Patents Assigned to Xerox
  • Patent number: 6132924
    Abstract: A process for the preparation of toner comprising mixing a colorant, a latex, and two coagulants, followed by aggregation and coalescence.
    Type: Grant
    Filed: October 15, 1998
    Date of Patent: October 17, 2000
    Assignee: Xerox Corporation
    Inventors: Raj D. Patel, Michael A. Hopper, Richard P. N. Veregin
  • Patent number: 6131900
    Abstract: A printed sheets output inverting and stacking system for printers printing normal size sheets oriented widthwise and long size sheets oriented lengthwise, with a disk type rotatable sheet inverting and stacking system positioned adjacent to one side of the printer output path with its axis of rotation parallel to the direction of sheet movement of the printer. A scuffer or other lateral sheet feeding system receives the printed sheet output of the printer and laterally moves each sheet towards one side of the printer output path, at right angles to the original direction of sheet movement, and into the sheet inverting slots of the rotatable disk inverter-stacker, so that the long size sheets are inverted widthwise, for increased stacking reliability.
    Type: Grant
    Filed: September 30, 1999
    Date of Patent: October 17, 2000
    Assignee: Xerox Corporation
    Inventor: Ssujan Hou
  • Patent number: 6132912
    Abstract: A photoconductive imaging member comprised of a supporting substrate, a layer (1) thereover, a photogenerating layer and a charge transport layer, and wherein said layer (1) is generated from a mixture of a polyhydroxyalkylacrylate, and an amino alkyltrialkoxysilane.
    Type: Grant
    Filed: May 27, 1999
    Date of Patent: October 17, 2000
    Assignee: Xerox Corporation
    Inventors: Timothy J. Fuller, Damodar M. Pai, John F. Yanus, Markus R. Silvestri, Huoy-Jen Yuh, John S. Chambers, Harold F. Hammond, Susan M. Vandusen, Dennis J. Prosser, Kathleen M. Carmichael, Robert C. U. Yu, Neil S. Patterson
  • Patent number: 6132352
    Abstract: Selectable inverting or folding of various sizes of sheets in various fold positions is provided with an integral dual mode inverting or folding apparatus including a sheet inverting chute for receiving and guiding a sheet therein and having both an input and an intermediate aperture; and a reversible servo driven sheet drive in the chute downstream of the intermediate aperture. A sheet fed into the chute for inversion is reverse driven back to the chute input. A sheet fed into the chute for folding is instead stopped at the desired folding position by the servo drive and reverse driven out of the intermediate aperture into a sheet folding nip, preferably with the assistance of a blade member moved through the intermediate aperture to buckle and push that portion of the sheet adjacent to the intermediate aperture into the sheet folding nip.
    Type: Grant
    Filed: November 23, 1998
    Date of Patent: October 17, 2000
    Assignee: Xerox Corporation
    Inventor: Jason P. Rider
  • Patent number: 6132917
    Abstract: A carrier comprised of a core and thereover a polymer generated from a blend of a polymer containing amine groups and a second polymer containing carboxylic acid functional groups.
    Type: Grant
    Filed: March 29, 2000
    Date of Patent: October 17, 2000
    Assignee: Xerox Corporation
    Inventors: Thomas R. Hoffend, Robert D. Bayley, Carol A. Fox, John G. VanDusen, Scott M. Silence, K. Derek Henderson
  • Patent number: 6134019
    Abstract: In a document processing system, whether a standalone copier, or network system including printers, scanners and facsimiles, a user is presented with a display in which numerous features, such as print or copy features, are offered. Each feature may include a plurality of selectable options, such as staple/no staple or simplex/duplex. If he selection of one option form a first feature precludes selection of another option of a second feature, such as for example precluding the placing of duplex images on a transparency, the precluded options in the second feature are indicated as unavailable, and a help button is displayed. When the help button is indicated by a cursor, the user sees only the specific information why the option in the second feature was precluded.
    Type: Grant
    Filed: September 3, 1998
    Date of Patent: October 17, 2000
    Assignee: Xerox Corporation
    Inventors: Stanley E. Wantuck, Jr., Alan K. Robertson, Gary M. Davis
  • Patent number: 6132918
    Abstract: A process for the preparation of polymers which comprises generating a solution of water and polyvinyl alcohol with acetate groups; adding thereto a mixture of an alkali metal iodide and iodine; adding thereto initiator, and optional crosslinking agent; adding monomer, a mixture of monomers, or a monomer/polymer mixture; homogenizing, and polymerizing; and wherein there is formed an iodide/iodine/acetate complex prior to said polymerizing.
