Patents Assigned to Xerox Corporation
  • Patent number: 7455943
    Abstract: The toner includes emulsion aggregation toner particles of a binder including a non-crosslinked styrene acrylate polymer, at least one colorant, at least one wax, and aluminized silica, wherein an amount of aluminum metal in the toner particles is from about 50 ppm to about 600 ppm. Such toner is able to provide a high level of gloss while maintaining a low minimum fixing temperature. The aluminized silica acts as a coagulant during the emulsion aggregation formation process of the toner.
    Type: Grant
    Filed: October 17, 2005
    Date of Patent: November 25, 2008
    Assignee: Xerox Corporation
    Inventors: Raj D. Patel, Daryl W. Vanbesien, David J. Sanders, Allan K. Chen
  • Patent number: 7457557
    Abstract: A high precision-heat fusing device is provided for heating unfused toner images in an electrostatographic reproducing machine. The high precision-heating and fusing apparatus includes (a) an endless rotatable shell defining an interior and having an exterior surface, a first end, a second end, and an axis for rotation; (b) at least six heating elements each having an end-to-end length and being selectively activatable, and arranged end-to-end in series and parallel to the axis of rotation; (c) at least six temperature sensors for sensing a temperature of the exterior surface at axially spaced apart points; and (d) a controller connected to the at least six heating elements and to the at least six temperature sensors for precisely sensing and controlling the temperature of the exterior surface at each of the axially spaced apart points.
    Type: Grant
    Filed: April 5, 2006
    Date of Patent: November 25, 2008
    Assignee: Xerox Corporation
    Inventors: Bryan J. Roof, Gerald A. Domoto
  • Patent number: 7457015
    Abstract: A method of processing cyan, magenta and yellow color values including half-toning cyan and magenta colors values, and half-toning yellow color values in such a manner that yellow dots tend to be printed next to cyan, magenta or secondary color dots regardless of cyan, magenta, or yellow coverages.
    Type: Grant
    Filed: May 18, 2005
    Date of Patent: November 25, 2008
    Assignee: Xerox Corporation
    Inventors: Trevor J. Snyder, Stephen M. Kroon, Meng Yao, Michael C. Gordon
  • Patent number: 7455291
    Abstract: Embodiment herein being by placing a media sheet into a chamber. The chamber has a bottom, sidewalls, and a movable projection within a lower portion of the chamber. The movable projection has an upper surface and the media sheet can initially rest on the upper surface of the movable projection. The method can optionally perform a first alignment process (using an alignment mechanism) while the media sheet rests on the upper surface of the movable projection. Then, the method can retract the movable projection to allow the media sheet to fall onto the bottom of the chamber. Next, once the media sheet rests against the bottom of the chamber, the method performs a second alignment process, again using the alignment mechanism.
    Type: Grant
    Filed: December 22, 2005
    Date of Patent: November 25, 2008
    Assignee: Xerox Corporation
    Inventors: Robert James Douglas Reeves, Martyn Mitchell, Michael John Gregg, Waleed Nasar
  • Patent number: 7457574
    Abstract: This disclosure provides a printing apparatus and method including a media sheet registration system, a fuser roll assembly and a fuser roll RDS (registration distribution system). The media sheet registration system steers media sheets to alternative target positions to smooth fuser roll edge wear area profiles associated with the RDS and media sheets passing through the fuser roll assembly.
    Type: Grant
    Filed: December 18, 2006
    Date of Patent: November 25, 2008
    Assignee: Xerox Corporation
    Inventors: James J. Spence, Steven M. Russel
  • Patent number: 7457952
    Abstract: An authentication apparatus includes a reading or recording medium equipped with an authentication tag, and a reading and recording drive that includes a transmitter and a coupler chip, wherein the authentication tag and the transmitter are capable of communicating with each other when the reading medium or the recording medium is coupled to the reading and recording drive. An authentication method includes providing a reading medium or a recording medium with an authentication tag, providing a reading and/or recording drive with a transmitter and a communication interface wherein the authentication tag and the transmitter are capable of communicating with each other when the reading medium or recording medium is coupled to the reading and/or recording drive, and authenticating the reading medium or recording medium via a communication between the authentication tag and the transmitter.
    Type: Grant
    Filed: December 16, 2004
    Date of Patent: November 25, 2008
    Assignee: Xerox Corporation
    Inventors: Alberto Rogriguez, Heiko Rommelmann, Scott Bell, Will Phipps, Ron Boucher
  • Patent number: 7455802
    Abstract: A stress/strain relief process for a flexible, multilayered web stock includes providing a multilayered web stock including at least one layer to be treated, the at least one layer to be treated having a coefficient of thermal expansion significantly differing from a coefficient of thermal expansion of another layer; passing the multilayered web stock over and in contact with a first wrinkle-reducing roller that spontaneously creates transverse tension stress in the at least one layer to be treated; heating at least the at least one layer to be treated above a glass transition temperature Tg of the at least one layer to be treated to thereby create a heated portion of the at least one layer to be treated, a portion of the web stock in proximity to the heated portion of the at least one layer to be treated thereby becoming a heated portion of the web stock; inducing curvature in the heated portion of the web stock; and cooling the heated portion of the web stock at said curvature.
