Patents by Inventor Takaich Kitagawa

Takaich Kitagawa 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).

  • Electrostatic photographic copying machine
    Patent number: 4179211
    Abstract: An electrostatic photographic copying machine includes a device for automatically exchanging used master paper with fresh master paper on a master holding body, and for indicating when such an exchange should be initiated. The machine includes an apparatus for cleaning the fixing roller, an apparatus for adjusting the amount of toner supplied to the developer, a transfer device whereby improper discharge is prevented, a transfer paper jam detector, and a device for improved mixing of developer.
    Type: Grant
    Filed: June 2, 1977
    Date of Patent: December 18, 1979
    Assignee: Mita Industrial Co., Ltd.
    Inventors: Hiroshi Kimura, Takaich Kitagawa, Masahiko Hisajima, Shoji Yoshikado, Tatsuo Aizawa