Patents by Inventor Joy L. Longhenry

Joy L. Longhenry 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).

  • Insulated journals for a donor roll
    Patent number: 6674986
    Abstract: A donor structure for developing toner images to an image receiving surface, said structure including a core structure; end caps including journal portions attached to said core structure;a bearing for operatively supporting said donor structure in an imaging device; and electrically isolating coatings carried by said journal portions, said electrically isolating coatings being interposed between said journal portions and said bearings.
    Type: Grant
    Filed: October 15, 2002
    Date of Patent: January 6, 2004
    Assignee: Xerox Corporation
    Inventors: Timothy R. Jaskowiak, Joy L. Longhenry, Eugene J. Manno, Scott Martin, William R. Klimley
  • ALLOYED DONOR ROLL COATING
    Publication number: 20030086729
    Abstract: A toner donor roll for use in a development apparatus of a electrophotographic apparatus is disclosed. The donor roll includes a conductive core of a ceramic outer coating over the conductive core, the ceramic coating formed from thermal spraying a single homogeneous powder consisting of particles each of which contains a specific ratio of pure alumina and pure titania held together with an organic binder.
    Type: Application
    Filed: November 5, 2001
    Publication date: May 8, 2003
    Inventors: Joy L. Longhenry, Michelle L. Schlafer
  • Alloyed donor roll coating
    Patent number: 6560432
    Abstract: A toner donor roll for use in a development apparatus of an electrophotographic apparatus is disclosed. The donor roll includes a conductive core of a ceramic outer coating over the conductive core, the ceramic coating formed from thermal spraying a single homogeneous powder consisting of particles each of which contains a specific ratio of pure alumina and pure titania held together with an organic binder.
    Type: Grant
    Filed: November 5, 2001
    Date of Patent: May 6, 2003
    Assignee: Xerox Corporation
    Inventors: Joy L. Longhenry, Michelle L. Schlafer
  • Roll having zirconia coating
    Patent number: 6398702
    Abstract: Rolls include a core and a stabilized zirconia-containing outer coating on the core. The outer coating can also include titania. The outer coatings have smooth finishes and controlled electrical properties. The outer coatings of the rolls can be finished to a highly smooth finish in reduced cycle times. The rolls can be used in electrostatographic imaging apparatus as charge donor rolls.
    Type: Grant
    Filed: February 14, 2000
    Date of Patent: June 4, 2002
    Assignee: Xerox Corporation
    Inventors: Michelle L. Schlafer, Ann M. Kazakos, Joy L. Longhenry, Tim R. Jaskowiak
  • Donor rolls and methods of making donor rolls
    Patent number: 6327452
    Abstract: A roller includes a core and a ceramic coating formed over the core. The roller has a composite runout of less than 20 &mgr;m and a total indicator reading runout of less than 7 &mgr;m. The ceramic coating has a smooth finish and has controlled electric properties. This roller can be used as a donor roller for transporting toner to a photoconductive member so as to achieve high-quality image development.
    Type: Grant
    Filed: February 14, 2000
    Date of Patent: December 4, 2001
    Assignee: Xerox Corporation
    Inventors: Timothy R. Jaskowiak, Ann M. Kazakos, Joy L. Longhenry, Michelle L. Schlafer, Grethel K. Mulroy, Thomas L. DiGravio, Kevin H. Taft, Frederick B. White, Mark Gelin
  • Charging roller and processes thereof
    Patent number: 6226483
    Abstract: An article including a cylindrical roller core; and a titanium dioxide ceramic layer bonded to the exterior of the cylindrical core.
    Type: Grant
    Filed: July 30, 1999
    Date of Patent: May 1, 2001
    Assignee: Xerox Corporation
    Inventors: Ann M. Kazakos, Joy L. Longhenry, Michelle L. Schlafer, Michael J. Duggan