Patents Assigned to Xerox
  • Patent number: 6243112
    Abstract: A thermal ink jet printhead contains, on a front face, a remote plasma deposited fluoropolymer film. The fluoropolymer film has a high fluorine to carbon ratio. The film also possesses excellent mechanical durability. The film may be prepared by forming a remote plasma from precursor gases containing fluorocarbons and depositing from the remote plasma onto a front face of a thermal ink jet printhead.
    Type: Grant
    Filed: July 1, 1996
    Date of Patent: June 5, 2001
    Assignee: Xerox Corporation
    Inventors: Daniel E. Kuhman, Christopher Constantine, Kevin N. Beatty
  • Patent number: 6241619
    Abstract: A shaft including a rotatable, torque transmitting elongated member is provided. A portion of the shaft is hollow and has an inside surface defining a shaft core. The elongated member has an outside surface including a torque transmitting portion and a functional feature portion. The elongated member has a one piece construction.
    Type: Grant
    Filed: April 16, 1999
    Date of Patent: June 5, 2001
    Assignee: Xerox Corporation
    Inventor: Robert D. Russell
  • Patent number: 6243058
    Abstract: A display is provided with an insulative layer whose electrical properties have been selected so that the display can be addressed by the effects of triboelectrically generated charges and thus requires no stylus or special writing utensil. Thus, the display can be addressed by dragging a finger across the display. Alternately, the display is provided with an insulafive layer whoes electrical properties have been selected so that the display is addressed with a stylus and is immune from the effects of stray riboelectrically generated charges.
    Type: Grant
    Filed: March 25, 1999
    Date of Patent: June 5, 2001
    Assignee: Xerox Coporation
    Inventors: James C. Mikkelsen, Nicholas K. Sheridon, Edward A. Richley
  • Patent number: 6241344
    Abstract: An image forming method and an image forming apparatus which are capable of jetting ink having high viscosity stably without incremental energy consumption, at a small quantity, and at high speed, and capable of forming high quality and highly precise images without feathering and bleeding on various recording media at high speed are provided. Color ink is held on a flat surface of an ink carrier in the form of a uniform pattern, and the ink carrier is partially heated correspondingly to image information. Then, an air layer is formed on the interface or near the interface between the ink carrier and the color ink. The color ink is jetted by the pressure generated when the air layer is formed to adhere on a recording medium, and thus an image is formed.
    Type: Grant
    Filed: November 2, 1998
    Date of Patent: June 5, 2001
    Assignee: Fuji Xerox Co., Ltd.
    Inventor: Yoshinori Machida
  • Patent number: 6243541
    Abstract: An image reading is executed to only specific originals among plural originals. An original information detecting part detects original information on each original based on the result of prescanning. A judging part, based on copying conditions set by a user, judges whether the original information meets the copying conditions or not and determines the necessity of copying accordingly. An operation control part controls respective constitutions based on the result of judging of necessity. According to this device, for example, only color originals can be copied or only originals having a specific size can be copied. Furthermore, only originals present between colored partition papers can be copied.
    Type: Grant
    Filed: December 3, 1999
    Date of Patent: June 5, 2001
    Assignee: Fuji Xerox Co., Ltd.
    Inventor: Yasuyuki Shimizu
  • Patent number: 6243550
    Abstract: An image formation apparatus for document production of reproduction which includes a plurality of paper feed trays T1-T4 placed in overlapped relation at multiple stages from top to bottom wherein the length of the top-stage paper feed tray T1 in the paper feed direction is formed shorter than the length of each of the paper feed trays T2-T4 at lower stages in the paper feed direction, an image support 16, an intermediate transfer body B, and a secondary transfer device 31 placed in a tray upward paper feed side space Sa above the paper feed tray T1, a fuser T placed in a top-stage tray side space Sb1 on the side of the top-stage paper feed tray T1 and an upward side space Sb2 above the space Sb1, and a developing unit D placed in the upward side space Sb2.
    Type: Grant
    Filed: May 1, 2000
    Date of Patent: June 5, 2001
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Takashi Fuchiwaki, Yasutomo Ishii, Nobukazu Takahashi, Kazunori Numao, Fumio Furusawa, Junichiro Sameshima, Hitoshi Funato, Ryuji Hattori
  • Patent number: 6243548
    Abstract: A method for controlling an imaging apparatus based on an intelligent usage tracking system is provided. The method monitors use of the imaging apparatus over a period of time and uses the collected data to predict future use. The collected data is used to control the imaging apparatus to minimize warm-up delays and to maximize time in one or more standby modes.
