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7375853 |
Image processing apparatus and method
A separating unit determines, for an image data, whether there exists black data, and generates density data from the black data when the black data exists, and generates color data from data other...
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7251445 |
Image formation device and image forming method using same
An image forming apparatus is provided with a latent image carrier for holding an electrostatic latent image, and an intermediate transfer member for temporally holding an image formed by...
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7233749 |
Image forming device for performing calibration by patch pattern
An image forming device, has an image carrier on which a latent image is formed, and a development device to which a plurality of development units for containing developer with the same color are...
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6724410 |
Multicolor image forming apparatus having a controller for controlling press-contact and separation of an image forming member
A multicolor image forming apparatus comprises a first image forming unit, and a second image forming unit, having respectively an image forming member, an intermediate transfer member, and a...
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6421522 |
Method and apparatus for setting registration in a multicolor printing machine based on a change in toner profile
A method and apparatus for setting registration in a multicolor printing machine having a number of exposure devices for the digital production of color separations, the actions of setting up and...
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6352806 |
Low toner pile height color image reproduction machine
A low toner pile height color image reproduction machine is disclosed for forming full-gamut toner images approximating a “look and feel” of offset lithographic images. The reproduction machine...
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6336019 |
Surface position and velocity measurement for photoreceptor belt
Systems and methods are provided that improve the registration between the color separation images. The systems and methods control the output of the image data for one or more of the color...
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6266122 |
Liquid crystal display device and method for manufacturing the same
A liquid crystal display device of the present invention includes: a first substrate and a second substrate; and a liquid crystal layer interposed between the first substrate and the second...
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6205311 |
Method of multicolor electrophotographic printing with unipolar toner
A method for multicolor electrophotographic printing includes a photoconductive layer system having surface elements or surface regions that are provided with an initial negative potential, then...
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6144817 |
Image forming apparatus utilizing intermediate transfer member
An image forming apparatus includes a photosensitive member, charging means, exposure means, developing means, and an image holding member, where the exposure means is adapted, in exposing the...
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6094551 |
Multicolor image formation apparatus and multicolor image formation method for controlling timing for forming a color toner image on a photoconductor
In the formation of a multicolor image for generating a color print by repeating operation for transferring on an intermediate transfer member every color after one color toner image is formed on a...
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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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6022653 |
Color image recording system and method to prevent color displacement through red light beam detection
In a color image recording system, a color image is recorded on a photosensitive material by causing red, green and blue light beams modulated according to a color image signal to scan the...
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6009296 |
Multicolor image formation device
The object of the present invention is to obtain a multicolor image formation device wherein the defect of an image caused in switching developing machines and others can be prevented. A yellow...
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5983057 |
Color imaging system with selectively openable optical shutter
In the information recording an reproducing method and apparatus according to the present invention, a piece of picture image information is recorded as an analog quantity or a digital quantity an...
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5983045 |
Image forming apparatus for forming plural toner images on photosensitive member and for transferring toner images onto transfer material collectively
The present invention aims to improve image quality in an image forming apparatus in which plural color toner images are formed on a photosensitive member and the toner images are collectively...
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5978628 |
Highlight color read printing using additive toners
REaD electrophotographic printing using additive color toners. Toners that are non-transmissive to exposing light are developed using inhibited image-on-image printing. Then, the photoreceptor is...
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5916718 |
Method and apparatus for producing a multi-colored image in an electrophotographic system
Apparatus and method in which a multi-color image, such as a standard four color image, is assembled on a medium, such as paper or film. Liquid ink contains conventional "solid" colored toner...
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5774760 |
Method of controlling color correction and apparatus for imagewise exposure using said method
The improved method of color correction control is capable of assuring the desired amounts of color correction at all times, thereby reproducing a high-quality image of good color balance even from...
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5773818 |
Digital scanning system having drop-out capabilities and a color drop-out filter therefor
A monochromatic scanning system includes an illumination system, a document staging system, an optical lens system, a photosensing system to convert light to electrical signals and a color drop-out...
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5716744 |
Dual beam color electrophotographic apparatus
An electrophotographic printer produces a multi-color image on a moving photoconductor (OPC) and includes a laser/scanner arrangement for producing first and second beams to expose the OPC at...
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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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5659855 |
Electrophotographic image member with magnetic property and image forming apparatus
An image forming apparatus uses an endless belt image member having a magnetic strip along one or more edges. A linear printhead is flashed in response to a magnetic encoder signal in the magnetic...
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5649269 |
Image recording apparatus having a mask member moving together with an exposure unit
An image recording apparatus is designed to decrease the size of an exposure unit, thereby allowing the exposure unit to move within a narrow space between an original document and a photosensitive...
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5640652 |
Driving mechanism for color image forming apparatus
A color image forming apparatus includes a plurality of chargers each provided in a periphery of an image forming body for charging the image forming body; at least two of a plurality of imagewise...
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5604578 |
Color image forming apparatus having a function of determining a charge value charged on a customer according to an amount of recording material
An image forming apparatus includes a reading section for fetching first color image data subjected to color separation, a circuit for converting the first color image data into second color image...
