Patents by Inventor Kotaro Danjo

Kotaro Danjo 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).

  • Thermal transfer film cassette and thermal transfer recording method
    Patent number: 5719616
    Abstract: A thermal transfer film cassette (1) used after having been removably loaded in a thermal transfer printer (2) is disclosed, which enables an appropriate printing without being used erroneously by the thermal transfer printer and without being forged or counterfeited. The thermal transfer film cassette (1) comprises: a thermal transfer film (11) for transferring thermo-recorded data onto a receiver sheet (4); a cassette casing (10) for housing the thermal transfer film (11) therein; and a light diffractive structure (20) formed on the cassette casing, for forming a diffractive image when irradiated with reproducing light. The diffractive image has printing data related to adaptability between the thermal transfer film cassette (1) and the thermal transfer printer (2). Further, it is preferable to form the light diffractive structure as being fragile to disable the fragile light diffractive structure (40) from being used again for forgery, after having been removed.
    Type: Grant
    Filed: January 18, 1996
    Date of Patent: February 17, 1998
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Kotaro Danjo, Hitoshi Saito