    Type: Grant
    Filed: February 25, 1999
    Date of Patent: June 5, 2001
    Assignee: Xerox Corporation
    Inventors: James A. Hebert, James D. Rise, Jack E. Fanning, Kevin J. Mills, William D. Anderson
  • Patent number: 6241364
    Abstract: An infrared beacon assembly includes a light source removeably attachable to lighting fixtures that supply electrical power. A voltage converter is connected to the light source to provide a reduced supplied voltage. The infrared beacon broadcasts a data signal.
    Type: Grant
    Filed: November 23, 1999
    Date of Patent: June 5, 2001
    Assignee: Xerox Corporation
    Inventors: Roy Want, David Goldberg, Anthony G. LaMarca, Todd A. Cass, Mark D. Weiser
  • Patent number: 6243622
    Abstract: A touchable user interface including multiple robotic modules that can “walk” over each other to allow reconfiguration of the interface. Each module preferably includes motive devices as well as connective devices communication between the modules and a control unit that send commands to the interface, thereby enabling its reconfiguration. Depending on the needs of the user/builder, the interface can be an input interface, or both. The interface can also act as robotic appendage/manipulator capable of engaging and manipulating a wide variety of objects and/or substances by engulfing such objects and/or substances in “pseudopods” and structural voids which the modules are moved by instructions from the control unit.
    Type: Grant
    Filed: October 16, 1998
    Date of Patent: June 5, 2001
    Assignee: Xerox Corporation
    Inventors: Mark H. Yim, John O. Lamping, Eric W. Mao
  • Patent number: 6243100
    Abstract: An image processing system for performing interpolation includes an image data source for supplying rasters of image data based on laser spot position on a xerographic photoreceptor. A two dimensional resampling interpolator is connected to receive the image data from the image data source and determine a resample value and its associated two dimensional slope information. This information can be used by a thresholder to predict where exposure intensities of lineart will cross a xerographic threshold on the photoreceptor. Alternatively, a halftoner unit that includes a dot generator and a screen generator can use the information from the resampling interpolator to improve control of dot shape and spacing.
    Type: Grant
    Filed: January 11, 1996
    Date of Patent: June 5, 2001
    Assignee: Xerox Corporation
    Inventors: Douglas N. Curry, Donald J. Curry
  • Patent number: 6242144
    Abstract: An electrophotographic imaging member including a substrate, a charge generating layer, and a charge transport layer including a hole transport host material, a trace amount of a shallow trap dopant having a shallow trap electrochemical oxidation potential between about 0.02 volt and about 1.5 volts lower than that of the hole transport host and a film forming binder.
    Type: Grant
    Filed: September 11, 2000
    Date of Patent: June 5, 2001
    Assignee: Xerox Corporation
    Inventors: Liang-Bih Lin, Markus R. Silvestri, John F. Yanus, Richard H. Nealey, Harold F. Hammond, Cindy C. Chen, Kenny-tuan T. Dinh, James M. Markovics
  • Patent number: 6242145
    Abstract: A developer of a mixture of carrier particles and toner particles containing at least one binder, at least one colorant, and optionally one or more additives, has a triboelectric value of from 35 to 60 &mgr;C/g, a charge distribution (Q/D) of from −0.5 to −1.0 fC/&mgr;m and the distribution is substantially unimodal and possesses a peak width of less than 0.5 fC/&mgr;m, preferably less than 0.3 fC/&mgr;m, and a conductivity of the developer ranges from 1×10−11 to 10×10−15 mho/cm as measured at 30 V. The carrier particles of the developer preferably have an average particle diameter of 65 to 90 microns and a size distribution wherein 2.0% or less of a total number of carrier particles have a size less than 38 micrometers. The ratio of carrier volume median diameter to toner volume median diameter is about 10:1. The developer finds particular use in devices utilizing hybrid scavengeless development.
    Type: Grant
    Filed: March 7, 2000
    Date of Patent: June 5, 2001
    Assignee: Xerox Corporation
    Inventors: Merrilee A. Galloway, Scott M. Silence, Richard J. Muller, William H. Hollenbaugh, Jr., Amy L. Stamp
  • Patent number: 6241224
    Abstract: A torsion spring for connecting a first member and a second member that are aligned along a longitudinal axis and that rotate about that axis together. The torsion spring includes a first molded plastic end that mates with the first member, a second molded plastic end that mate with the second member, and an elastic member that connects the first and second molded plastic ends together. The elastic member is for providing a force that biases the second member relative to the first member. The elastic member can be made of molded plastic arms or an elastic compound such as rubber.
