Patents Assigned to Xerox
  • Patent number: 6751358
    Abstract: A system for simulating grayscales in a digital printer, such as an ink-jet printer, exploits a modified error diffusion technique. When a datum for a particular pixel in an image is 0, the datum is substituted with a low-level artificial datum such as 4 on a scale from 0 to 255. The addition of the artificial datum in the error diffusion algorithm avoids artifacts caused by the presence of large number of zeros in the error diffusion algorithm.
    Type: Grant
    Filed: June 21, 1999
    Date of Patent: June 15, 2004
    Assignee: Xerox Corporation
    Inventors: David A. Mantell, James B. Kuwik
  • Patent number: 6749787
    Abstract: A mold used to form a magnetic member includes a mold body having a mold opening, a mold support that supports the mold cavity, and a mold insert. The mold insert is disposed in the mold opening of the mold body to form a mold cavity. The mold insert is coated with a coating to protect the mold body from chemical attack and abrasive wear of the mold material. The coating comprises an electroless nickel layer formed on or over the mold insert, and a chromium nitride layer formed on or over the electroless nickel layer. The mold insert can be formed of beryllium-copper (Be—Cu).
    Type: Grant
    Filed: February 28, 2001
    Date of Patent: June 15, 2004
    Assignee: Xerox Corporation
    Inventors: Paul F. Mastro, Christopher D. Blair, Jennifer R. Wagner, Jay Schneider
  • Patent number: 6750755
    Abstract: An identification apparatus and method comprising an array of retractable pins in association with a housing attached to a base component through which each pin individually passes. The apparatus is attached to a primary device and in communication therewith. Each retractable pin is in individual physical contact with tension springs positioned below the pin and located in a containment sleeve within the housing. Each spring continuously exerts pressure on the base of their respective pins so as to push the pin up through the base component. At the base of each spring is a pressure sensitive pad in communication with the primary device.
    Type: Grant
    Filed: December 20, 2001
    Date of Patent: June 15, 2004
    Assignee: Xerox Corporation
    Inventors: Debora Margaret Hejza Litwiller, Philip E. Blair
  • Patent number: 6750843
    Abstract: Provided is a stable display device. The display device includes a pair of substrates that face each other, a spacer formed on one of the pair of substrates, a resin to fix one end of the spacer adjacent to the other substrate to the other substrate, and first and second particles of different colors and different electric characteristics all sealed in the inner space formed by the pair of substrates and the spacer.
    Type: Grant
    Filed: August 24, 2001
    Date of Patent: June 15, 2004
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Motohiko Sakamaki, Yoshinori Machida, Kiyoshi Shigehiro, Yoshiro Yamaguchi, Takeshi Matsunaga
  • Patent number: 6751430
    Abstract: A method of, and a toner purging development apparatus for, enabling clean and efficient accomplishment of custom color on demand imaging in a xerographic color machine using two component developer material.
    Type: Grant
    Filed: June 20, 2002
    Date of Patent: June 15, 2004
    Assignee: Xerox Corporation
    Inventor: Ronald E. Godlove
  • Patent number: 6749280
    Abstract: Coordinates in an image and its corresponding color-converted data are supplied to a control/operation portion for every pixel. Quantization is applied to each color. The quantization is carried out so that a kind of dot for at least one color is made different from kinds of dots for the others in one and the same pixel when dots for different colors are superimposed on the pixel. The control/operation portion refers to a two-dimensional matrix on the basis of the quantization result, determines an output dot for each color, and converts the data into data which can be processed by a printer. The printer records an image based on the quantization result while reciprocating a recording head. Thus, it is possible to reduce color shift caused by the difference of the ink landing order at the time of reciprocating the head for recording.
    Type: Grant
    Filed: December 13, 2002
    Date of Patent: June 15, 2004
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Tohru Shimizu, Daisuke Tatsumi
  • Patent number: 6750928
    Abstract: A reflective-type multi-color display device is capable of obtaining a vivid and bright multi-color display with less display layers, and therefore, with a state where a parallax is decreased and a cost of the device can be reduced. Specifically, the display device of the present invention includes a cell 51 having a display layer 31 comprising a right-handed cholesteric liquid crystal which selects and reflects blue, a cell 53 having a display layer 33 comprising a left-handed cholesteric liquid crystal which selects and reflects green, a cell 57 having a display layer 37 comprising a right-handed cholesteric liquid crystal which selects and reflects yellow and a cell 55 having a display layer 35 comprising a left-handed cholesteric liquid crystal which selects and reflects red, these layers being laminated in this order from the observation side. A color filter 43 which transmits red and absorbs the other color light is provided between the cell 57 and the cell 55.
