Disclosed is an imaging device which uses a recording paper composed of a base paper exhibiting a color and a photoconductlvely-color-changing layer formed thereon and includes an optical system...
5432611 Image forming apparatus with sub-pixel position control  
In an apparatus for forming an electrostatic latent image in a form of dot for each pixel on a photoreceptor, each pixel has plural color component signals and a dot is formed for each of color...
5373313 Color xerographic printing system with multiple wavelength, single optical system ROS and multiple layer photoreceptor  
A single pass color xerographic printing system with a single polygon, single optical system Raster Output Scanning (ROS) system has a multiple wavelength laser diode source for the ROS which...
5365258 Color image forming apparatus with plural photoconductor drums  
A color image forming apparatus with plural photoconductor drums has a plurality of color image forming arrangements, each arrangement includes an image signal processor for processing an image...
5361089 Method and apparatus for applying an adhesive layer for improved image transfer in electrophotography  
An imaging system incorporating the invention includes a movable photoconductive surface, and an electrostatic system for repetitively charging the photoconductive surface to a first charge...
5351115 Color electrophotographic method and apparatus employed therefor  
A color electrophotographic apparatus employing a plurality of image forming units each including a photoreceptor and a corona charger, and using toner. In the apparatus, the image forming units...
5343233 Image reproducing system having means for generating a pattern signal including a plurality of memories  
An image forming system includes a generator for generating a pattern signal with a plurality of tonality levels. An image forming apparatus is movable in relation to an image forming medium, and...
5341165 Scanning controller for color electrophotographic apparatus  
A color electrophotographic apparatus includes a photosensitive member movable along an endless path; a charger for charging the photosensitive member; a scanning optical system for scanning the...
5327209 Color image forming apparatus  
A color image forming apparatus for automatically setting an image forming condition includes an electrophotographic photosensitive member movable along an endless path; an electrostatic latent...
5327339 Image forming method  
There is provided an image forming method, including: gradation-processing an image signal based on a halftone image to output a pulse-width-modulated signal; forming a latent image on a latent...
5321438 Method and apparatus for color printing  
A print bar color printing system wherein exposure occurs through previously deposited color toner is compensated for light absorption in the previously deposited toner by selectively increasing...
5319433 Electrophotographing apparatus for forming color image  
The present invention provides an electrophotographing apparatus for forming a color image of an improved image quality. For the provision of such an apparatus, a plurality of color developing...
5305023 Multicolor printing apparatus  
In a multicolor printing apparatus in which a laser beam is scanned by a rotary polygon mirror to form an electrostatic latent image on a photosensitive medium, multicolor printing is effected by...
5300962 Compound optics for a raster output scanner in an electrophotographic printer  
A raster output scanner system for multi-color printing provides a plurality of independently-controllable, substantially parallel writing beams. A rotating polygon causes the writing beams to scan...
5295006 Optical exposure system for color video printer with light source moving along rod behind three color liquid crystal panels  
An exposure system for a color video printer capable of obtaining a uniform exposing to liquid crystal display panels for red, green and blue colors by common use of a light source being movably...
5285221 Color image electrophotographic apparatus having photosensitive body and intermediate transfer body  
An outer peripheral length of an intermediate transfer drum of a color laser beam printer is constituted in which a number of a beam detection signal obtained by one rotation of the transfer drum...
5270827 Optical recording system for controlling recording light quantity based on pixel patterns in an image  
An optical recording system is disclosed in which input pixels are recorded by controlling the quantity of light as a medium based on the input pixels. The information on the pixels surrounding at...
5260799 Pulsed imaging, pulse width modulation scanner for a tri-level highlight color imaging system  
A pulsed imaging, facet tracked, Raster Output Scanner utilizes pulse width modulation in conjunction with spatial filtering to form three exposure levels at the surface of a charged photoreceptor...
5252995 Color boundary enhancement in a multi-color electrostatic printer  
A multi-color, electrostatic, laser printing system employs a method for enhancing color representations at boundaries of pixels with different colors. The system employs a charged electrostatic...
5252182 Method for manufacturing thermal recording device  
A method for processing a wiring fraction of on a heat-generating resistance of a thermal recording device, having different thicknesses at different regions are using a masking process or a dual...
5235392 Reproduction apparatus having image transfer velocity matching means  
A reproduction apparatus that has an image-bearing member and an image transfer member includes a first drive assembly for driving the image-bearing member at a desired process velocity V1, and a...
5233402 Color image forming apparatus with improved color image registration  
The color image forming machine such like a color printer or a color copier for forming a color image on a recording sheet. The image forming machine includes a photoreceptor belt; a belt driver...
5223906 Four color toner single pass color printing system using two tri-level xerographic units  
A four color toner single pass color printing system consists generally of a raster output scanner (ROS) optical system and two tri-level xerographic units in tandem. Only two of the three...
5216466 Electrophotographic recording apparatus and system including a dielectric belt and transfer and fixing means  
In the improved electrophotographic recording apparatus, exposure is performed on a photoreceptor drum 7 in response to a signal from an optical head 13 provided in the vicinity of the drum 7, a...
5212532 Electrophotographic color printer using grit wheels for imparting linear motion to the printed media  
A color printer and method of operation wherein a plurality of color toners located within a fixed position carousel are transferred to the surface of a photoconductive drum. The media on which a...
5179395 Multi-mode image forming apparatus  
Copying apparatus operable in two-color mode using two developing devices. The copy operation in the two-color mode forms an electrostatic latent image on a photosensitive member by means of...
5175570 Color image forming apparatus having an adjustor which corrects the position of a latent image according to registration marks  
A color image forming apparatus in which at least one registration mark is formed on a movable image retainer, and exposed by an exposing device. A position of the registration mark is detected by...
5159357 Non-impact printer for recording in color  
In a multi-color electrophotographic reproduction apparatus employing a non-impact electro-optic exposure source, good color balance is obtained by changing the exposure intensity of the recording...
5151717 Imaging method and apparatus using discrete receiving sheets  
A variety of sizes of prints are made electrophotographically utilizing a single large size receiving sheet, for example, a receiving sheet that is 12×18 inches. The receiving sheet is large ...
Matches 1 - 50 out of 106 1 2 3 >