Patents by Inventor Noiryuki Umezawa

Noiryuki Umezawa 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).

  • Fixing device for fixing a developer image on a recording medium by induction-heating a heat roller
    Patent number: 6405014
    Abstract: A high-frequency current is supplied from a high-frequency generating circuit to a coil of a heat roller, and a high-frequency magnetic field is generated from the coil. The high-frequency magnetic field causes an eddy current to be generated in the heat roller, and a developer image on a recording medium is fixed by self-generation of heat of the heating roller based on an eddy-current loss. Electric wires between the high-frequency generating circuit and the coil are electrically shielded by a shield member.
    Type: Grant
    Filed: August 28, 2001
    Date of Patent: June 11, 2002
    Assignee: Toshiba Tec Kabushiki Kaisha
    Inventors: Kenji Takano, Taizo Kimoto, Noiryuki Umezawa, Hisaaki Kawano, Hiroshi Nakayama, Osamu Takagi, Satoshi Kinouchi, Kazuhiko Kikuchi, Masahiko Ogura
  • Fixing device for fixing a developer image on a recording medium by induction-heating a heat roller
    Publication number: 20020003980
    Abstract: A high-frequency current is supplied from a high-frequency generating circuit to a coil of a heat roller, and a high-frequency magnetic field is generated from the coil. The high-frequency magnetic field causes an eddy current to be generated in the heat roller, and a developer image on a recording medium is fixed by self-generation of heat of the heating roller based on an eddy-current loss. Electric wires between the high-frequency generating circuit and the coil are electrically shielded by a shield member.
    Type: Application
    Filed: August 28, 2001
    Publication date: January 10, 2002
    Applicant: TOSHIBA TEC KABUSHIKI KAISHA
    Inventors: Kenji Takano, Taizo Kimoto, Noiryuki Umezawa, Hisaaki Kawano, Hiroshi Nakayama, Osamu Takagi, Satoshi Kinouchi, Kazuhiko Kikuchi, Masahiko Ogura