Patents by Inventor Richard W. Bigelow

Richard W. Bigelow 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: 5582949
    Abstract: A process for coating flexible belt seams including providing a flexible belt having an outwardly facing surface and a welded seam, forming a smooth liquid coating on the welded seam, the liquid coating comprising a film forming polymer and a fugitive liquid carrier in which the belt surface is substantially insoluble, and removing the fugitive liquid carrier to form a smooth solid coating on the seam.
    Type: Grant
    Filed: December 27, 1990
    Date of Patent: December 10, 1996
    Assignee: Xerox Corporation
    Inventors: Richard W. Bigelow, Jeffrey W. Drawe, Richard L. Schank
  • Patent number: 5436713
    Abstract: A cleaning apparatus for removing residual developer material remaining on a surface of a printing machine is provided. The cleaning apparatus includes a movable cleaning brush having bristles. The brush is positioned adjacent to the surface so that as the movable brush is moved, the bristles contact the surface and the residual developer material is removed therefrom. A detoning device is positioned adjacent to the movable cleaning brush in a manner that permits the bristles to contact the detoning device as the movable cleaning brush is moved. The detoning device includes a plurality of hook-like and/or teeth-like members which dislodge the residual developer material from the bristles as they contact the hook-like members.
    Type: Grant
    Filed: August 20, 1993
    Date of Patent: July 25, 1995
    Assignee: Xerox Corporation
    Inventors: Richard W. Bigelow, Douglas A. Lundy
  • Patent number: 5391455
    Abstract: Additives contained in developer material used for developing latent electrostatic images on a charge retentive surface are intercepted prior to the developer material being moved into a development zone intermediate to the developer housing containing the developer material and the imaging surface. The additives removed are returned to the developer material for admixing therewith.
    Type: Grant
    Filed: November 22, 1993
    Date of Patent: February 21, 1995
    Assignee: Xerox Corporation
    Inventor: Richard W. Bigelow
  • Patent number: 5308732
    Abstract: A process for extending the life of magnetic brush cleaners comprising carrier particles, a magnetic roll, and biased detone roll with a scraper by treating said carrier particles with a metal oxide.
    Type: Grant
    Filed: May 10, 1993
    Date of Patent: May 3, 1994
    Assignee: Xerox Corporation
    Inventors: Richard W. Bigelow, Grace T. Brewington, Kristen M. Natale, Richard P. Germain
  • Patent number: 5281502
    Abstract: Disclosed is a process for forming two-color images which comprises (1) charging an imaging member in an imaging apparatus; (2) creating on the member a latent image comprising areas of high, intermediate, and low potential; (3) developing the low areas of potential with a colored developer comprising a colored first toner comprising a polymer resin selected from the group consisting of styrene-butadiene copolymers, styrene-acrylate copolymers, styrene-methacrylate copolymers, and mixtures thereof, a blue first colored pigment of the formula C.sub.32 H.sub.16 N.sub.
    Type: Grant
    Filed: June 8, 1992
    Date of Patent: January 25, 1994
    Assignee: Xerox Corporation
    Inventors: Grace T. Brewington, Richard W. Bigelow, Robert W. Anderson, Paul C. Julien, Susan J. Kremer
  • Patent number: 5241350
    Abstract: A cleaning blade holder apparatus that has at least one end clamping mechanism on one side of the cleaning blade holder body. The end clamping mechanism is connected to the blade holder body by an adjustable spacer (e.g. springs) and set screws. The adjustable spacer spring loads the end clamp against the holder body so that when the screws are withdrawn the coupled blade holder body and end clamp expand to stretch the blade laterally. This places the blade in tension and creates uniform contact between the imaging surface and the cleaning blade.
    Type: Grant
    Filed: August 31, 1992
    Date of Patent: August 31, 1993
    Assignee: Xerox Corporation
    Inventor: Richard W. Bigelow
  • Patent number: 5238769
    Abstract: A process for extending the life of magnetic brush cleaners comprising carrier particles, a magnetic roll, and biased detone roll with a scraper by treating said carrier particles with a metal oxide.
    Type: Grant
    Filed: August 1, 1991
    Date of Patent: August 24, 1993
    Assignee: Xerox Corporation
    Inventors: Richard W. Bigelow, Grace T. Brewington, Kristen M. Natale, Richard P. Germain
  • Patent number: 5162183
    Abstract: A surface layer on an imaging member has a surface roughness which reduces the force necessary for blade cleaning, reduces blade edge truck, reduces blade/substrate friction, inhibits the formation of toner-type deposits on the imaging surface, and/or reduces or eliminates light interference patterns resulting from coherent light, for example, from a raster output scanner.
    Type: Grant
    Filed: May 10, 1991
    Date of Patent: November 10, 1992
    Assignee: Xerox Corporation
    Inventors: Nero R. Lindblad, Richard L. Schank, Richard W. Bigelow, Herbert C. Relyea, Robert E. Trott, Andrew R. Melnyk, Merlin E. Scharfe, Walter F. Leising