    Type: Grant
    Filed: December 23, 2003
    Date of Patent: November 25, 2008
    Assignee: Xerox Corporation
    Inventors: Robert C. U. Yu, John J. Darcy, Michael S. Roetker, Scott Griffin, Felix J. Santana, Satchidanand Mishra
  • Patent number: 7457578
    Abstract: There is disclosed a system for cleaning marking material from a surface portion of a movable photoconductive member. The system includes a first rotatable brush, a blade and a second rotatable brush arranged in sequential order along the movable photoconductive member. The first rotatable brush is for removing a first amount of marking material from the surface portion of the movable photoconductive member as the surface portion of the movable photoconductive member moves past said first rotatable electrostatic brush. The blade, in engaging contact with the movable photoconductive member, is for removing a second amount of marking material from the surface portion of the movable photoconductive member. The second rotatable brush, positioned in interference contact with the movable photoconductive member, is for removing substantially all residual marking material that was not removed by the first rotatable brush and the blade.
    Type: Grant
    Filed: November 20, 2006
    Date of Patent: November 25, 2008
    Assignee: Xerox Corporation
    Inventors: Douglas A. Lundy, D Clay Johnson, Bruce J. Parks, Michael Quoc Lu
  • Patent number: 7458083
    Abstract: Software in a computer which accesses one or more software-intensive devices, such as a digital copier or printer, is organized in a set of layers. A device-dependent layer converts data transferred over various means, such as a modem or network, to a uniform data format. A protocol layer converts data from a particular accessed machine to a set of function calls. A system interface associated with the computer restricts a user of the computer to seeing only a subset of function calls, depending permissions granted to a particular user. The modular architecture of the software enables a system administrator to restrict a user to viewing machine status for a specific set of machines on a network, or limits the user to viewing only a certain set of functionalities from a particular machine.
    Type: Grant
    Filed: August 5, 2003
    Date of Patent: November 25, 2008
    Assignee: Xerox Corporation
    Inventors: Khalid M. Rabb, Barbara E. Malinowski
  • Patent number: 7456424
    Abstract: A thin film transistor composed of a semiconductor layer including an optionally substituted indolocarbazole.
    Type: Grant
    Filed: June 27, 2005
    Date of Patent: November 25, 2008
    Assignee: Xerox Corporation
    Inventors: Yiliang Wu, Beng S. Ong, Yu Qi, Yuning Li
  • Patent number: 7457808
    Abstract: Feature selection is used to determine feature influence for a given categorization decision to identify those features in a categorized document that were important in classifying the document into one or more classes. In one embodiment, model parameters of a categorization model are used to determine the features that contributed to the categorization decision of a document. In another embodiment, the model parameters of the categorization model and the features of the categorized document are used to determine the features that contributed to the categorization decision of a document.
    Type: Grant
    Filed: December 17, 2004
    Date of Patent: November 25, 2008
    Assignee: Xerox Corporation
    Inventors: Eric Gaussier, Cyril Goutte
  • Publication number: 20080285067
    Abstract: Systems and methods for increasing throughput of print jobs in a print shop environment are disclosed. A system may include a plurality of resources, a print job workflow management system that coordinates a flow of print jobs with respect to the plurality of resources, and a processor-readable storage medium in communication with the print job workflow management system. The processor-readable storage medium may contain one or more programming instructions that, when executed, direct the print job workflow management system to receive print job characteristics pertaining to a plurality of print jobs processed in the print shop environment. Data determined based on the received print job characteristics, including a form type utilized in the print shop environment for each job and a print volume associated with each form type, may be provided. The plurality of resources may then be assigned based on the print volume associated with each form type.
    Type: Application
    Filed: May 18, 2007
    Publication date: November 20, 2008
    Applicant: XEROX CORPORATION
    Inventor: Sudhendu Rai
  • Publication number: 20080285068
    Abstract: Methods and systems for assigning a plurality of print jobs in a transaction printing environment are disclosed. A print job workflow management system receives a plurality of print jobs each having a job size and selects a first threshold based on at least the job sizes for the plurality of print jobs. A print job is assigned to a first autonomous cell if the job size for the print job is greater than the first threshold. The print job is assigned to a second autonomous cell if the job size for the print job is less than a second threshold. Otherwise, the print job is assigned to a third autonomous cell.
