Patents Assigned to Xerox
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Patent number: 6721518Abstract: The part of a halogen heater 90 corresponding to the position of a temperature sensing member 110 is positioned at a part where the temperature gradient of light distribution ripple 120 along the length direction of the halogen heater 90 is moderate (a top 122 or a bottom 124).Type: GrantFiled: November 19, 2001Date of Patent: April 13, 2004Assignee: Fuji Xerox Co., Ltd.Inventors: Hideo Oshida, Yasuki Tanaka, Keiji Sanekata, Hitoshi Nanba
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Patent number: 6718859Abstract: A three hole punch system for use in an image capturing device. The three hole punch system uses elastomer rollers that punch holes in the edge of a document as is passes between the two rollers. If desired the rollers can act as a transport for the document without punching holes in the document. After the holes are punched the slugs are pushed back into the holes and the document is retrieved by the operator.Type: GrantFiled: February 1, 2000Date of Patent: April 13, 2004Assignee: Xerox CorporationInventors: James J. Reid, Lynn S. Gill
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Patent number: 6720055Abstract: A label sheet for electrophotography, constituted of a label base member and a separator base member both made of resin film, and an image forming method with use thereof. Difference of thermal shrinkage rates in an MD direction between the label body and the separator of the label sheet after heat treatment for 5 minutes at 150° C. is in the range of −0.3% to 0.1%. Stiffness E·t3, a function of a tensile elasticity rate E (N/mm2) of the separator at 135° C. and thickness t (mm) of the separator at 23° C, 50% R.H., is 0.21 N·mm or more. Occurrences of winding around a fuser and marks of winding are suppressed, curls are small, and toner cracks do not appear even if printed matter is left in conditions of high temperature and high humidity.Type: GrantFiled: March 6, 2002Date of Patent: April 13, 2004Assignee: Fuji Xerox Co., Ltd.Inventors: Takashi Ogino, Kiyoshi Hosoi
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Patent number: 6721531Abstract: Flash fixing equipment for fixing a toner image onto a medium by means of flashlight is to reduce non-uniformity of halftone image print density. Flash fixing unit has flash energy distribution consisting of a center zone and front/end zones. The flash frequency of the flash lamp is controlled so that the toner fixing start energy being subtracted from the added value of flash energies of front and end zones becomes substantially equal to the flash energy value on the center zone. The energy distribution exceeding the fixing start energy which affects print density (size of toner-overflowed area) is controlled to have a flat characteristic to reduce non-uniformity of print density.Type: GrantFiled: April 10, 2002Date of Patent: April 13, 2004Assignee: Fuji Xerox Co., Ltd.Inventors: Teruki Kishimoto, Akira Iwaishi, Tomakazu Akuta
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Patent number: 6719391Abstract: Of a band border portion which is an area where a black stripe might occur, in an area near a band border portion adjacent to an unrecorded area, recording density is reduced only when the recording density is high. Since recording density in any unnecessary area is not reduced, no white stripe is produced, either. It is therefore possible to obtain an image having no banding.Type: GrantFiled: August 27, 2002Date of Patent: April 13, 2004Assignee: Fuji Xerox Co., Ltd.Inventor: Ryuichi Kojima
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Patent number: 6720594Abstract: Improved pixel circuits are disclosed for high fill-factor large area imager systems using continuous (e.g., amorphous silicon) sensor layers. A first approach prevents crosstalk by ensuring that each pixel is not able to go into saturation. A second approach employs a cascode transistor to maintain the bias of the sensor contact at a constant potential regardless of illumination condition. These two approaches may be combined. A resistive film connecting the pixel contacts may be used in conjunction with the second approach to prevent aliasing of signal and noise.Type: GrantFiled: January 7, 2002Date of Patent: April 13, 2004Assignee: Xerox CorporationInventors: Jeffrey T. Rahn, Koenraad F. Van Schuylenbergh, Jeng Ping Lu
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Patent number: 6719419Abstract: A solid ink feed system for a phase change printer includes a solid ink feed channel that has formed in it a feed channel key that either blocks a solid ink stick from complete insertion into the feed channel, or blocks passage of an ink stick along the length of the feed channel, unless the ink stick has a key element corresponding to the feed channel key. A solid ink stick is formed of a three dimensional ink stick body with a key element that extends along a surface of the ink stick body through the rear of the ink stick body.Type: GrantFiled: April 29, 2002Date of Patent: April 13, 2004Assignee: Xerox CorporationInventors: Brent R. Jones, Frederick T. Mattern, Timothy L. Crawford
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Patent number: 6720973Abstract: A method for transforming color gamut from a first color space to a second color space, includes dividing the first color space into a first plurality of regions in an objective space; dividing a subset of the second color space into a second plurality of regions in the objective space; mapping a first region of said first plurality into a first region of said second plurality substantially without change; mapping a second region of said first plurality comprising an upper gamut of the first color space into a complementary second region of said second plurality; and mapping a third region of said first plurality comprising a lower gamut of the first color space with a gamma correction into a complementary third region of said second plurality.Type: GrantFiled: February 26, 2002Date of Patent: April 13, 2004Assignee: Xerox CorporationInventor: David P. Butler