    Type: Grant
    Filed: September 30, 1999
    Date of Patent: June 5, 2001
    Assignee: Xerox Corporation
    Inventor: Bernard Leibman
  • Patent number: 6242146
    Abstract: A carrier for two-component electrostatic-charged image developer, at least the surface of which is coated with a resin, is provided. The apparent density &rgr; (g/cm3) of the carrier, the mean particle diameter D (cm) of the carrier, and the specific area S (cm2/g) of the carrier core material satisfy the following conditions: 600≦S≦1500 10/(D×&rgr;)−S≦300. A two-component developer and an image-forming process using the carrier are also provided.
    Type: Grant
    Filed: February 7, 2000
    Date of Patent: June 5, 2001
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Yuka Ishihara, Hiroshi Nakazawa, Akihiro Iizuka, Yoshifumi Iida, Kaori Oishi, Tomohito Nakajima, Takashi Imai, Masanori Ichimura
  • Patent number: 6239886
    Abstract: The present invention is directed to a method and apparatus for improving the efficiency of color correcting subsampled luminance and chrominance based data. More specifically, the present invention is directed to a method of applying a full conversion between color spaces for one pixel in a selected pixel block. Chrominance values are assigned to the remaining pixels based upon their luminance values relative to the luminance value of the converted pixel. The invention may be used to convert between various types of color spaces, and may be used in the processing of both device dependent and device independent data.
    Type: Grant
    Filed: January 8, 1998
    Date of Patent: May 29, 2001
    Assignee: Xerox Corporation
    Inventors: R. Victor Klassen, Thyagarajan Balasubramanian
  • Patent number: 6240205
    Abstract: A method and apparatus for segmenting image data into windows and for classifying the windows as typical image types includes making two passes through the image data. The method includes a step of making a first pass through the image data to identify windows and to record the beginning points and image types of each of the windows, and a step of making a second pass through the image data to label each of the pixels as a particular image type. The invention also includes a macro-detection method and apparatus for separating a scanline of image data into edges and image runs and for classifying each of the edges and image runs as standard image types. In the macro-detection method, image runs and edges are classified based on micro-detection results and based on image types of adjacent image runs.
    Type: Grant
    Filed: June 18, 1998
    Date of Patent: May 29, 2001
    Assignee: Xerox Corporation
    Inventors: Zhigang Fan, Kathy Ryall, Jeng-Nan Shiau, Shriram Revankar
  • Patent number: 6239828
    Abstract: This invention provides an image formation device at low cost, which can be miniaturized, of which the quality of an image is uniform, which can form a high resolution of color image at high speed wherein even if the relative mounting position of a light source and an optical element is dislocated, the deterioration of color registration can be reduced. Laser beams for each color sequentially emitted from each laser element of a laser array pass an imaging optical system and are split into the side of photoconductor drums and into the side of a deflecting optical system by a splitting optical system. Laser beams incident on the deflecting optical system are reflected by optical mirrors so that principal rays of the laser beams respectively converge on photodetectors and are incident on approximately the same position of each photodetector. The photodetectors individually detect the luminous energy of laser beams from each laser element.
    Type: Grant
    Filed: September 3, 1999
    Date of Patent: May 29, 2001
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Masao Ito, Shoji Yamaguchi
  • Patent number: 6238833
    Abstract: A composition including: a polymeric compound including a polyvinyl butyral moiety, an optional polyvinyl alcohol moiety, an optional polyvinyl acetate moiety, and a modified polyvinyl moiety of the formula where R is an organic substituent, wherein the polyvinyl alcohol moiety has a hydroxyl content that ranges from 0% to about 5% by weight when —OR is an acetate.
    Type: Grant
    Filed: September 1, 1999
    Date of Patent: May 29, 2001
    Assignee: Xerox Corporation
    Inventors: John S. Chambers, Huoy-Jen Yuh, H. Bruce Goodbrand
  • Patent number: 6239193
    Abstract: A process for the preparation of an ink which comprises mixing an ink vehicle, a colorant and a latex, and wherein said latex is generated by the polymerization of a mixture of olefinic monomers, and which polymerization is accomplished in the presence of a nonionic polyethoxylated surfactant, and which surfactant possesses an HLB value of from about 16.5 to about 21.
    Type: Grant
    Filed: August 30, 1999
    Date of Patent: May 29, 2001
    Assignee: Xerox Corporation
    Inventors: Chieh-Min Cheng, Garland J. Nichols
  • Patent number: 6238046
    Abstract: A variable throughput active-passive dryer assembly is provided for handling and controllably drying wet sheets printed in a liquid ink printer.
    Type: Grant
    Filed: October 4, 1999
    Date of Patent: May 29, 2001
    Assignee: Xerox Corporation
    Inventor: Frederick A. Donahue