Patents Examined by J. B. Truhe
  • Electrophotographic apparatus
    Patent number: 4355884
    Abstract: One of several corona dischargers used in an electrophotographic apparatus is connected to a power source transformer so as to selectively operate these corona dischargers. The power source transformer is provided with a tertiary winding, to which a switching device is connected. When the switching device is turned on, a secondary output from the transformer becomes lower than a corona discharging limit voltage, whereby the corona discharging stops.
    Type: Grant
    Filed: January 14, 1980
    Date of Patent: October 26, 1982
    Assignee: Canon Kabushiki Kaisha
    Inventors: Haruhisa Honda, Tsutomu Toyono, Shunji Nakamura, Kano Tanaka, Yoshimasa Kimura