Patents Represented by Law Firm Seed and Berry LLD
  • Patent number: 5625399
    Abstract: A method and apparatus for controlling a thermal printhead. In response to a sequence of print commands, the method and apparatus generate an energization signal for each thermal print element in the printhead. In one embodiment, the energization is a function of at least the present print command and a future print command. In certain embodiments, the energization signal may also be a function of a past print command, print commands for at least one adjoining print element, and other parameters. Each print element in the printhead can, accordingly, be maintained at a proper temperature to ensure long printhead life and cause the printhead to generate sharp images.
    Type: Grant
    Filed: January 31, 1992
    Date of Patent: April 29, 1997
    Assignee: Intermec Corporation
    Inventors: Christopher A. Wiklof, Edward M. Millet, Thomas A. Sweet