Patents by Inventor Walter Sean Harris

Walter Sean Harris 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).

  • Publication number: 20190114517
    Abstract: A method of correcting print banding in a printer, including initiating the banding correction process, generating prints with various levels of banding based on different levels of voltages applied to the array of jets, receiving an input from the user selecting the preferred print, and adjusting voltage levels applied to jets corresponding to the preferred print.
    Type: Application
    Filed: October 17, 2017
    Publication date: April 18, 2019
    Inventors: DOUGLAS DEAN DARLING, ERIC HYDE, WALTER SEAN HARRIS, BRIAN J. DANIELS, REID W. GUNNELL, NASSER ALAVIZADEH, LISA M. SCHMIDT, ROBERT MARK JACOBS
  • Patent number: 9849689
    Abstract: A method of filling a print head includes drawing a vapor into an empty print head to displace any air in the print head and filling the print head with ink. A method of filling a print head includes connecting a print head to a vacuum pump using a first valve, to a liquid supply using a second valve, and to an ink supply using a third valve, opening the first and second valves, applying vacuum to the print head and liquid supply using the vacuum pump, causing the liquid to generate a vapor that moves into the print head, closing the first valve and the second valve, and opening the third valve to move ink into the print head.
    Type: Grant
    Filed: October 24, 2016
    Date of Patent: December 26, 2017
    Assignee: XEROX CORPORATION
    Inventors: Reid W. Gunnell, Nasser Alavizadeh, Douglas Dean Darling, Walter Sean Harris, Megan Schaffer, David L. Knierim
  • Patent number: 8882223
    Abstract: A method of indirect printing has been developed to split printing of an imaging revolution on the image drum. A portion of the image is printed on the drum corresponding from an intermediate edge to a trailing edge of image data, and subsequently a remaining portion is printed corresponding from a leading edge to the intermediate edge of the image data. Splitting the image revolution enables the imaging to begin earlier in the drum revolution and decreases the total number of revolutions needed to complete a printed page, increasing printer throughput.
    Type: Grant
    Filed: July 31, 2012
    Date of Patent: November 11, 2014
    Assignee: Xerox Corporation
    Inventors: Walter Sean Harris, Joel Chan
  • Patent number: 8646893
    Abstract: A printer includes an image drum temperature regulation system that helps reduce thermal gradients on the image drum surface. The image drum temperature regulation system includes a feedback controller and a feed-forward controller. The image drum temperature regulation system operates the heaters and fan of the image drum with reference to a temperature difference between actual temperature of the image drum and a temperature setpoint and to the thermal effect of ejecting an ink image onto the image drum.
    Type: Grant
    Filed: June 19, 2012
    Date of Patent: February 11, 2014
    Assignee: Xerox Corporation
    Inventors: Palghat S. Ramesh, Bruce Earl Thayer, David A. VanKouwenberg, Rachael L. McGrath, Trevor J. Snyder, Walter Sean Harris
  • Publication number: 20140035980
    Abstract: A method of indirect printing has been developed to split printing of an imaging revolution on the image drum. A portion of the image is printed on the drum corresponding from an intermediate edge to a trailing edge of image data, and subsequently a remaining portion is printed corresponding from a leading edge to the intermediate edge of the image data. Splitting the image revolution enables the imaging to begin earlier in the drum revolution and decreases the total number of revolutions needed to complete a printed page, increasing printer throughput.
    Type: Application
    Filed: July 31, 2012
    Publication date: February 6, 2014
    Applicant: XEROX CORPORATION
    Inventors: Walter Sean Harris, Joel Chan
  • Publication number: 20130335476
    Abstract: A printer includes an image drum temperature regulation system that helps reduce thermal gradients on the image drum surface. The image drum temperature regulation system includes a feedback controller and a feed-forward controller. The image drum temperature regulation system operates the heaters and fan of the image drum with reference to a temperature difference between actual temperature of the image drum and a temperature setpoint and to the thermal effect of ejecting an ink image onto the image drum.
    Type: Application
    Filed: June 19, 2012
    Publication date: December 19, 2013
    Applicant: XEROX CORPORATION
    Inventors: Palghat S. Ramesh, Bruce Earl Thayer, David A. VanKouwenberg, Rachael L. McGrath, Trevor Snyder, Walter Sean Harris
  • Patent number: 8292392
    Abstract: An inkjet printer operates to produce a print with at least one component operating at less than a normal operating parameter. The printer identifies an image density for an image to be printed and operates the printer with operational parameters different than normal operational parameters to enable printing operations before all of the components in the printer reach their operational parameters.
