Patents by Inventor John Albert Wright

John Albert Wright has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 8746835
    Abstract: A method evaluates printhead position in a staggered full width array (SFWA) printhead assembly. The method includes selecting a first printhead configuration for printing a first test pattern on an image receiving member, generating positional correction data for roll and stitch displacements obtained from captured image data of the first test pattern, comparing the positional correction data to at least one threshold in a displacement range, and operating at least one printhead actuator in accordance with the positional correction data in response to the positional correction data exceeding at least one predetermined threshold in the displacement range.
    Type: Grant
    Filed: March 5, 2009
    Date of Patent: June 10, 2014
    Assignee: Xerox Corporation
    Inventors: John Albert Wright, Stan Alan Spencer, Cary Eric Sjolander
  • Patent number: 8469485
    Abstract: A system evaluates image quality in an image generating system. The system includes a test pattern generator configured to generate an image with an image generating system, an image capture device configured to generate a digital signal corresponding to the generated test pattern, an image evaluator configured to process the digital signal to detect and correct anomalies detected in the generated test pattern, a plurality of calibration tools, each calibration tool being comprised of at least one test pattern, at least one set of detection criteria, and at least one set of anomaly correction parameters, and a controller configured to select the calibration tools for operation of the test pattern generator and the image evaluator in accordance with a predetermined sequence that attenuates changes arising from application of correction parameters of one calibration tool upon a later selected calibration tool.
    Type: Grant
    Filed: January 23, 2012
    Date of Patent: June 25, 2013
    Assignee: Xerox Corporation
    Inventors: Bhaskar T. Ramakrishnan, Andrew S. Yeh, Mary Lynne Morrow, Ernest I. Esplin, Pieter John Ganzer, John Albert Wright, Brent Edward Fleming
  • Publication number: 20120120144
    Abstract: A system evaluates image quality in an image generating system. The system includes a test pattern generator configured to generate an image with an image generating system, an image capture device configured to generate a digital signal corresponding to the generated test pattern, an image evaluator configured to process the digital signal to detect and correct anomalies detected in the generated test pattern, a plurality of calibration tools, each calibration tool being comprised of at least one test pattern, at least one set of detection criteria, and at least one set of anomaly correction parameters, and a controller configured to select the calibration tools for operation of the test pattern generator and the image evaluator in accordance with a predetermined sequence that attenuates changes arising from application of correction parameters of one calibration tool upon a later selected calibration tool.
    Type: Application
    Filed: January 23, 2012
    Publication date: May 17, 2012
    Applicant: XEROX CORPORATION
    Inventors: Bhaskar T. Ramakrishnan, Andrew S. Yeh, Mary Lynne Morrow, Ernest I. Esplin, Pieter John Ganzer, John Albert Wright, Brent Edward Fleming
  • Patent number: 8132885
    Abstract: A system evaluates image quality in an image generating system in a manner that accounts for the interaction of the calibration tools used to evaluate and correct image quality in the image generating system.
    Type: Grant
    Filed: March 10, 2009
    Date of Patent: March 13, 2012
    Assignee: Xerox Corporation
    Inventors: Bhaskar T. Ramakrishnan, Andrew S. Yeh, Mary Lynne Morrow, Ernest I. Esplin, Pieter John Ganzer, John Albert Wright, Brent Edward Fleming
  • Patent number: 7798624
    Abstract: A solid ink delivery system for use with a plurality of solid ink sticks for use in solid ink printers is provided. The delivery system includes a guide for guiding the solid ink sticks in a prescribed path and a drive member for simultaneous engagement with a plurality of the solid ink sticks and extending along a portion of the prescribed path of the guide.
    Type: Grant
    Filed: November 21, 2006
    Date of Patent: September 21, 2010
    Assignee: Xerox Corporation
    Inventors: Michael Alan Fairchild, Ernest Isreal Esplin, John Albert Wright
  • Publication number: 20100231635
    Abstract: A system evaluates image quality in an image generating system in a manner that accounts for the interaction of the calibration tools used to evaluate and correct image quality in the image generating system.
    Type: Application
    Filed: March 10, 2009
    Publication date: September 16, 2010
    Applicant: XEROX CORPORATION
    Inventors: Bhaskar T. Ramakrishnan, Andrew S. Yeh, Mary Lynne Morrow, Ernest I. Esplin, Pieter John Ganzer, John Albert Wright, Brent Edward Fleming
  • Publication number: 20100225691
    Abstract: A method evaluates printhead position in a staggered full width array (SFWA) printhead assembly. The method includes selecting a first printhead configuration for printing a first test pattern on an image receiving member, generating positional correction data for roll and stitch displacements obtained from captured image data of the first test pattern, comparing the positional correction data to at least one threshold in a displacement range, and operating at least one printhead actuator in accordance with the positional correction data in response to the positional correction data exceeding at least one predetermined threshold in the displacement range.
    Type: Application
    Filed: March 5, 2009
    Publication date: September 9, 2010
    Applicant: XEROX CORPORATION
    Inventors: John Albert Wright, Stan Alan Spencer, Cary Eric Sjolander
  • Publication number: 20080117267
    Abstract: A solid ink delivery system for use with a plurality of solid ink sticks for use in solid ink printers is provided. The delivery system includes a guide for guiding the solid ink sticks in a prescribed path and a drive member for simultaneous engagement with a plurality of the solid ink sticks and extending along a portion of the prescribed path of the guide.
    Type: Application
    Filed: November 21, 2006
    Publication date: May 22, 2008
    Applicant: Xerox Corporation
    Inventors: Michael Alan Fairchild, Ernest Isreal Esplin, John Albert Wright