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Patent number: 6720119Abstract: A method of fabricating a color filter with a small number of processes and at low cost is provided, for which a transparent conductive film for liquid crystal driving need not be formed, a voltage drop during liquid crystal driving is restrained, and a black matrix is easily formed; an apparatus for fabricating the color filter; the color filter; and a liquid crystal display apparatus.Type: GrantFiled: June 14, 2001Date of Patent: April 13, 2004Assignee: Fuji Xerox Co., Ltd.Inventors: Shigemi Ohtsu, Yoshinori Yamaguchi, Keishi Shimizu, Eiichi Akutsu
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Patent number: 6719413Abstract: A solid ink loader for feeding colored solid ink sticks in a phase change ink jet printer, wherein the feed system includes at least one feed channel for receiving ink sticks having a first ink stick color, at least one key plate for the at least one feed channel, wherein the at least one key plate has a first insertion opening for admitting the ink sticks having the first color into the at least one feed channel, and wherein the at least one key plate has first ink stick color identification markings corresponding to the first ink stick color.Type: GrantFiled: May 30, 2002Date of Patent: April 13, 2004Assignee: Xerox CorporationInventor: Brent R. Jones
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Patent number: 6721063Abstract: An image rendering system and method use a sum-and-difference error diffusion technique that may be utilized in conjunction with image rendering using more than three colorants, e.g., inks. The colorants may be arbitrary and/or redundant. The sum-and-difference error diffusion technique involves two sets of steps. First, steps for performing specification of a colorant amount are separated from steps for determining colorant placement. Colorant placement is then performed by first summing the total number of colorant requests, including any associated error adjustments, and determining how many units of colorant will be rendered. Second, the adjusted colorant requests are sorted to fulfill the image rendering.Type: GrantFiled: January 19, 2000Date of Patent: April 13, 2004Assignee: Xerox CorporationInventor: Steven J. Harrington
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Patent number: 6718878Abstract: An approach is provided for identifying black and white pages in a color document stream. This approach may be utilized in digital printing systems. This approach examines a small portion of the color data for a page to identify whether the color data is indicative of the page being a black and white page or a full color page. This approach also examines the relative sizes of compressed color separations for the pages. Pages that are determined to be black and white pages may be printed in a black and white mode, whereas full color pages may be printed in a full color page mode.Type: GrantFiled: September 29, 1999Date of Patent: April 13, 2004Assignee: Xerox CorporationInventors: Marc Raymond Grosso, Craig D. Woodward
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Publication number: 20040066522Abstract: A secrecy management information recording device has an information input section which inputs image information printed by a printer and secrecy management information corresponding to the image information, a transport mechanism which receives a printing sheet on which the image information has been printed by the printer, and discharges the sheet after passage over a heat generating resistor, and a magnetic tag forming section which controls generation of heat by the heat generating resistor according to content of the secrecy management information corresponding to the image information printed on the transported printing sheet to thermally transfer at least one magnetic member contained in a thermal transfer sheet onto the printing sheet. A magnetic tag representing the content of the secrecy management information is thereby formed on the printing sheet.Type: ApplicationFiled: March 3, 2003Publication date: April 8, 2004Applicant: FUJI XEROX CO., LTD.Inventors: Shoji Yamaguchi, Mario Fuse, Tetsuya Kimura
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Publication number: 20040067072Abstract: Two temperature areas are set at a higher temperature side and at a lower temperature side of target temperature respectively. The power stage of the temperature areas at the higher temperature side is set to −1 and the power stage of the temperature areas at the lower temperature side is set to +1. Thus, a current value is varied little and generation of flicker can be reduced. Further, A temperature can be always converged into the target temperature. When a temperature is in a temperature area near to the target temperature, the power stage is maintained except for a case in which a temperature has passed through a temperature area other than this near temperature area and the target temperature area and enters this near temperature area for the first time. Thus, an amplitude of power can be suppressed.Type: ApplicationFiled: March 17, 2003Publication date: April 8, 2004Applicant: Fuji Xerox Co., Ltd.Inventors: Yukio Suzuki, Teruo Kaneko, Naoki Honma, Kunihiro Maie, Kouji Tsutsumi
