Patents by Inventor Jack N. Bartholman

Jack N. Bartholman 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).

  • Method and apparatus for determining toner level in electrophotographic print engines
    Publication number: 20020089684
    Abstract: The toner in the toner cartridge is determined by taking each of the rasterized images output by the RIP and evaluating the pixel levels over the surface thereof. The average value is determined as a percentage of the maximum toner that can be applied to the page. This is then subtracted from a toner value and a remaining toner level determined. Further, all pages of the rasterized document can be evaluated to predetermine the toner level after printing. If this falls below a predetermined minimum, printing is inhibited for that document.
    Type: Application
    Filed: May 3, 2001
    Publication date: July 11, 2002
    Inventors: Michael W. Barry, Jack N. Bartholman, Francis A. Rowe, E. Neal Tompkins, Peter A. Zuber