Patents by Inventor Roanld A. Askeland

Roanld A. Askeland 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).

  • Printing data on a non-integer dot grid for improved saturation
    Patent number: 6631964
    Abstract: A system and method of printing allows mapping between an input print data file and an output dot grid data file, wherein the resolution of the resolution of the dot grid is not an integer multiple of the print data. A method includes forming an input print data group of pixels within the print data file and forming an output dot grid group of a different number of pixels within the dot grid data file. The pixels within the input group are associated pixels within the output group by a mapping function. By varying the number of pixels within the two groups, the printhead nozzle firing frequency and the rate of ink deposition per unit area of media may be controlled. Accordingly, print output quality may be maximized given the constraints of the hardware available.
    Type: Grant
    Filed: October 16, 2001
    Date of Patent: October 14, 2003
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Roanld A. Askeland, Ronald Burns
  • Printing data on a non-integer dot grid for improved saturation
    Publication number: 20030076374
    Abstract: A system and method of printing allows mapping between an input print data file and an output dot grid data file, wherein the resolution of the resolution of the dot grid is not an integer multiple of the print data. A method includes forming an input print data group of pixels within the print data file and forming an output dot grid group of a different number of pixels within the dot grid data file. The pixels within the input group are associated pixels within the output group by a mapping function. By varying the number of pixels within the two groups, the printhead nozzle firing frequency and the rate of ink deposition per unit area of media may be controlled. Accordingly, print output quality may be maximized given the constraints of the hardware available.
    Type: Application
    Filed: October 16, 2001
    Publication date: April 24, 2003
    Inventors: Roanld A. Askeland, Ronald Burns