Patents by Inventor Paul R. Harding

Paul R. Harding 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: 5795084
    Abstract: A method and apparatus for low cost thermal printing in a thermal printer having a software controlled thermal print head that moves in relation to a print ribbon disposed adjacent to a print area of a printed medium. The thermal print head is selectively energized to heat the print ribbon which deposits the ink onto the printed medium as the print head moves in relation to the print ribbon in a print stroke. The cost of printing is decreased by efficient use of the ink on the print ribbon. Between print strokes, the print ribbon is displaced an incremental interval to position an unused portion of the print ribbon for printing on the printed medium during a subsequent print stroke. The precise displacement of the print ribbon may be software controlled based on the detection of indices disposed at spaced intervals along the print ribbon which further increases the efficient usage of ink on the print ribbon.
    Type: Grant
    Filed: November 20, 1995
    Date of Patent: August 18, 1998
    Assignee: Illinois Tool Works Inc.
    Inventors: Paul R. Harding, Donald Van Erden, James W. Stone
  • Patent number: 5649774
    Abstract: A method and apparatus for low cost thermal printing in a thermal printer having a software controlled thermal print head that moves in relation to a print ribbon disposed adjacent to a print area of a printed medium. The thermal print head is selectively energized to heat the print ribbon which deposits the ink onto the printed medium as the print head moves in relation to the print ribbon in a print stroke. The cost of printing is decreased by efficient use of the ink on the print ribbon. Between print strokes, the print ribbon is displaced an incremental interval to position an unused portion of the print ribbon for printing on the printed medium during a subsequent print stroke. The precise displacement of the print ribbon may be software controlled based on the detection of indices disposed at spaced intervals along the print ribbon which further increases the efficient usage of ink on the print ribbon.
    Type: Grant
    Filed: November 10, 1994
    Date of Patent: July 22, 1997
    Assignee: Illinois Tool Works Inc.
    Inventors: Paul R. Harding, Donald L. Van Erden, James W. Stone
  • Patent number: 5017028
    Abstract: Flat bed thermal printing apparatus adapted to print information on to an elongate substrate, or on to products disposed upon the substrate, at a printing area within the apparatus, the said substrate being movable through the apparatus in a step by step movement, with a stop for printing between each step, along a path which causes the substrate to be disposed in a substantially flat position as the substrate is stopped at the printing area after each step wherein the apparatus comprises a printing head provided with a multiplicity of individually energizable dot type thermal elements, means to move the printing head relative to the substrate while the substrate is stationary at the printing area between its stepwise movements through the apparatus with the substrate in its substantially flat disposition, means selectively to energize the said printing elements during movement of the printing head to effect printing and means positively to hold the substrate in position at the printing area during printing.
    Type: Grant
    Filed: September 25, 1989
    Date of Patent: May 21, 1991
    Assignee: Compular Limited
    Inventor: Paul R. Harding