Patents Assigned to Xerox
  • Patent number: 7771908
    Abstract: A photoconductor that includes a first layer, a supporting substrate thereover, a photogenerating layer, and at least one charge transport layer containing at least one charge transport component, and where the first layer is in contact with the supporting substrate on the reverse side thereof, and which first layer is comprised of a fluorinated poly(oxetane) polymer.
    Type: Grant
    Filed: February 19, 2008
    Date of Patent: August 10, 2010
    Assignee: Xerox Corporation
    Inventors: Jin Wu, Lanhui Zhang, Lin Ma
  • Patent number: 7773774
    Abstract: The present invention is directed to a system and method for test target selection in conjunction with dynamic test pattern generation. In the invention, a test pattern page(s) is composed using an optimal set of test targets, which can be accommodated or adjusted to fit within size constraints of the test pattern. The method of the present invention makes use of layout optimization to ensure that related and optimized test targets are accommodated on a single test pattern. For example, it may be preferable to “squeeze in” a smaller-than-normal uniform area target, rather than not to print it at all during a test.
    Type: Grant
    Filed: June 28, 2004
    Date of Patent: August 10, 2010
    Assignee: Xerox Corporation
    Inventors: D. Rene Rasmussen, Meera Sampath, Edul N. Dalal
  • Patent number: 7773254
    Abstract: A method and system reconstructs a contone image from a binary image by first tagging pixels to identify one of a multiplicity of image content types. The tag information and the pattern of bits surrounding the pixel to be converted to a contone value are used to reconstruct a contone image from a binary image. The pattern of bits in the neighborhood is used to generate a unique identifier. The unique identifier is used as the address for a lookup table with the contone value to be used wherein each lookup table corresponds to an image context type.
    Type: Grant
    Filed: November 10, 2005
    Date of Patent: August 10, 2010
    Assignee: Xerox Corporation
    Inventors: Ramesh Nagarajan, Francis Kapo Tse, Chia-Hao Lee, John Christopher Cassidy, John W. Wu
  • Patent number: 7770803
    Abstract: A code pattern image generation apparatus for generating a code pattern image, which includes position-dependent information differing at every position and position-independent information in common at various positions, the code pattern image generation apparatus includes; an image generator that generates a code pattern image by disposing a plurality of position-dependent code images, which include position-dependent information, at a mutually predetermined spacing along at least one side and repeatedly disposing a position-independent code image, which includes position-independent information, in the spacing between the disposed position-dependent code images.
    Type: Grant
    Filed: January 11, 2006
    Date of Patent: August 10, 2010
    Assignee: Fuji Xerox Co., Ltd.
    Inventor: Takeshi Onishi
  • Patent number: 7770884
    Abstract: A method and apparatus for fluff management in an image production device is disclosed. The method may include fluffing a stack of media with a predetermined amount of air flow, sensing sheet separation in the media stack, determining if the sheet separation meets predetermined criteria, wherein if the sheet separation does not meet the predetermined criteria, adjusting the air flow used for fluffing the media stack.
    Type: Grant
    Filed: August 7, 2008
    Date of Patent: August 10, 2010
    Assignee: Xerox Corporation
    Inventors: Robert Alan Clark, Lloyd Williams
  • Patent number: 7770738
    Abstract: A classifying device for classifying particles using a centrifugal force contains a microchannel includes a curved portion including a first tubular channel and a second tubular channel; and a diaphragm that is provided within the curved portion, and that is located at a position between the first tubular channel and the second tubular channel; and wherein the diaphragm has at least a first apertured group formed in a central region of the diaphragm and a second apertured group formed in a first end region and a second end region of the diaphragm, the first apertured group and the second apertured group communicate the first tubular channel with the second tubular channel along a direction of the centrifugal force, the first apertured group has a mesh, and the second apertured group has a mesh that is different in size from the mesh of the first apertured group.
