Patents by Inventor Robert F. Little

Robert F. Little 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).

  • Blue ink for postage printing
    Patent number: 9447293
    Abstract: A blue ink for postage printing, which contains a blue pigment, a black dye, and an aqueous carrier, wherein the weight ratio of blue pigment to black dye is in the range of 50:1 to 2:1. The blue pigment is a copper phthalocyanine pigment or an anthraquinone pigment, and the black dye is an azo dye.
    Type: Grant
    Filed: June 16, 2010
    Date of Patent: September 20, 2016
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Zeying Ma, Robert F. Little, Peter C. Morris
  • BLUE INK FOR POSTAGE PRINTING
    Publication number: 20130079442
    Abstract: A blue ink for postage printing, which contains a blue pigment, a black dye, and an aqueous carrier, wherein the weight ratio of blue pigment to black dye is in the range of 50:1 to 2:1. The blue pigment is a copper phthalocyanine pigment or an anthraquinone pigment, and the black dye is an azo dye.
    Type: Application
    Filed: June 16, 2010
    Publication date: March 28, 2013
    Applicant: Hewlett-Packard Development Company L.P.
    Inventors: Zeying Ma, Robert F. Little, Peter C. Morris
  • Image-forming device diagnosis
    Patent number: 7543903
    Abstract: A method for diagnosing image-forming devices includes forming a non-diagnostic image on a surface, forming diagnostic marks on the surface using distinct image-forming points and sensing the diagnostic marks.
    Type: Grant
    Filed: May 26, 2004
    Date of Patent: June 9, 2009
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventor: Robert F. Little
  • Unclogging printer nozzles
    Patent number: 7360859
    Abstract: In one embodiment, a method for printing includes selecting a nozzle for printing a pixel, determining a time since the nozzle was last actuated, and, if the time since the nozzle was last actuated exceeds a threshold time, then, before actuating the nozzle to print the pixel, actuating the nozzle a number of actuations corresponding to the time since the nozzle was last actuated.
    Type: Grant
    Filed: January 24, 2005
    Date of Patent: April 22, 2008
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Robert F. Little, Cesar Fernandez Espasa, Santiago Garcia-Reyero Vinas
  • Method of adjusting printing resolution to avoid conditions of poor pen performance in an inkjet printing system, and systems
    Patent number: 7255413
    Abstract: Exemplary embodiments of the invention include methods of adjusting the print resolution of an inkjet printhead having a region of poor performance such that printing occurs outside the region of poor performance. Exemplary embodiments also include systems utilizing the methods.
    Type: Grant
    Filed: January 31, 2005
    Date of Patent: August 14, 2007
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Santiago Garcia Reyero, Cesar Fernandez, Robert F. Little