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5585912 |
Image forming apparatus with movable mirrors along two optical paths to expose an image onto a selected photosensitive drum
An image forming apparatus includes a plurality of image forming units, each unit developing a latent image formed on a respective photosensitive drum with a respective color toner to form an image...
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5570194 |
Color image forming apparatus in which pre-transfer image exposure is performed on full color toner image on photoreceptor after fourth color toner image of Y,M,C, and BK color toner images is formed but before transferring full color toner image
An apparatus for forming Y, M, C, and BK color toner images, includes a controller to control an exposure device to conduct a pre-transfer image exposure on the color toner images on the...
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5570174 |
Two-pass highlight color copier employing CAD scavengeless development & strong development potentials
A two-pass light/lens highlight color copier in which high contrast images are created providing relatively large development fields or potentials compared to those associated with tri-level...
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5559585 |
Image forming apparatus adapted for reflection-type or transmission-type originals
The improved color image forming apparatus is adapted for image formation from either a reflection-type original or a transmission-type original by the user who selects the proper exposure optics...
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5550626 |
Image forming device for creating a color image having pixel elements of different thicknesses
An electrophotographic color printer exposes a photosensitive body to form an exposure pattern thereon. Toner material of two different colors is then applied to the exposure pattern by developers....
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5541721 |
System for controlling electrostatic voltmeters in a tri-level highlight color xerographic printer
In a xerographic printer for tri-level highlight color imaging, two electrostatic voltmeters (ESVs) are used to interpolate the electrostatic potential at a particular location along the path of...
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5541708 |
System for testing and optimizing toner output in an image formating apparatus
An image density controlling device for an image formation apparatus includes a plurality of image formation devices. A plurality of transfer members carry an image formed by at least one of the...
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5495348 |
Image processing apparatus and method using analog and digital recording systems and correcting a boundary between color images respectively formed
The present invention relates to an image processing apparatus and a method of forming an image by separating color information into two or more color information items. The boundary of images is...
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5321487 |
Color correction structure for color imaging device
A color correction structure for a color imaging device in which a document is scanned in a predetermined direction by a slit exposure light. A light reflected on the document is lead to a...
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5309182 |
Bicolor image forming apparatus for forming a bicolor image on a photoconductive element
A bicolor image forming apparatus having first and second exposing means and first and second developing means arranged around a photoconductive element. The first and second developing means are...
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5301039 |
Image processing apparatus with pixel tone discrimination
An image processing apparatus has elements for inputting pixel data and for processing the input pixel data. The processing element includes a device for quantizing the input pixel data to produce...
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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...
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5278625 |
Method and apparatus for lateral registration of sequential images in a singles pass, multi-LED print bar printer
An image bar recording system, which, in a preferred embodiment, utilizes a plurality of LED image bars, forms a plurality of latent images, which may subsequently be developed in different colors....
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5278586 |
Image forming apparatus with automatic multiple image alignment
An image forming apparatus having a rotatable image carrier, a first exposing device for forming an electrostatic latent image by irradiating an optical beam according to image data to the image...
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5262832 |
Color separation optical system for use in color copying machine
A color separation system for use in a color copying apparatus including blue, green and red reflection filters as well as blue and green transmission filters. The blue and green transmission...
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5257037 |
Compact image forming apparatus with color position adjustment
Color image forming apparatus includes a belt-shaped image carrier stretched and conveyed around rotating rollers on which image exposure is conducted by a plurality of exposure units; and a...
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5253031 |
Method of forming a reference pattern for adjusting image density in copying machines
A copying machine capable of color copying includes a filter apparatus for color-separating scanning light for scanning original images, and the original images are copied by electrophotographic...
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5237425 |
Ink compiler for a two color printer
A compiler for producing a catalog of colors for a printing system using two colorants, black plus a highlight color. The compiler executes the color programming language and constructs one or more...
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5229787 |
Color printer
The present invention relates to a color printer which forms multiple latent images on the surface of a belt type photoreceptor in a single pass. The invention enables the placement of imaging...
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5206101 |
Method of and apparatus for forming a multi-color image
A method and apparatus for forming a multi-color image in which colored toner powder is used to form color separation images in the secondary colors magenta, cyan and yellow and also in one of the...
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5194351 |
Single pass digital xerographic process color reproduction
Xerographic method and apparatus capable of achieving a very large gamut of colors using the tri-level, highlight color process. Tri-level images are formed within pixel distance of a prior...
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5192958 |
Method and apparatus to control overall write length in LED print bars
Overall length of LED print bars arranged in a single pass printing system is controlled by controlling the operating temperature of the LED arrays forming the light emitting portion of the print...
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5187521 |
Multicolor image forming apparatus with color component discrimination function
An image forming apparatus having an exposure unit for exposing an original; a first image forming unit for forming an image on a recording medium by removing an image of first color component(s)...
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5162899 |
Color data correction apparatus ultilizing neural network
A color correction apparatus for use in an apparatus such as a color copier for operating on data obtained by scanning and color analysis of a source image to obtain color density data for use in...
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