Patents by Inventor Jeff Lee Nelson

Jeff Lee Nelson 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).

  • Drop mass calibration method based on drop positional feedback
    Patent number: 8529013
    Abstract: A method compensates for changes in drop mass of drops ejected by ink jets in a printhead of an ink jet imaging device. The method includes identifying an average of differences between drop placement position for ink drops on an image receiving member and default ink drop positions. The average of the differences is used to adjust a parameter of one or more ink jet driving signals in response to the average of the differences being greater than a predetermined threshold.
    Type: Grant
    Filed: November 1, 2011
    Date of Patent: September 10, 2013
    Assignee: Xerox Corporation
    Inventors: Russell J. Watt, Matthew Hudson Dixon, Lisa Marie Schmidt, Jeff Lee Nelson
  • Drop Mass Calibration Method Based on Drop Positional Feedback
    Publication number: 20120044289
    Abstract: A method compensates for changes in drop mass of drops ejected by ink jets in a printhead of an ink jet imaging device. The method comprises identifying an average drop placement position for a printhead with reference to ink drop positions on an image receiving member and adjusting a parameter of one or more ink jet driving signals in response to the average drop placement position being greater than a predetermined threshold.
    Type: Application
    Filed: November 1, 2011
    Publication date: February 23, 2012
    Applicant: XEROX CORPORATION
    Inventors: Russell J. Watt, Matthew Hudson Dixon, Lisa Marie Schmidt, Jeff Lee Nelson
  • Drop mass calibration method based on drop positional feedback
    Patent number: 8057005
    Abstract: A method of compensating for changes in drop mass of drop emitted by at least one ink jet of an ink jet imaging device is provided. The method comprises identifying a drop placement position on an image receiving member of an ink jet imaging device for at least one ink jet of a print head. The identified drop placement position for the at least one ink jet is compared to a default drop placement position for the at least one ink jet to determine a difference in drop placement position. A drive signal for the at least one ink jet is then adjusted in accordance with the difference in drop placement position.
    Type: Grant
    Filed: October 15, 2007
    Date of Patent: November 15, 2011
    Assignee: Xerox Corporation
    Inventors: Russell J. Watt, Matthew Hudson Dixon, Lisa Marie Schmidt, Jeff Lee Nelson
  • Drop mass calibration method based on drop positional feedback
    Publication number: 20090096823
    Abstract: A method of compensating for changes in drop mass of drop emitted by at least one ink jet of an ink jet imaging device is provided. The method comprises identifying a drop placement position on an image receiving member of an ink jet imaging device for at least one ink jet of a print head. The identified drop placement position for the at least one ink jet is compared to a default drop placement position for the at least one ink jet to determine a difference in drop placement position. A drive signal for the at least one ink jet is then adjusted in accordance with the difference in drop placement position.
    Type: Application
    Filed: October 15, 2007
    Publication date: April 16, 2009
    Applicant: Xerox Corporation
    Inventors: Russell J. Watt, Matthew Hudson Dixon, Lisa Marie Schmidt, Jeff Lee Nelson