    Type: Grant
    Filed: February 24, 2009
    Date of Patent: August 10, 2010
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Kazuaki Tabata, Hiroshi Kojima, Kazuya Hongo, Takayuki Yamada, Seiichi Takagi, Tetsuo Ohta, Masaki Hirota
  • Patent number: 7771907
    Abstract: A photoconductor containing an optional supporting substrate, a photogenerating layer, a charge transport layer, and a top overcoating layer in contact with and contiguous to the charge transport layer.
    Type: Grant
    Filed: February 19, 2008
    Date of Patent: August 10, 2010
    Assignee: Xerox Corporation
    Inventors: Jin Wu, John F Yanus, Kenny-Tuan Dinh, Daniel V Levy
  • Patent number: 7771909
    Abstract: A photoconductor that includes a photogenerating layer, and at least one charge transport layer where the photogenerating layer contains a titanyl phthalocyanine prepared, for example, by dissolving a Type I titanyl phthalocyanine in a solution comprising a trihaloacetic acid and an alkylene halide; adding the resulting mixture of the dissolved Type I titanyl phthalocyanine to a solution of an alcohol and an alkylene halide thereby precipitating a Type Y titanyl phthalocyanine; and treating the Type Y titanyl phthalocyanine with a monohalobenzene, and wherein the photogenerating layer is prepared from a dispersion of the titanyl phthalocyanine Type V and a chlorinated solvent of at least one of a dichloroethane and a dichloropropane.
    Type: Grant
    Filed: November 20, 2006
    Date of Patent: August 10, 2010
    Assignee: Xerox Corporation
    Inventors: Cuong Vong, Ah-Mee Hor
  • Patent number: 7774655
    Abstract: Systems and methods for analyzing time series data are disclosed. A query including a machine variable identifier may be received. The machine variable identifier may include an identifier pertaining to one or more of a state, a condition and a performance measure for a printer. A first time series data entry may be determined based on the query. The first time series data entry may include a data value and a time entry for the machine variable identifier. One or more second time series data entries may be selected based on the data value associated with the first time series data entry. One or more maintenance operations may be performed based on the one or more second time series data entries.
    Type: Grant
    Filed: March 16, 2007
    Date of Patent: August 10, 2010
    Assignee: Xerox Corporation
    Inventors: Sankar Virdhagriswaran, John C. Handley
  • Patent number: 7773239
    Abstract: An electrophotographic printing or copying machine includes a functional module which can be readily removed and replaced by service personnel. The module includes a monitor in the form of an electronically-readable memory, which includes information about how the particular module is to be operated. A distribution board electronically accesses the memories within the monitors and reads therefrom information, such as how much voltage to supply to different components within each module. The distribution board can also update the number of prints made with each module, and maintain this count within the monitors.
    Type: Grant
    Filed: April 18, 2008
    Date of Patent: August 10, 2010
    Assignee: Xerox Corporation
    Inventors: Michael E Beard, Roger W Budnik, James M Pacer, Guru B Raj, Ralph A Shoemaker, Michael G Swales, David E Rollins, Porfirio J Perez, Ameet S Bhattacharya, David P Vanbortel, Steven E Kolb
  • Patent number: 7773803
    Abstract: A method and system is provided for segmenting scanned image data in accordance with mixed raster content processing for more efficient processing of non-uniform color page borders. A first processing method partitions the border so that resulting segments can be coded efficiently by cutting the border into segments along cut lines disposed in optimum position for minimizing a total area of bounding boxes for the page border segments. Another embodiment determines the color variance within the page border window and compares the variance against predetermined color variance threshold. A window width of the page border window is also determined and compared with a predetermined width threshold. When the variance and window widths are smaller than the thresholds, a uniform color is assigned to the non-uniform color page border and the border is coded in accordance with a foreground layer compression algorithm.