    Type: Grant
    Filed: May 9, 2003
    Date of Patent: June 15, 2004
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Naoki Hiji, Shigeru Yamamoto, Takehito Hikichi, Teiichi Suzuki
  • Patent number: 6750120
    Abstract: A method of using ammonia to form a GaAs alloy with nitrogen atoms is described. The method includes the operation of introducing ammonia with an agent to assist in the breakdown of the ammonia into a reaction chamber with the GaAs film. Agents that are described include radiation as well as compounds that include aluminum.
    Type: Grant
    Filed: December 12, 2002
    Date of Patent: June 15, 2004
    Assignee: Xerox Corporation
    Inventors: Michael A. Kneissl, David W. Treat
  • Patent number: 6750609
    Abstract: An organic light emitting device composed of: a first electrode; a second electrode; and a luminescent region including an organic electroluminescent material between the first electrode and the second electrode, wherein one of the first electrode and the second electrode includes both a substantially transparent charge injecting layer adjacent to the luminescent region and an electrically conductive light absorbing layer.
    Type: Grant
    Filed: August 22, 2001
    Date of Patent: June 15, 2004
    Assignee: Xerox Corporation
    Inventors: Hany Aziz, Nan-Xing Hu, Zoran D. Popovic, James M. Duff
  • Patent number: 6751354
    Abstract: Techniques for classifying video frames using statistical models of transform coefficients are disclosed. After optionally being decimated in time and space, image frames are transformed using a discrete cosine transform or Hadamard transform. The methods disclosed model image composition and operate on grayscale images. The resulting transform matrices are reduced using truncation, principal component analysis, or linear discriminant analysis to produce feature vectors. Feature vectors of training images for image classes are used to compute image class statistical models. Once image class statistical models are derived, individual frames are classified by the maximum likelihood resulting from the image class statistical models. Thus, the probabilities that a feature vector derived from a frame would be produced from each of the image class statistical models are computed.
    Type: Grant
    Filed: March 11, 1999
    Date of Patent: June 15, 2004
    Assignees: Fuji Xerox Co., Ltd, Xerox Corporation
    Inventors: Jonathan T. Foote, Lynn Wilcox, Andreas Girgensohn
  • Patent number: 6751435
    Abstract: A seamed or seamless intermediate transfer member comprising a layer having an oxidized charge transport molecule, a charge transport molecule, or mixtures thereof, wherein in the seamed embodiment, the seam adhesive may also include an oxidized charge transport molecule, a charge transport molecule, or mixtures thereof.
    Type: Grant
    Filed: December 13, 2001
    Date of Patent: June 15, 2004
    Assignee: Xerox Corporation
    Inventors: Bing R. Hsieh, Robert C. U. Yu, Satchidanand Mishra, T. Edwin Freeman, Eugene A. Swain, Anthony M. Horgan, Huoy-Jen Yuh, Geoffrey M. T. Foley
  • Patent number: 6751432
    Abstract: An apparatus and process for reducing accumulation of toner from the surface of an electrode member in a development unit of an electrostatographic printing or copying apparatus by providing an organometallic coating composition including an organometallic material on at least a portion of the electrode member.
    Type: Grant
    Filed: May 2, 2002
    Date of Patent: June 15, 2004
    Assignee: Xerox Corporation
    Inventor: David J. Gervasi
  • Patent number: 6751429
    Abstract: A backer bar assembly for supporting a photoreceptor belt, including a substantially rigid first backer bar having first and second ends and a second developer backer bar having first and second ends. The first and second ends of the first backer bar are substantially fixed, the first end of the lower developer backer bar is substantially fixed, and the second end of the lower developer backer bar is free to travel a short distance in response to an externally applied force.
    Type: Grant
    Filed: December 16, 2002
    Date of Patent: June 15, 2004
    Assignee: Xerox Corporation
    Inventor: Joseph M. Wing
  • Publication number: 20040109184
    Abstract: To reduce low-frequency moiré in secondary colors and tertiary colors in four color screens, between at least two halftone screens, screen vectors wa2, wb2 are arranged to match each other, while other screen vectors are arranged not to match each other. A halftone screen is an orthogonal screen in which screen vector wa2 is perpendicular to basis vector ra1. A halftone screen is a non-orthogonal screen in which screen vector wb2 is perpendicular to basis vector rb1. When screen vector wa2 matches screen vector wb2, spatial frequency spectra corresponding to screen vectors wa2 and wab2, match each other. With such a relationship, because a pair of spatial frequency spectra can match each other between two colors, wider intervals can be provided for the spatial frequency spectra of the remaining colors of four colors, which would suppress low-frequency moiré.