    Type: Grant
    Filed: March 29, 2000
    Date of Patent: October 17, 2000
    Assignee: Xerox Corporation
    Inventors: Thomas E. Enright, George Liebermann, Scott M. Silence, K. Derek Henderson, Hadi K. Mahabadi, Bernard A. Kelly
  • Patent number: 6130684
    Abstract: An ink jet printer includes a capping and wiping system in a maintenance station which is connected to a common vacuum source. The wiping system includes a blotter-type collection member which presents an air vent when the printhead is in a capped position. When a priming operation is initiated, the air vent route is blocked, and full pressure is applied at the capping nozzle interface.
    Type: Grant
    Filed: December 9, 1998
    Date of Patent: October 10, 2000
    Assignee: Xerox Corporation
    Inventors: Karai P. Premnath, William L. King, Thomas R. Binnert, Paul F. Sawicki
  • Patent number: 6130675
    Abstract: Input color signals are input at step S11 and are converted into first CMYK color material amounts to minimize a first distance function at step S12. At step S13, color coordinates reproduced from the first CMYK color material amounts are obtained based on a printer model. If the input color signals are determined within a color reproduction range at step S14, the first CMYK color material amounts are output at step S22. If the input color signals are determined outside the color reproduction range, reproduced lightness is compared with input lightness at step S15. If the reproduced lightness is less than the input lightness, lightness weight .alpha. responsive to a yellow saturated color rate is used to generate a second distance function at steps S16-S18. On the other hand, if the reproduced lightness is equal to or greater than the input lightness at step S15, a second distance function having weight as a constant is generated at steps S19 and S20.
    Type: Grant
    Filed: January 12, 1998
    Date of Patent: October 10, 2000
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Kazumasa Murai, Hitoshi Ogatsu
  • Patent number: 6130966
    Abstract: A facsimile apparatus contains transfer modes such as a standard mode, a fine image quality mode, a super fine image quality mode which are different from one another in resolution. A signal representing each transfer mode is transmitted from the transmission side to the reception side before the transmission and reception of facsimile image data. A control unit detects the resolution of reception data according to the transfer mode signal to switch over methods for conversion into high-tone in a high-tone conversion unit or to set the magnification of conversion of a resolution conversion unit according to the detected resolution. In this case, when high resolution is detected, the unit for conversion into high-tone executes conversion into multi-value using an area of 17.times.17 picture elements around candidate picture elements for processing. When low resolution is detected, the unit executes the conversion into multi-value using an area of 11.times.
    Type: Grant
    Filed: November 18, 1996
    Date of Patent: October 10, 2000
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Hiroshi Sekine, Kunikazu Ueno
  • Patent number: 6129347
    Abstract: A substrate feeding system, and printers that use such feeding systems, that includes a feed roll and a retard roll that form a nip, a nudger roll for advancing a substrate from a substrate stack toward the nip, and an entrance guide between the nudger roll and the nip. The entrance guide has a contact surface that forms an angle of more than 100.degree. with the direction of motion of the substrate. The entrance guide further including a top section over which the substrate moves as it advances into the nip. The entrance guide is beneficially pivotally mounted such that when a retard roll is removed the entrance guide pivots out of the way, and such that when a retard roll is in place the entrance guide moves into position.
    Type: Grant
    Filed: February 22, 1999
    Date of Patent: October 10, 2000
    Assignee: Xerox Corporation
    Inventors: Janice S. Brooks, John D. Gramlich, Thomas P. Lambert, Dean Thomas, Michael J. Diehl, James T. Kayko, Gregory N. Carpenter
  • Patent number: 6130701
    Abstract: A scanner apparatus and an image recording apparatus are provided with an array-like light source. A plurality of laser beams emitted from a semiconductor laser array are collected into a limited space region by a field lens, and an optical element integral with an image forming lens and a Fourier conversion element is arranged in the space region to form the plurality of laser beams into beams having a light intensity distribution of a Bessel-Gaussian type on a photosensitive drum.
    Type: Grant
    Filed: August 14, 1997
    Date of Patent: October 10, 2000
    Assignee: Fuji Xerox Co., Ltd.
    Inventor: Masao Ito
  • Patent number: 6130693
    Abstract: A printhead and method of fabrication thereof provides that the printhead reservoir has substantially the same cross-sectional ink flow area as the total cross-sectional area of the plurality of individual ink channels which interconnect the reservoir with the printhead nozzles. Since the flow area of the reservoir is substantially matched to the total flow area of the channels, the ink capacity of the reservoir is relatively low and the flow rate therethrough during a printing operation is relatively high. The small capacity of reservoir, together with the high ink flow rate therethrough, assures short ink residency time during printing, so that any exsolved air bubbles in the ink are swept away with subsequent ink droplet ejections during a printing operation and thus prevents any air bubbles present from coalescing into larger bubbles which can cause print quality defects.
