Patents Assigned to Larry F. Vaughn
  • Patent number: 5942464
    Abstract: The invention described herein relates to methods and systems for printing. More specifically, the present invention provides methods and systems for printing using a disposable substrate containing an essentially dry layer of microcapsules which contain a colorless dye compound or dye developing compound and a substantially dry layer of containing a complementary compound in a second substrate region for reaction with the dye or dye developing compound to form a visible image. The disposable printing system according to the invention provides a reduced availability for bacterial growth and transfer due to its essentially dry characteristics.
    Type: Grant
    Filed: January 12, 1998
    Date of Patent: August 24, 1999
    Assignee: Larry F. Vaughn
    Inventors: Larry Vaughn, John G. Whitaker
  • Patent number: 5830823
    Abstract: The invention described herein relates to methods and systems for printing. More specifically, the present invention provides methods and systems for printing using a disposable substrate containing an essentially dry layer of microcapsules which contain a colorless dye solution in a first substrate region and a substantially dry layer of dye developing compound in a second substrate region. The disposable printing system according to the invention provides a reduced availability for bacterial growth and transfer due to its essentially dry characteristics.
    Type: Grant
    Filed: November 7, 1995
    Date of Patent: November 3, 1998
    Assignee: Larry F. Vaughn
    Inventors: Larry F. Vaughn, John G. Whitaker
  • Patent number: 5707924
    Abstract: The invention described herein relates to methods mid systems for printing. More specifically, the present invention provides methods and systems for printing using a disposable substrate containing an essentially dry layer of microcapsules which contain a colorless dye solution in a first substrate region and a substantially dry layer of dye developing compound in a second substrate region. The disposable printing system according to the invention provides a reduced availability for bacterial growth and transfer due to its essentially dry characteristics.
    Type: Grant
    Filed: November 5, 1996
    Date of Patent: January 13, 1998
    Assignee: Larry F. Vaughn
    Inventors: Larry F. Vaughn, John G. Whitaker