Patents by Inventor Kazuo Shishido

Kazuo Shishido 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).

  • Charging device, process unit having same and image forming apparatus using process unit
    Patent number: 5272505
    Abstract: A charging apparatus includes a charging member contactable to a member to be charged to charge the member to be charged; a power source for supplying a voltage between the charging member and the member to be charged; and a conductive member for covering a contact portion between the charging member and the member to be charged, the conductive member being electrically grounded.
    Type: Grant
    Filed: October 22, 1991
    Date of Patent: December 21, 1993
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kazuo Shishido, Yasushi Sato, Shinichi Sasaki, Hiroaki Miyake, Yoshiya Nomura
  • Process cartridge detachably mountable to image forming apparatus featuring an injectable sealing member
    Patent number: 5208634
    Abstract: A process cartridge detachably mountable to an image forming apparatus includes a device contributable for forming an image; a developer accommodator; and a sealing member between the image forming device and the developer accommodator, wherein the sealing member is provided by injecting a liquid material which becomes an elastomer when it is solidified.
    Type: Grant
    Filed: April 23, 1991
    Date of Patent: May 4, 1993
    Assignee: Canon Kabushiki Kaisha
    Inventors: Isao Ikemoto, Tadayuki Tsuda, Kazushi Watanabe, Kazuhiko Ishiwata, Kazuo Shishido, Kanji Yano, Makoto Tanaka, Shinichi Sasaki, Toshiyuki Karakama, Hiroyuki Shirai
  • Process cartridge and image forming apparatus usable with same featuring selectively engageable drive mechanism
    Patent number: 5126800
    Abstract: A process cartridge detachably mountable to an image forming apparatus includes a movable image bearing member having first and second drive transmitting portions; a developer carrying member for carrying a developer to supply the developer to the image bearing member, the developer carrying member having a third drive transmitting portion; wherein the third drive transmitting portion is selectively engageable with a first drive transmitting portion and a second drive transmitting portion.
    Type: Grant
    Filed: February 19, 1991
    Date of Patent: June 30, 1992
    Assignee: Cannon Kabushiki Kaisha
    Inventors: Kazuo Shishido, Tadayuki Tsuda, Makoto Tanaka, Shinichi Sasaki, Takashi Hibi