Patents by Inventor Michelle K. Morris

Michelle K. Morris 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).

  • Periodic doctor element field reversal in an electrophotographic device
    Patent number: 7366434
    Abstract: A method and apparatus to clear the accumulation of toner particles from a doctor element by periodically reversing a bias field between a doctor element and a developer member. The developer member may be biased to a first electrical potential while the doctor element may be biased to a second electrical potential. The second electrical potential may be higher than the first electrical potential. The doctor element and the developer member may be biased from a single voltage supply and a voltage dividing circuit. A bias reversing circuit may cause the second electrical potential to fall, at least temporarily, below that of the first electrical potential when power from the voltage supply is removed. The bias reversing circuit may also cause the first electrical potential to fall with a longer time constant than that of the second electrical potential when power from the voltage supply is removed.
    Type: Grant
    Filed: September 7, 2005
    Date of Patent: April 29, 2008
    Assignee: Lexmark International, Inc.
    Inventors: Gregory L. Ream, Michelle K. Morris, William A. Menk, Jr.
  • High density foam roll
    Patent number: 6813470
    Abstract: A roll comprising polymeric foam having a density of at least about 6 pounds per cubic foot and a compression force deflection of at least about 2.5 pounds per square inch. The roll may be used in image forming devices, and may be specifically employed as a toner added roll in electrophotographic image forming devices for toner applications.
    Type: Grant
    Filed: July 10, 2003
    Date of Patent: November 2, 2004
    Assignee: Lexmark International, Inc.
    Inventors: Donald L. Elbert, Michelle K. Morris
  • Toner comprising wax and functionalized enhancing agent
    Patent number: 6492083
    Abstract: Toner particulates include a release agent which comprises a functionalized enhancing agent and a wax. The toner particulates may be used to improve dry fuser release and to improve color clarity in overhead transparencies.
    Type: Grant
    Filed: May 11, 2001
    Date of Patent: December 10, 2002
    Assignee: Lexmark International, Inc.
    Inventors: Bryan P. Livengood, Michelle K. Morris, John M. Olson, Jodi P. Walsh, Franklin D. Zartman