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Publication number: 20040066529Abstract: A device for printing a document, such as an HTML document, in which data to be incorporated into an output image can be described in the form of reference to an outside source, the device being capable of smooth printing a large document using a small memory. A document structural information manager creates document structural information which describes a structure of document elements, based on a result of analysis on an HTML document carried out by a document analyzer. During asynchronous downloading of substantial data of each document element, should work memory shortage occur, a memory manager unloads substantial data of a document element with a latter order at which to be incorporated into an output among those in the work memory, and saves the unloaded substantial data in an HDD. Thereafter, when data becomes no longer necessary as a result of being printed, the memory manager deletes the data from the work memory and reloads data saved in the HDD back to the work memory.Type: ApplicationFiled: February 25, 2003Publication date: April 8, 2004Applicant: Fuji Xerox Co., Ltd.Inventors: Qingsu Wu, Masayoshi Sakakibara, Masatoshi Tagawa
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Publication number: 20040066530Abstract: An image forming device for printing a page which incorporates content data acquired from a reference destination, capable of starting printing earlier. A display analyzing section (33) analyzes a printing document and lays out a document element for tentative page dividing. In the laying out, for a document element whose content data needs to be acquired from a reference destination, a tentative size is used and, for a document element having content data of a known rendering size, the rendering size is used. A document manager (45) monitors a state of acquisition of the content data and instructs a rendering section (34), upon detection of completion of acquisition of content data to be laid out on a first page, to render the image of the page.Type: ApplicationFiled: March 3, 2003Publication date: April 8, 2004Applicant: FUJI XEROX CO., LTD.Inventors: Qingsu Wu, Masatoshi Tagawa, Masayoshi Sakakibara
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Publication number: 20040067082Abstract: Provided is a fixing device and a fixing method, and an image forming apparatus using the fixing device, in which at least heat is applied to an unfixed toner image formed on a recording material to soften or melt toner of the unfixed toner image into a state of being able to be deformed by an external force, and while maintained in the state of being able to be deformed by the external force, the toner is pressed in a nonheating manner to be flowed. Accordingly, device structure can be simplified to be free of wasteful energy consumption, an image of image quality excellent in transparency of a toner image and in OHP permeability as well as of high glossiness which is free from gloss nonuniformity can be obtained while preventing curling of a recording material.Type: ApplicationFiled: September 23, 2003Publication date: April 8, 2004Applicant: Fuji Xerox Co., Ltd.Inventors: Yasuhiro Uehara, Motofumi Baba
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Publication number: 20040068698Abstract: An image forming device for dividing a continuous document without the concept of pages, such as an HTML document, into pages, the device being capable of responding to a user's various needs in connection with page dividing. A page dividing processor (304) is provided with a plurality of page dividing algorithms which differ in terms of treatment of a document element placed across a page boundary. When a user inputs a page dividing policy using a user interface (301), a dividing algorithm designating section (305) specifies a page dividing algorithm corresponding to the policy, and notifies the page dividing processor (304) of the algorithm. The page dividing processor (304) divides an HTML document into pages according to the algorithm.Type: ApplicationFiled: February 27, 2003Publication date: April 8, 2004Applicant: FUJI XEROX CO., LTD.Inventors: Qingsu Wu, Masayoshi Sakakibara, Masatoshi Tagawa
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Publication number: 20040067024Abstract: An optical distributor includes an optical-signal input port, a light receiving device, a light emitting device, a light splitter, and optical signal output ports. The light receiving device converts an optical light signal input to the optical-signal input port into an electric signal. The light emitting device converts the electric signal into an optical signal. The optical splitter 14 splits the converted optical signal into two optical signals. The optical-signal output ports output the split optical signals. The light receiving device includes a light receiving element, a pre-amplifier, and a limiting amplifier. The light emitting device includes a light-source drive element and a light emitting element.Type: ApplicationFiled: March 25, 2003Publication date: April 8, 2004Applicant: FUJI XEROX CO., LTD.Inventors: Hidenori Yamada, Junji Okada, Osamu Ueno, Shinya Kyozuka, Yoshihide Sato, Masaru Kijima
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Publication number: 20040067079Abstract: In a fuser for xerographic printing, stripper fingers remove the print sheet from a fuser roll. The stripper finger having a tip for stripping a lead edge of a sheet from said fuser roll. A roller assembly, positioned adjacent to said stripper finger; for engaging said lead edge of a sheet and lifting the sheet from further contact with said tip after said tip of said stripper finger strips said lead edge of said sheet from said fuser roll.Type: ApplicationFiled: October 2, 2002Publication date: April 8, 2004Applicant: Xerox CorporationInventors: Youti Kuo, Mark Stevens, Paul M. Fromm