Patents by Inventor Joan Triphon Vermeersch

Joan Triphon Vermeersch 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).

  • Producing a lithographic printing plate by sequentially exposing a thermo-sensitive imaging element by a set of radiation beams
    Patent number: 5932394
    Abstract: A method for generating on a lithographic printing plate a screened reproduction of a contone image, comprising the steps of: (1) transporting a thermo-sensitive imaging element through an exposure area; (2) scanwise exposing the thermo-sensitive imaging element according to screened data representative for tones of a contone image with a set (s) of radiation beams (b) as the thermo-sensitive imaging element is transported through the exposure area, characterized in that at any given moment (ta+.DELTA.t) during the exposure at least two radiation beams (bi,bj) of the set of radiation beams impinge on different microdots (ma, ma+.DELTA.m) of a scanline (1a) on the imaging element, so that by completion of the exposure step each effective microdot of the scanline has been impinged by all effective radiation beams of the set.
    Type: Grant
    Filed: March 6, 1997
    Date of Patent: August 3, 1999
    Assignee: Agfa-Gevaert N.V.
    Inventors: Johan Hubert Van Hunsel, Jacobus Herman Bosschaerts, Joan Triphon Vermeersch, Robert Theodoor Overmeer, Fred William Marland