    Type: Grant
    Filed: May 11, 2006
    Date of Patent: August 10, 2010
    Assignee: Xerox Corporation
    Inventor: Zhigang Fan
  • Patent number: 7773906
    Abstract: An image forming device is disclosed which has: an image holding member which rotates; a charging roller press-contacting and being rotated by the image holding member, and charging the image holding member; and a cleaning roller press-contacting and being rotated by the charging roller, and cleaning the charging roller. The cleaning roller has a core whose both end portions are rotatably supported, and a cleaning member which is formed from a roller-shaped porous elastic body and is provided at a peripheral surface of the core. Axial direction end portion sides of the cleaning member are formed to be thicker than an axial direction central portion of the cleaning member.
    Type: Grant
    Filed: December 18, 2006
    Date of Patent: August 10, 2010
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Mitsuhiro Matsumoto, Mitsuo Yamamoto, Shigeru Tanaka, Hideaki Ohike
  • Patent number: 7773222
    Abstract: A system and method for full width scanning color analysis of a printed media sheet are disclosed. The full width array spectrophotometer system includes one or more substantially linear elongated illumination arrays of closely spaced multiple illumination sources. The sources include sets of illumination sources, including a first set of different color illumination sources and a second set including one or more UV-emitting illumination sources. The sets are arranged to span a printer paper path or other object path to illuminate a band extending transversely across a printed print media sheet or other object moving in the path. A full width array light imaging sensor includes an elongated array of multiple closely spaced photodetectors for detecting plural colors and is positioned adjacent to and extending substantially parallel to the linear array(s) to receive radiation reflected from the transverse illuminated band.
    Type: Grant
    Filed: August 20, 2008
    Date of Patent: August 10, 2010
    Assignee: Xerox Corporation
    Inventor: Lalit Keshav Mestha
  • Patent number: 7774085
    Abstract: A printing apparatus, method, and computer program of designing a floating roller in a tensioning system adapted to one of supply and receive a web of material to or from one of a web supply and a processing machine, comprising inputting external radius of said floating roller, measure of elasticity of the material, a thickness of the material, width of the material, and angles at which the material contacts the floating roller; and adjusting mass of the floating roller and rotational inertia of the floating roller based on external radius of the floating roller, measure of elasticity of the material, thickness of the material, width of the material, and angles at which the material contacts the floating roller such that the floating roller maintains a constant tension on the web of material as the material is passing through the tensioning system.
    Type: Grant
    Filed: May 18, 2007
    Date of Patent: August 10, 2010
    Assignee: Xerox Corporation
    Inventor: Ming Yang
  • Patent number: 7770877
    Abstract: A sheet supply tray and a sheet discharge tray are provided. Long sheets can be supplied from the sheet supply tray loaded with the long sheets. The sheet discharge tray is used also as the sheet supply tray, and receives the long sheets with a sheet discharge surface thereof in an area facing the sheet loading surface of the sheet supply tray. A discharge guide unit for guiding the discharge direction of the long sheets is detachably provided in such a dual-purpose type sheet discharge unit. A discharge/reception unit supporting the long sheets is detachably provided as a whole or a part of the sheet discharge unit. An extension sheet tray extensible with respect to a standard sheet tray is provided while the extension state of the extension sheet tray can be detected by an extension detection unit.
    Type: Grant
    Filed: March 13, 2003
    Date of Patent: August 10, 2010
    Assignee: Fuji Xerox Co., Ltd.
    Inventor: Yousuke Hasegawa
  • Patent number: 7770879
    Abstract: A recording medium transport apparatus includes: plural storage units each storing a recording medium; a transport unit that transports the recording medium from one of the storage units to a recording position where an image is recorded on the recording medium; a memory that stores a reference position of a recording medium prescribed for each storage unit; a measuring unit that measures a position of the transported recording medium; and a movement unit that reads the reference position corresponding to the storage unit that stored the transported recording medium, from the memory, and moves the recording medium according to the difference between the reference position and the measured position such that the position of the recording medium approaches the reference position when the recording medium is located upstream of the recording position in the transport direction thereof.
