Patents by Inventor Robert C. Zawada

Robert C. Zawada 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).

  • Receptor sheet using low glass transition coating
    Patent number: 5427847
    Abstract: Provided is a receptor sheet tier receiving donor material in imagewise fashion by means of mass transfer printing. The receptor sheet has a substrate having a wax coating with a glass transition temperature below about 25.degree. C. The coating may also contain a polymeric material and/or silica. Such receptor sheets provide excellent print quality in high speed printers.Also provided is donor sheet-receptor sheet system, a method of forming the receptor sheet of the invention, and a method for forming an image on the receptor sheet of the invention.
    Type: Grant
    Filed: May 20, 1993
    Date of Patent: June 27, 1995
    Assignee: Rexham Graphics Inc.
    Inventor: Robert C. Zawada
  • Acceptor sheet useful for mass transfer imaging
    Patent number: 5308680
    Abstract: Provided is an acceptor sheet useful for receiving marking material in imagewise fashion by means of mass transfer printing. The acceptor sheet comprises a substrate which has a microrough surface, wherein the coating is comprised of polymer particles which have not coalesced to form a uniform, continuous film. Such acceptor sheets exhibit superior mass transfer printing properties, and in particular superior wax thermal transfer printing properties, as compared to acceptor sheets having smooth coatings comprised of film-forming polymers.
    Type: Grant
    Filed: October 22, 1991
    Date of Patent: May 3, 1994
    Assignee: Rexham Graphics Inc.
    Inventors: Robert C. Desjarlais, Robert C. Zawada