    Type: Application
    Filed: May 18, 2007
    Publication date: November 20, 2008
    Applicant: XEROX CORPORATION
    Inventor: Sudhendu Rai
  • Publication number: 20080286732
    Abstract: A method of performing hand drawings analysis includes storing a plurality of hand drawing exercises. Each hand drawing exercise may be configured to test an ability to draw a symbol. A record may be stored. The record may include respondent information. One or more hand drawing exercises may be selected and possibly adapted based on the responded information. A response to each selected hand drawing exercise may be received via an optical-reader device. Each response may be evaluated. The record may be updated based on the evaluated responses. Information may be provided based on the evaluated responses.
    Type: Application
    Filed: May 16, 2007
    Publication date: November 20, 2008
    Applicant: XEROX CORPORATION
    Inventors: Kristine Annette German, Robert Michael Lofthus
  • Publication number: 20080285876
    Abstract: An image forming device is provided that facilitates enhanced image on an output image receiving medium based on one or more sensed or user-input characteristics of the output image receiving medium. A very light uniform toner dust layer is distributed over an entire page to be printed (including image and non-image areas), or in intended non-image areas particularly along edges of a lightweight output image receiving medium. A programmable selection of a color or other parameters of toner dusting, from a plurality of choices, is undertaken such that toner presence in non-image areas is not visually perceptible. The system may effectively print over a variety of background colors. An effective and simple user interface provides an option to the user to choose appropriate low perceptibility toner color so that a relatively higher level of the chosen color may be deposited without crossing a perceptibility threshold.
    Type: Application
    Filed: May 16, 2007
    Publication date: November 20, 2008
    Applicant: XEROX CORPORATION
    Inventor: Eliud ROBLES-FLORES
  • Publication number: 20080283654
    Abstract: A printing apparatus, an associated method, and computer program of designing a floating roller in a tensioning system for a closed loop belt comprises inputting an external radius of the floating roller, a measure of elasticity of the belt, a thickness of the belt, a width of the belt, and angles over which the belt contacts the floating roller; and adjusting a mass of the floating roller and a rotational inertia of the floating roller such that the floating roller maintains a constant tension on the closed loop belt.
    Type: Application
    Filed: April 25, 2008
    Publication date: November 20, 2008
    Applicant: XEROX CORPORATION
    Inventor: Ming Yang
  • Publication number: 20080286019
    Abstract: Washers are used for a pressure roll in a fusing system of an electrophotographic system that improve the functionality and durability of the pressure roll. These washers are made up of a rigid ring section having flexible (less rigid) fingers projecting from the inner periphery of the ring. This provides a more uniform pressure to be exerted in the pressure roll and, consequently, a more uniform nip for better handling and fusing.
    Type: Application
    Filed: July 31, 2008
    Publication date: November 20, 2008
    Applicant: XEROX CORPORATION
    Inventors: Paul M. Fromm, Richard C. Benton
  • Patent number: 7452646
    Abstract: A toner having at least one binder, at least one colorant and external additives. The external additives include at least one fluoropolymer. An electrophotographic image forming machine and method includes the toner with at least one fluoropolymer.
    Type: Grant
    Filed: August 8, 2005
    Date of Patent: November 18, 2008
    Assignee: Xerox Corporation
    Inventors: Nan-Xing Hu, Cuong Vong, John F. Graham, Richard P. N. Veregin
  • Patent number: 7454400
    Abstract: A plurality of components are specified to perform a negotiation, where each component is a participant, a coordinator, or both. Each component is provided with a conversion table that maps a set of parameters between invocation patterns instantiated by the participants. Each coordinator is provided with a negotiation graph that it modifies to coordinate its neighborhood of negotiation graphs, and each participant is provided with a negotiation graph that it modifies for each invocation pattern it instantiates. Two message types are sent between components that communicate directly with each other in each neighborhood of negotiation graphs. The two message types are sent between the components to collaboratively mirror their negotiation graphs using their conversion tables in each neighborhood of negotiation graphs so that each participant only views information concerning those aspects in its negotiation graph that relate to the parameters of the invocation patterns it instantiated.
    Type: Grant
    Filed: October 24, 2002
    Date of Patent: November 18, 2008
    Assignee: Xerox Corporation
    Inventors: Jean-Marc Andreoli, Stefania Castellani
  • Patent number: 7453604
    Abstract: Methods and systems used to automatically identify the marking process used for an image on a substrate based on spatial characteristics and/or color of the image. Image types which are classified and identified include continuous tone images and halftone images. Among halftone images separately identified are inkjet images, xerographic images and lithographic images. Locally adaptive image threshold techniques may be used to determine the spatial characteristics of the image.
    Type: Grant
    Filed: June 30, 2003
    Date of Patent: November 18, 2008
    Assignee: Xerox Corporation
    Inventors: Reiner Eschbach, Gaurav Sharma, Shen-ge Wang