Patents by Inventor Robert E. Hildebrand

Robert E. Hildebrand 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: 7706722
    Abstract: A method and apparatus for shifting a photoreceptor in a cross-process direction to reduce the formation of a paper edge ghost on the photoreceptor. The shifting can occur continuously or in steps.
    Type: Grant
    Filed: December 10, 2007
    Date of Patent: April 27, 2010
    Assignee: Xerox Corporation
    Inventors: Robert E. Hildebrand, Michael J. Martin
  • Publication number: 20090148183
    Abstract: A method and apparatus for shifting a photoreceptor in a cross-process direction to reduce the formation of a paper edge ghost on the photoreceptor. The shifting can occur continuously or in steps.
    Type: Application
    Filed: December 10, 2007
    Publication date: June 11, 2009
    Applicant: XEROX CORPORATION
    Inventors: Robert E. Hildebrand, Michael J. Martin
  • Patent number: 7218886
    Abstract: A method for removing a residue, such as lateral charge migration (LCM) film, from an imaging member includes contacting at least a portion of the imaging member with a wash liquid capable of removing the residue. The wash liquid containing the residue is then removed, for example, by applying an absorbent material such as a toner, to the contacted portion of the imaging member.
    Type: Grant
    Filed: July 20, 2004
    Date of Patent: May 15, 2007
    Assignee: Xerox Corporation
    Inventors: Robert E. Hildebrand, Joseph M. Wing, Randall C. Ryon, John R. Lambie, Moritz P. Wagner, Huoy-Jen Yuh, Douglas A. Lundy, Michael J. Turan, Eric Bonn
  • Patent number: 7076193
    Abstract: An apparatus for developing in a development zone a latent image recorded on a surface, including a housing defining a chamber storing at least a supply of toner therein; a donor member disposed of at least partially in the chamber of the housing and spaced from the surface, the donor member being adapted to rotate about a longitudinal axis to transport toner to the development zone in a region opposed from the surface; and a wire assembly module mounted the development zone and extending in a direction transverse to the longitudinal axis, the wire assembly module including a wire and a drive system for translating portions of the wire in the development zone, and power supply for electrically biasing the wire to detach toner from the donor member so as to form a toner powder cloud in the development zone with detached toner from the toner cloud developing the latent image.
    Type: Grant
    Filed: May 26, 2004
    Date of Patent: July 11, 2006
    Assignee: Xerox Corporation
    Inventors: Joseph M. Wing, Scott Douglas Berner, legal representative, Ron E. Dufort, Robert E. Hildebrand, Michael J. Martin, Barbara J. Schaeffer, James J. Spence, Douglas G. Berner, deceased
  • Publication number: 20050265754
    Abstract: An apparatus for developing in a development zone a latent image recorded on a surface, including a housing defining a chamber storing at least a supply of toner therein; a donor member disposed of at least partially in the chamber of the housing and spaced from the surface, the donor member being adapted to rotate about a longitudinal axis to transport toner to the development zone in a region opposed from the surface; and a wire assembly module mounted the development zone and extending in a direction transverse to the longitudinal axis, the wire assembly module including a wire and a drive system for translating portions of the wire in the development zone, and power supply for electrically biasing the wire to detach toner from the donor member so as to form a toner powder cloud in the development zone with detached toner from the toner cloud developing the latent image.
    Type: Application
    Filed: May 26, 2004
    Publication date: December 1, 2005
    Inventors: Joseph Wing, Douglas G. Berner, Scott Douglas Berner, Ron E. Dufort, Robert E. Hildebrand, Michael J. Martin, Barbara J. Schaeffer, James J. Spence
  • Patent number: 6468465
    Abstract: In a method of plastic injection molding of plastic parts with a critical external dimensional accuracy, in particular plastic gears, the plastic molding material is first injected into the mold, and then gas is injected under pressure into the mold to reduce shrinkage of the plastic material away from the mold surface, forming a gas bubble in the plastic molding material in the mold. Then after cooling of that first injected plastic, a separate, secondary injection of more of the same plastic material under pressure into the gas bubble, in the mold (before removing the plastic part from the mold), provides increased strength and a uniform rotational moment of inertia of the gear.
    Type: Grant
    Filed: April 17, 2000
    Date of Patent: October 22, 2002
    Assignee: Xerox Corporation
    Inventor: Robert E. Hildebrand
  • Patent number: 6289586
    Abstract: Manufacturing a drive system with a mating gear set with substantially reduced gear axis misalignment drive motion non-uniformity error with half-crowned gear teeth, crowned on only one side, to allow for simple and low cost gear molding, but with the mating gears mounted to oppositely mesh their respectively half-crowned sides. The amount of crowning may be in the range of approximately 75-100 microns.
    Type: Grant
    Filed: March 17, 2000
    Date of Patent: September 18, 2001
    Assignee: Xerox Corporation
    Inventors: James M. Casella, Robert E. Hildebrand, Anthony G. Poletto
  • Patent number: 6253047
    Abstract: In a printing apparatus with a component such as an imaging surface having critical drive motion uniformity, there is provide a drive system with at least one meshing pair of rotatable first and second drive gears, with at least one gear having gear teeth with a crowned outer engagement edge, with crowning sufficient to substantially increase the drive motion uniformity of the drive system in spite of alignment variations of said first and second gear axes of gear rotation. Preferably each meshing gear has all its gear teeth only half-crowned, on only one side, to allow for simple and low cost gear molding, but the gears are mounted to oppositely mesh their respectively half-crowned sides. The amount of crowning may be in the range of approximately 75-100 microns.
    Type: Grant
    Filed: March 8, 2000
    Date of Patent: June 26, 2001
    Assignee: Xerox Corporation
    Inventors: Robert E. Hildebrand, James M. Casella, Anand Narayan, Karl Sweitzer, Anthony G. Poletto