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| Number | Title | Issue Date |
| 7310484 | Apparatus for forming visible black and white or color images and invisible images The image forming apparatus of the present invention includes a cyan color image formation unit which uses a cyan color toner to form a cyan color image; a magenta color image formation unit which uses a magenta color toner to form a magenta color image; a yellow co... | 12/18/2007 |
| 7288357 | Cyan toner and method of producing cyan toner A cyan toner is provided which is brighter and more greenish in hue than conventional cyan toners and highly translucency. A cyan toner characterized by comprising toner particles at least having a coloring compound represented by the Formula (1): ... | 10/30/2007 |
| 7264910 | Cyan toner and method of producing cyan toner A cyan toner is provided which is brighter and more greenish in hue than conventional cyan toners and highly translucency. A cyan toner characterized by comprising toner particles at least having a coloring compound represented by the Formula (1): ... | 09/04/2007 |
| 7046266 | Scanner system A method of scanning for writing a pattern on a surface, including providing a scanning beam comprised of a plurality of independently addressable sub-beams, scanning the surface with the scanning beam a plurality of times, the sub-beams scanning the surface side-by... | 05/16/2006 |
| 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 includes a single moveable endless image bearing member havin... | 03/05/2002 |
| 6194109 | Methods of detecting and correcting color plane mis-registration on an intermediate transfer belt In one aspect, the invention encompasses a method of using an image forming device. A first pattern of toner is provided on a photosensitive drum of the image forming device. The toner is transferred from the photosensitive drum to an intermediate transfe... | 02/27/2001 |
| 6188861 | Tandem tri-level xerographic apparatus and method for producing pictorial color images Apparatus and method for creating quality pictorial color images include a charging device for uniformly charging a photoconductive member of a first tri-level xerographic module to a predetermined voltage level; using a controller and a ROS device for cr... | 02/13/2001 |
| 6020094 | Method and device for forming a duplicate image In a method for forming a duplicate image by reading an original image from an original sheet and forming a duplicate image according to the original image, to allow the designation of a number of regions for forming duplicate regional images, from an ove... | 02/01/2000 |
| 5985499 | Method and apparatus for forming two toner images in a single frame A composite toner image made up of first and second toners is formed on an image member. A first electrostatic image of a first polarity is formed on the image member. That electrostatic image is toned with a first toner of the first polarity. The image m... | 11/16/1999 |
| 5912097 | Electrostatographic method using an overlay toner A method is provided for increasing the release temperature from the fuser in copying and printing processes comprising the steps of forming a toner layer on a receiver with an imagewise overlay toner on top and fixing the layers of toner by contact with ... | 06/15/1999 |
| 5837408 | Xerocolography tandem architectures for high speed color printing Full process color imaging is provided with the use of two xerocolography engines in tandem. Each of the two xerocolography engines is capable of creating three perfectly registered latent images with subsequent development thereof in a spot next to spot ... | 11/17/1998 |
| 5807652 | Process for producing process color in a single pass with three wavelength imager and three layer photoreceptor A process for producing eight distinct colors, (viz. K, C, M, Y, CM, CY, MY and W) in a single pass with a single exposure in a 3λ/3L imaging system is provided. The use of xerocolography with a fifth developer housing containing the same color toner as ... | 09/15/1998 |
| 5795689 | Method of making a printing plate for newspaper printing By increasing the printing-plate-making speed in a laser-direct-drawing-from-computer type plate making system, the plate size can be increased without large-scale expansion of the plate making facilities, and the operation time of the rotary press is the... | 08/18/1998 |
| 5576824 | Five cycle image on image printing architecture A 5 cycle color electrophotographic printing architecture. In the first cycle the photoreceptor is erased, charged, exposed to create a first electrostatic latent representation, and developed with a first color of toner. In the second cycle the photorece... | 11/19/1996 |
| 5572291 | Image forming method, image forming apparatus and transparent film A transparent film for forming, e.g., a toner image thereon is provided as an optically transparent sheet member having an opaque part. During the image forming, the position and conveyance state of the transparent film are detected optically by utilizing... | 11/05/1996 |
| 5519469 | Printing plate using a charge carrier medium A printing plate employs a charge carrier medium and includes a printing area constructed from a toner layer and charge carrier layer on an electrically conductive substrate.... | 05/21/1996 |
| 5485256 | Method and apparatus for forming combined toner images First and second toner images are created on a primary image member. The first toner image is transferred to an intermediate image member and then transferred back to the primary image member to combine the two images. Preferably, the intermediate image m... | 01/16/1996 |
| 5450189 | Electrophotographic imaging with toners of opposite sign electrical charge A system and method for electrophotographic printing an image with a plurality of toners, where the plurality of toners includes toners that are attracted to either a first charge potential or a second charge potential. The electrophotographic system incl... | 09/12/1995 |
| 5414496 | Method for manufacturing a printing plate using a charge carrier medium and method for page make-up using a charge carrier medium A photoconductive layer 5 of a photosensitive material 1 is located in opposition to a charge carrier layer 6 of a charge carrier medium 2, followed by connection to a power source 8. The charge carrier medium 2 is then exposed to light 9 having a given w... | 05/09/1995 |
| 5342715 | Color printer having reduced first copy out time and extended photoreceptor life An apparatus and method is presented for forming multiple color images on separate pitches of a photoreceptor belt and for registering the images and avoiding exposure of said images on the belt seam. In one embodiment, four LED print bars each form a col... | 08/30/1994 |
