Patents by Inventor David Elwell

David Elwell 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 thermal processing of photosensitive printing elements
    Patent number: 8739701
    Abstract: The present invention pertains to a process and an apparatus for treating a photosensitive element to form a relief structure suitable for flexographic printing plate. The apparatus comprises an enclosure, a conveyor, a heatable roller with absorbent material conducted over it, and a roller that can significantly smooth or uniformly roughen the relief structure of the flexographic printing plate. Previously selectively cured photosensitive elements are developed by means of the heatable roller by blotting with the absorbent material, and the resulting relief structure is made uniform by way of a smoothing or roughening roller. The flexographic plates produced by the method and apparatus are especially suited to processes that require substantially smoothed or uniformly roughened printing plate surfaces, which are capable of producing better quality printing.
    Type: Grant
    Filed: July 31, 2008
    Date of Patent: June 3, 2014
    Inventors: Ryan Vest, Brian Cook, Jim Hennessy, David Elwell
  • Method and Apparatus for Thermal Processing of Photosensitive Printing Elements
    Publication number: 20100024672
    Abstract: The present invention pertains to a process and an apparatus for treating a photosensitive element to form a relief structure suitable for flexographic printing plate. The apparatus comprises an enclosure, a conveyor, a heatable roller with absorbent material conducted over it, and a roller that can significantly smooth or uniformly roughen the relief structure of the flexographic printing plate. Previously selectively cured photosensitive elements are developed by means of the heatable roller by blotting with the absorbent material, and the resulting relief structure is made uniform by way of a smoothing or roughening roller. The flexographic plates produced by the method and apparatus are especially suited to processes that require substantially smoothed or uniformly roughened printing plate surfaces, which are capable of producing better quality printing.
    Type: Application
    Filed: July 31, 2008
    Publication date: February 4, 2010
    Inventors: Ryan Vest, Brian Cook, Jim Hennessy, David Elwell
  • Fireplace cover
    Patent number: D470584
    Type: Grant
    Filed: January 29, 2002
    Date of Patent: February 18, 2003
    Inventors: David Elwell, Jean Elwell