    Type: Grant
    Filed: July 15, 2010
    Date of Patent: October 23, 2012
    Assignee: Xerox Corporation
    Inventors: Trevor J. Snyder, Walter Sean Harris
  • Publication number: 20120013663
    Abstract: An inkjet printer operates to produce a print with at least one component operating at less than a normal operating parameter. The printer identifies an image density for an image to be printed and operates the printer with operational parameters different than normal operational parameters to enable printing operations before all of the components in the printer reach their operational parameters.
    Type: Application
    Filed: July 15, 2010
    Publication date: January 19, 2012
    Applicant: XEROX CORPORATION
    Inventors: Trevor James Snyder, Walter Sean Harris
  • Patent number: 8075129
    Abstract: A method adjusts operation of a printer in accordance with an analysis of image content used to generate printed images. The method includes measuring image content of a first print image, comparing the measured image content to a predetermined threshold, and altering a print process parameter to adjust operation of a printer component in response to the measured image content exceeding the threshold.
    Type: Grant
    Filed: March 31, 2009
    Date of Patent: December 13, 2011
    Assignee: Xerox Corporation
    Inventors: Jeffrey Russell Kohne, Trevor James Snyder, Audrey Ann Lester, Brent E. Fleming, Paul L. McConville, Walter Sean Harris, Brent R. Jones
  • Patent number: 7971987
    Abstract: A heated drum assembly enables improved thermal control of a hollow drum in the heated drum assembly by integrating thermal sensing devices in the assembly.
    Type: Grant
    Filed: February 29, 2008
    Date of Patent: July 5, 2011
    Assignee: Xerox Corporation
    Inventors: Amin M. Godil, Larry E. Hindman, Isaac S. Frazier, Walter Sean Harris, William Bruce Weaver
  • Patent number: 7859691
    Abstract: A process enables a user to alter all the operational modes of a printer through a single parameter selection. The process includes selecting a group of operational parameter sets for a print process, the group selection being made with reference to one of an operational mode and a characteristic parameter; and selecting a set of operational parameters from the selected group of operational parameter sets, the set selection being made with reference to the other of the operational mode and the characteristic parameter.
    Type: Grant
    Filed: June 2, 2006
    Date of Patent: December 28, 2010
    Assignee: Xerox Corporation
    Inventors: Trevor James Snyder, Cheng-Sung (Joel) Chan, Walter Sean Harris, Paul Jeremy Woodward, Shell Thomas Haffner, James B. Campbell
  • Publication number: 20100245447
    Abstract: A method adjusts operation of a printer in accordance with an analysis of image content used to generate printed images. The method includes measuring image content of a first print image, comparing the measured image content to a predetermined threshold, and altering a print process parameter to adjust operation of a printer component in response to the measured image content exceeding the threshold.
    Type: Application
    Filed: March 31, 2009
    Publication date: September 30, 2010
    Applicant: XEROX CORPORATION
    Inventors: Jeffrey Russell Kohne, Trevor James Snyder, Audrey Ann Lester, Brent E. Fleming, Paul L. McConville, Walter Sean Harris, Brent R. Jones
  • Publication number: 20090219328
    Abstract: A heated drum assembly enables improved thermal control of a hollow drum in the heated drum assembly by integrating thermal sensing devices in the assembly.
    Type: Application
    Filed: February 29, 2008
    Publication date: September 3, 2009
    Applicant: XEROX CORPORATION
    Inventors: Amin M. Godil, Larry E. Hindman, Isaac S. Frazier, Walter Sean Harris
  • Publication number: 20070279665
    Abstract: A process enables a user to alter all the operational modes of a printer through a single parameter selection. The process includes selecting a group of operational parameter sets for a print process, the group selection being made with reference to one of an operational mode and a characteristic parameter; and selecting a set of operational parameters from the selected group of operational parameter sets, the set selection being made with reference to the other of the operational mode and the characteristic parameter.
    Type: Application
    Filed: June 2, 2006
    Publication date: December 6, 2007
    Inventors: Trevor James Snyder, Cheng-Sung (Joel) Chan, Walter Sean Harris, Paul Jeremy Woodward, Shell Thomas Haffner, James B. Campbell