    Type: Grant
    Filed: December 10, 2008
    Date of Patent: August 10, 2010
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Toshiyuki Kazama, Michio Tada, Ryoji Watanabe, Shouichi Maeda, Makoto Ochiai, Tatsunori Izawa, Naoto Nishi, Yoshinobu Nakamura, Satoshi Kanou, Shun Yashima
  • Patent number: 7773242
    Abstract: A method of automatic correction of preflight defects located in print jobs submitted by print buyers to a print vendor through the Internet. The defect correction routine determines whether the print job files are non-compliant with an associated file format supported by the preflight system in a manner that can be automatically corrected, and initiates an auto-correct subroutine if the print job file content is non-compliant. The routine queries whether the print job file is missing any resources, and initiates an obtain resources subroutine if the print job file is missing resources. The routine queries whether the print job files include defects that can be manually corrected, and initiates a manual-correct subroutine if the print job files include such defects. The routine sends the print job to the workflow if no manual corrections are required.
    Type: Grant
    Filed: April 4, 2005
    Date of Patent: August 10, 2010
    Assignee: Xerox Corporation
    Inventor: Javier Morales
  • Patent number: 7772377
    Abstract: Disclosed is a colorant composition of the formula wherein R is an alkyl group, an aryl group, an arylalkyl group, or an alkylaryl group, and wherein R can be joined to the phenyl moiety to form a ring, R? is an aromatic- or heteroaromatic-containing group, each Ra, independently of the others, is a halogen atom, an alkyl group, an alkoxy group, a nitrile group, a nitro group, an amide group, or a sulfonamide group, w is an integer of 0, 1, 2, 3, or 4, n is an integer representing the number of carbon atoms in each repeat alkylene oxide unit, and x is an integer representing the number of repeat alkylene oxide units, wherein said colorant has no more than one —OH, —SH, or primary or secondary amino group per molecule.
    Type: Grant
    Filed: January 25, 2008
    Date of Patent: August 10, 2010
    Assignee: Xerox Corporation
    Inventors: Jeffrey H Banning, Donald R Titterington, Clifford R King
  • Patent number: 7770881
    Abstract: A sheet material feeding device comprises a sheet material housing part housing a sheet bundle having a plurality of sheet being stacked; a conveying-out unit press-contacting onto the front edge side of the upper surface of the sheet bundle to exert a push-out force, feeding a sheet by the push-out force in a predetermined conveying-out direction, and separating the sheet from the sheet bundle; a feeding unit arranged on the downstream side of the sheet material housing part along the conveying-out direction and continuing the feeding of the sheet, and after the conveying-out unit moves away from the rear edge of a preceding sheet, the conveying-out unit conveys a following sheet in a state that the following sheet is overlapped at the lower side of the preceding sheet until the front edge of the following sheet reaches a predetermined guide position set between the sheet bundle and the feeding unit.
    Type: Grant
    Filed: March 27, 2006
    Date of Patent: August 10, 2010
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Takeshi Yokemura, Shinji Masaki, Koji Udagawa, Yumiko Kurosawa, Masahiro Mori, Masayoshi Nishida
  • Publication number: 20100198541
    Abstract: A management apparatus includes: a managing unit that manages production information corresponding to each of a plurality of information processing devices; a specifying unit that specifies, based on a defect notice for at least one component and the production information on the managed information processing devices, at least one of the information processing devices using the component; a state judging unit that judges whether each information processing device is in an operable state where a processing function of each information processing device is operable in an environment in which the processing function of each information proceeding device is provided; and a operation restricting unit that performs operation restriction for the processing function of each information proceeding device according to the defect notice if the state judging unit judges that each information processing device is in the operable state.
    Type: Application
    Filed: August 7, 2009
    Publication date: August 5, 2010
    Applicant: Fuji Xerox Co., Ltd.
    Inventors: Noriyuki MATSUDA, Masayasu TAKANO, Akiko SETA, Koji ADACHI, Kaoru YASUKAWA, Tetsuichi SATONAGA