Patents by Inventor Yasuo Yamagishi

Yasuo Yamagishi 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).

  • Electrophotographic flash fixation process employing toner having improved light absorption properties and toner therefor
    Patent number: 4699863
    Abstract: A flash fixing process characterized by using a powdery developing toner comprising at least 80% by weight of a bisphenol A/epichlorohydrin type epoxy resin or a polyester resin as the binder resin, 1 to 10% by weight of a dye or pigment as the colorant and 1 to 10% by weight of a specific aminium compound.
    Type: Grant
    Filed: November 21, 1985
    Date of Patent: October 13, 1987
    Assignee: Fujitsu Limited
    Inventors: Norio Sawatari, Yasuo Yamagishi, Katsuji Ebisu, Yoshimichi Katagiri, Toshiaki Narusawa