    Type: Grant
    Filed: January 8, 1998
    Date of Patent: October 10, 2000
    Assignee: Xerox Corporation
    Inventors: Dale R. Ims, Michael P. O'Horo, Donald J. Drake, Brian S. Hilton
  • Patent number: 6130732
    Abstract: A paper-white reflective display that has improved photopic white reflectance, a high contrast, a lack of haze or opaqueness when viewed from various viewing angles and lower drive voltages. The paper-white reflective display includes first and second substrates, a plurality of groups of liquid crystal and polymer layers located between the first and second substrates, each of the plurality of groups of liquid crystal and polymer layers being reflective of different wavelengths of light and a voltage source connected between the first and second substrates that selectively applies a voltage to all of the liquid crystal and polymer layers.
    Type: Grant
    Filed: January 31, 1997
    Date of Patent: October 10, 2000
    Assignee: Xerox Corporation
    Inventors: Greg P. Crawford, Thomas G. Fiske, Louis D. Silverstein
  • Patent number: 6130760
    Abstract: A transmission job originating station for controlling transmission of job information, based on the processing of a print job in a printing system, is provided. The control system includes a document generating subsystem for providing at least a portion of the print job to be delivered to a print machine and a user interface for programming a set of information including one or more confirmation destinations with each confirmation destination being disposed remotely of the transmission job originating station. The transmission job originating station further includes a control subsystem which, in response to the processing of at least a portion of the print job at the printing machine, reads the set of information and determines each confirmation destination, programmed with the user interface, to which the job information is to be transmitted.
    Type: Grant
    Filed: July 14, 1998
    Date of Patent: October 10, 2000
    Assignee: Xerox Corporation
    Inventor: Michael J. Nickerson
  • Patent number: 6130021
    Abstract: A process involving the mixing of a latex emulsion containing resin and a surfactant with a colorant dispersion containing a nonionic surfactant, and a polymeric additive and adjusting the resulting mixture pH to less than about 4 by the addition of an acid and thereafter heating at a temperature below about, or equal to about the glass transition temperature (Tg) of the latex resin, subsequently heating at a temperature above about, or about equal to the Tg of the latex resin, cooling to about room temperature, and isolating the toner product.
    Type: Grant
    Filed: April 13, 1998
    Date of Patent: October 10, 2000
    Assignee: Xerox Corporation
    Inventors: Raj D. Patel, Michael A. Hopper
  • Patent number: 6129457
    Abstract: A system for providing an output from a digital printing apparatus which is of higher resolution than the native resolution of the original image data. For a given center pixel area, image data corresponding to pixel areas generally neighboring the center pixel area are attempted to be matched to various templates which are consistent with curved lines in which resolution enhancement of the center pixel would be desirable. In a second stage of template matching, a second set of image data, corresponding to pixel areas further away from the center pixel than the first set of pixel areas, is also attempted to be matched to templates. The second stage of template matching helps to avoid resolution enhancement of image data which is related to a halftone image.
    Type: Grant
    Filed: July 1, 1997
    Date of Patent: October 10, 2000
    Assignee: Xerox Corporation
    Inventors: Robert R. Thompson, Jr., Farhad D. Rostamian, Louis D. Mailloux, Cheryl A. Pence, Rosario A. Bracco, Cathleen J. Raker, Sue K. Lam, George L. Harer, Hung M. Pham, Daniel D. Truong
  • Patent number: 6129216
    Abstract: An article including; a support member with a plurality of apertures therethrough; and a plurality of gate members attached by at least one end to at least one side of the support member, wherein each gate member is situated in close proximity to at least one of the apertures.
    Type: Grant
    Filed: May 13, 1999
    Date of Patent: October 10, 2000
    Assignee: Xerox Corporation
    Inventors: Judith M. Vandewinckel, Gerardo Leute
  • Patent number: 6131002
    Abstract: A technique for detecting the toner solids concentration of a liquid toner uses electrostatic sensing and avoids reliance on optical transmission paths, which tend to clog and lead to undertoning or overtoning. The toner solids concentration is instead detected by measuring the residual electric potential of a developed area on an image bearing member. The residual electric potential has been discovered to correlate well with the toner solids concentration.
    Type: Grant
    Filed: March 31, 1999
    Date of Patent: October 10, 2000
    Assignee: Xerox Corporation
    Inventors: George A. Gibson, Robert M. Simms
  • Patent number: 6128465
    Abstract: An image reproduction machine is provided, and includes a paper substrate feeding assembly having a substrate path for feeding a portion of paper substrate; a moveable image bearing member having an imaging path; toner image forming devices along the imaging path for forming a toner image on the image bearing member; an image transfer station along the substrate path for transferring the toner image onto a portion of paper substrate fed by the paper substrate feeding assembly; and a toner image fusing assembly having heat and pressure devices for heating and fusing the toner image onto the portion of paper substrate. The reproduction machine importantly includes a blank paper substrate preconditioning apparatus (PSPA) for changing and stabilizing a size of the portion of paper substrate before it is fed to the image transfer station.
    Type: Grant
    Filed: October 4, 1999
    Date of Patent: October 3, 2000
    Assignee: Xerox Corporation
    Inventor: Vittorio Castelli