Patents by Inventor Randel L. Gibbons

Randel L. Gibbons 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).

  • Patent number: 5305020
    Abstract: A thermal transfer printer (10) includes multiple media trays (16, 120, 126) each encoded to communicate to a printer controller (46) via sensors (132, 134, 136) a print medium size and type contained in the tray, and a pair of thermal transfer ribbon (24) sensors (44,45) to communicate whether the ribbon includes a pre-coat material panel (34). A printer driver responsive to the media size and type sensors and the thermal transfer ribbon sensors to causes pre-coat material to be applied to coated or plain paper print media but not to transparency print media. Post-rendering color correction is provided for color images printed on various media type and pre-coat combinations. The printer driver prevents an image from printing when potentially wasteful conditions are detected in response to a print job request, forced tray selection, or automatic tray switching selection.
    Type: Grant
    Filed: December 21, 1992
    Date of Patent: April 19, 1994
    Assignee: Tektronix, Inc.
    Inventors: Randel L. Gibbons, Lynd L. Wieman, Suresh C. Paranjpe