Patents by Inventor Tsunetoshi Nagata

Tsunetoshi Nagata 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).

  • Image fixing apparatus with detector for detecting movement of endless belt
    Patent number: 5347348
    Abstract: An image fixing apparatus includes a heater; a rotatable endless film, wherein an unfixed image on a recording material is heated and fixed by heat from the heater through the endless film; a displaceable member made of heat resistive resin material displaceable in accordance with movement of the endless film in a direction perpendicular to movement of the endless film; detecting element for detecting the displaceable member, the detecting element detecting the displaceable member to detect a lateral shift of the endless film.
    Type: Grant
    Filed: December 16, 1993
    Date of Patent: September 13, 1994
    Assignee: Canon Kabushiki Kaisha
    Inventor: Tsunetoshi Nagata
  • Lateral shift preventing mechanism for endless belt
    Patent number: 5343279
    Abstract: A lateral shift preventing mechanism for a rotatable endless belt includes a tension member for applying a tension to the endless belt; a receiving member for receiving lateral shifting force from the endless belt; and a displacing mechanism for converting a moving force to the receiving member to a displacing force to the tension member to displace the tension member.
    Type: Grant
    Filed: June 18, 1992
    Date of Patent: August 30, 1994
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tsunetoshi Nagata, Nobukazu Sasaki
  • Image fixing apparatus with means for preventing moisture dew on film
    Patent number: 5307133
    Abstract: An image fixing apparatus includes a heater which is fixed in operation; a film slidable relative to the heater and movable with a recording material, wherein a visualized image on the recording material is heated by heat from the heater through the film; and air discharging fan for discharging air around the film.
    Type: Grant
    Filed: July 3, 1990
    Date of Patent: April 26, 1994
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yoshiyuki Koshimizu, Tsunetoshi Nagata, Masamutsu Azuma
  • Developing device and process cartridge including the device
    Patent number: 5134441
    Abstract: A rotatable stirring member for stirring a developer for conveying the developer is provided within a receptacle housing the developer. The stirring member can be subjected to elastically twisted deformation so that a shaft portion at the side of one end for receiving a rotation driving force can rotate in a phase which is advanced from that of a shaft portion at the side of another end.
    Type: Grant
    Filed: May 14, 1990
    Date of Patent: July 28, 1992
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tsunetoshi Nagata, Kazushi Kitajima, Shinichi Sasaki