Patents by Inventor Russell R. Thomas

Russell R. Thomas 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 heating printing plates
    Patent number: 6495801
    Abstract: Certain types of lithographic printing plates are activated by preheating while certain other types are post heated to harden the coating. A platen having a large mass compared to the mass of a printing plate is heated and maintained in the exact temperature range to which the printing plate is to be heated. A printing plate is brought into heat exchange contact with the platen for the period of time required to heat the printing plate to the temperature of the platen. The printing plate may be heated while resting in a fixed position on the platen or while the printing plate is carried over the platen by a continuous thin metal conveyor belt in intimate contact with both the platen and printing plate.
    Type: Grant
    Filed: April 4, 2001
    Date of Patent: December 17, 2002
    Inventors: Howard A. Fromson, William J. Rozell, Paul C. Schunk, Russell R. Thomas
  • METHOD AND APPARATUS FOR HEATING PRINTING PLATES
    Publication number: 20020144991
    Abstract: Certain types of lithographic printing plates are activated by preheating while certain other types are post heated to harden the coating. A platen having a large mass compared to the mass of a printing plate is heated and maintained in the exact temperature range to which the printing plate is to be heated. A printing plate is brought into heat exchange contact with the platen for the period of time required to heat the printing plate to the temperature of the platen. The printing plate may be heated while resting in a fixed position on the platen or while the printing plate is carried over the platen by a continuous thin metal conveyor belt in intimate contact with both the platen and printing plate.
    Type: Application
    Filed: April 4, 2001
    Publication date: October 10, 2002
    Applicant: Howard A. Fromson
    Inventors: Howard A. Fromson, William J. Rozell, Paul C. Schunk, Russell R. Thomas