Patents by Inventor Christopher R. Curtis

Christopher R. Curtis 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).

  • Reduction of intercolor bleeding in liquid ink printing
    Patent number: 6270186
    Abstract: The present invention provides a method for processing color image data for printing on an inkjet printer to reduce intercolor bleeding in an image recorded on a receiving medium. The method receives a target pixel comprising multiple separation pixels, wherein each separation is associated with a separate color plane and has at least three states, a first state corresponding to depositing no ink drops, a second state corresponding to depositing one ink drop, and a third state corresponding to depositing more than one ink drop. The method further includes determining if the target pixel is within a black border region near a black/color interface or within a color border region near a black/color interface.
    Type: Grant
    Filed: December 3, 1999
    Date of Patent: August 7, 2001
    Assignee: Xerox Corporation
    Inventors: Glenn K. Smith, Peter A. Torpey, Virgil Joseph Hull, Christopher R. Curtis
  • Maintaining black edge quality in liquid ink printing
    Patent number: 6183062
    Abstract: The present invention provides a method for processing color image data to maintain edge quality in an image recorded on a receiving medium. The method includes receiving a target pixel comprising multiple separation pixels, each separation being associated with a separate color plane and having at least three states, a first state corresponding to depositing no ink, a second state corresponding to depositing one ink drop, and a third state corresponding to depositing more than one ink drop; determining if the target pixel is within a black border region near a black/non-printed interface; and if so, setting the separation pixel associated with a black color plane to a selected black pixel state.
    Type: Grant
    Filed: December 3, 1999
    Date of Patent: February 6, 2001
    Assignee: Xerox Corporation
    Inventors: Christopher R. Curtis, Glenn K. Smith, Virgil Joseph Hull, Peter A. Torpey