    Type: Application
    Filed: September 23, 2003
    Publication date: June 10, 2004
    Applicant: Fuji Xerox Co., Ltd.
    Inventor: Akira Ishii
  • Publication number: 20040109711
    Abstract: An image forming apparatus has a cleaning blade adapted to scrape off the residual toner adhering to the surface of the image carrier, a brush arranged upstream relative to the cleaning blade in the direction of revolution of the image carrier and adapted to apply solid lubricant to the surface of the image carrier, and a support member that supports a piece of solid lubricant and adapted to generate moment and to cause the solid lubricant to come into contact with the brush due to the generated moment.
    Type: Application
    Filed: July 29, 2003
    Publication date: June 10, 2004
    Applicant: Fuji Xerox Co., Ltd.
    Inventor: Takashi Kanagawa
  • Publication number: 20040109699
    Abstract: A modular toner image producing machine having plural modules including redundant modules is provided and includes (a) a photoreceptive module including a movable endless photoconductive member having an image bearing surface; (b) toner image forming modules for forming a toner image on the image bearing surface, each of the toner image forming modules including module-specific fault detectors; (c) at least one sheet feeding module for feeding a copy sheet to receive the toner image from the image bearing surface; (d) a fusing module for heating and fixing the toner image onto the copy sheet forming a hard copy; (e) at least one finishing module for preparing and arranging a series of hard copies into sets thereof for removal by an operator; and (f) a control module including a main electronic control system having a centrally located user interface device, and distributed module-specific control subsystems, each having a dedicated module and being connected to the main electronic control system and to module
    Type: Application
    Filed: December 9, 2002
    Publication date: June 10, 2004
    Applicant: Xerox Corporation
    Inventors: Stephen F. Skrainar, Stanley H. Brumaghim, Keith L. Willis
  • Publication number: 20040111709
    Abstract: A class of add-on system components providing functionality of devices, management of self-help, customization and enhancement of services for devices, and remote monitoring at significantly reduced cost. It reduces the cost of UI and greatly enhances ease-of-use by realizing that the networked system can be headless and use a browser-based UI for its platform. It embeds a Device Model Agent (DMA) and connects to the Device-Centric Services platform to offer services. Additionally, it offers customized diagnostic access for customer representatives to enable self-help service actions to be performed, unifies and manages multiple access needs to several disparate data access mechanisms, and uses largely COTS PC hardware rather than customized PWBs.
    Type: Application
    Filed: October 16, 2003
    Publication date: June 10, 2004
    Applicant: Xerox Corporation
    Inventors: Michael R. Furst, Loranzo Whitfield, Naveen Sharma, Ronald M. Rockwell, Tracy E. Thieret, Claude S. Fillion, Weixia Huang, Michael P. Kehoe, Arturo M. Lorenzo, Mary C. McCorkindale, Robert J. St. Jacques, Michael F. Cavanaugh, Christopher J. Regruit
  • Publication number: 20040108309
    Abstract: A method of reducing a fusing apparatus recovery time from a low energy-saver mode temperature back up to a high fusing temperature, the method includes supplying power to a heated member of the fusing apparatus to warm the fusing apparatus from a start up temperature to the high fusing temperature from a primary power supply; and supplying full power to the heated member of the fusing apparatus to warm the fusing apparatus from a start up temperature to the high fusing temperature from a battery power supply.
    Type: Application
    Filed: December 10, 2002
    Publication date: June 10, 2004
    Applicant: Xerox Corporation
    Inventor: Neil J. Dempsey
  • Publication number: 20040109055
    Abstract: An offset printing apparatus having a coated imaging member for use with phase-change inks, has a substrate, an optional intermediate layer, and thereover an outer coating with a nano-size filler having an average particle size of from about 1 to about 250 nanometers, and an optional heating member associated with the offset printing apparatus.
    Type: Application
    Filed: December 9, 2002
    Publication date: June 10, 2004
    Applicant: Xerox Corporation
    Inventors: David H. Pan, Santokh S. Badesha
  • Publication number: 20040109194
    Abstract: A copying apparatus detects as to whether or not an IC chip is present in an original paper. When the IC chip is detected, the copying apparatus reads data from this IC chip. When the read data is additional information, which can be printed as an image, the copying apparatus stops a printing process, and notifies a message indicating that the read data is the additional information to the user and then, waits for an instruction issued by the user. When the user instructs to print the additional information, the copying apparatus prints the image read from the original paper and the additional information read from the IC chip on a printing paper in an output format designated by the user.
    Type: Application
    Filed: August 26, 2003
    Publication date: June 10, 2004
    Applicant: Fuji Xerox Co., Ltd.
    Inventor: Toshiyuki Yano