| 5229190 | Handleable card and method of manufacture A card (10) and a method of manufacturing handleable cards includes providing front and back sheets (44, 46) of thin, flexible, opaque material, depositing images on such sheets by electrophotographic process to affix toner particles (14, 32) on the sheet... | 07/20/1993 |
| 5227265 | Migration imaging system A migration imaging system using a laser-addressable thermoplastic imaging member. The imaging member comprises a supporting section and a thermoplastic imaging surface layer. A charged, uniform layer of marking particles is deposited on the imaging surfa... | 07/13/1993 |
| 5213921 | Electrophotographic color printing process The present invention relates to electrophotographic printing and, in particular, to a process for plural color electrophotographic printing with controlled deposition of each color during the printing process.... | 05/25/1993 |
| 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 primary colors red, green or blue, such that of the color ... | 04/27/1993 |
| 5200791 | Multiple pitch color registration system A multiple pitch color registration system is disclosed for registering two images that are not precisely placed on a photoreceptor in an electrophotographic printing machine. The registration system is able to run asynchronously for a period of time and ... | 04/06/1993 |
| 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 developed image. These images are developed with one of two diffe... | 03/16/1993 |
| 5158846 | Electrostatic color printing system utilizing an image transfer belt An improved color printing method and the apparatus for employing the method are provided for continuously superimposing a plurality of separate color toner images onto a common conductive intermediate transfer belt from a plurality of developing drums ac... | 10/27/1992 |
| 5055365 | Electrostatic proofing of negative color separations An image reversal process for the production of electrophotographic color proofs from negative separation films where the photoconductive recording member is reusable and the proofs are produced on printing stock paper and which very closely match the app... | 10/08/1991 |
| 5010398 | Method for colour correction by dry dot etching using photographically produced mask A method for dot-size correction or modification in half-tone colour separations to be used in the production of printing plates for printing reproductions of coloured originals in which a contact print is overexposed through a photographic mask constitut... | 04/23/1991 |
| 4990969 | Method and apparatus for forming multicolor images A primary imaging member, for example, a photoconductive web is used to form a series of primary toner images. Each toner image in the series is transferred to a separate secondary imaging member. The secondary image members can be drums covered by blank ... | 02/05/1991 |
| 4985322 | Process and apparatus for producing printing plates The process and apparatus for producing printing plates of this invention are for optically color separating a transmitted light or reflection light from a color original (1) and producing color-separated printing plates (18) each having each different co... | 01/15/1991 |
| 4960660 | High resolution superimposed images from photopolymer electrographic master Process for preparation of high resolution image exposing imagewise a photopolymerizable element having a removable cover sheet and a conductive support or a temporary support which is replaced by a conductive support, stripping the cover sheet and lamina... | 10/02/1990 |
| 4884080 | Color image printing apparatus A color image printing apparatus prints one pixel by superposing a predetermined dots of three colors within a 3×3 dot matrix in accordance with a density of the pixel. The positions of the printed dots within the dot matrix are stored as a dot pattern f... | 11/28/1989 |
| 4878063 | Multicolor printing apparatus and method having vernier detection/correction system for adjusting color separation planes Method and apparatus for detecting and correcting misregistration of color separation planes in a multicolor printing process include the functions of: (i) printing on a test sheet, with a first color printing subsystem, a first array of M parallel lines ... | 10/31/1989 |
| 4738911 | Photoreceptor for electrophotography and an image-forming process by the use thereof using color separation filter A photoreceptor having a photoconductive layer, an electrically insulating layer, an electrically conductive layer, and a color separation filter layer. The photoconductive layer comprises a charge generating material layer and a charge transporting mater... | 04/19/1988 |
| 4682880 | Multicolor image recording method and device utilizing a single image transfer to the recording material An electrostatic latent image is formed on a rotatable latent image bearing member and is developed with a developer into a visualized image on the latent image bearing member. The visualized image is transferred by pressure to a rotatable visualized imag... | 07/28/1987 |
| 4660503 | Method and apparatus for improving a multi-color electrophotographic image An improvement in the method and apparatus for producing a multi-color electrophotographic image wherein an electrophotographic medium is mounted on a carrier therefor and is translated over a predetermined path so that the medium is first charged, then e... | 04/28/1987 |
| 4654282 | Plural electrophotographic toned image method The invention provides an electrophotographic method of forming a subsequent toner image overlapping one or more toner images previously formed on a surface of an electrophotographic element. The method comprises the steps of: (a) electrically charging the sur... | 03/31/1987 |
| 4650421 | Representation of color for blind persons The convention is established and made known to a blind person that a first set of substantially parallel first lines oriented on a substrate in a first direction represents a first color, a second set of substantially parallel second lines oriented on th... | 03/17/1987 |
| 4581309 | Electrophotographic color reproduction process A three-color separation electrophotographic color reproduction process which includes primary uniform charge steps, color separation image exposure steps, development steps and transfer steps. The process further includes between each image exposure step... | 04/08/1986 |
