Patents by Inventor Takuya Ejiri

Takuya Ejiri 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 having temperature detecting member and image forming apparatus using said fixing device
    Patent number: 6636709
    Abstract: A fixing device for fixing a toner image on a recording medium includes a heating roller, a fixing roller, an endless fixing belt extended around at least the heating roller and the fixing roller and configured to be heated by the heating roller, a pressing roller disposed opposite to the fixing roller via the fixing belt, a temperature detecting member configured to detect a surface temperature of the heating roller, and a control device configured to control a surface temperature of the fixing belt at a predetermined temperature based on a surface temperature of the heating roller detected by the temperature detecting member. The temperature detecting member contacts a circumferential surface of the heating roller where the fixing belt is not extended around, such that the temperature detecting member is held in a low frictional relation to the circumferential surface of the heating roller.
    Type: Grant
    Filed: June 28, 2001
    Date of Patent: October 21, 2003
    Assignee: Ricoh Company, Ltd.
    Inventors: Hideo Furukawa, Takuya Ejiri, Motokazu Yasui, Hiroyuki Gotoh, Masanao Ehara, Hirofumi Ogawa, Hiroshi Yoshinaga
  • Fixing device having temperature detecting member and image forming apparatus using said fixing device
    Publication number: 20020018663
    Abstract: A fixing device for fixing a toner image on a recording medium includes a heating roller, a fixing roller, an endless fixing belt extended around at least the heating roller and the fixing roller and configured to be heated by the heating roller, a pressing roller disposed opposite to the fixing roller via the fixing belt, a temperature detecting member configured to detect a surface temperature of the heating roller, and a control device configured to control a surface temperature of the fixing belt at a predetermined temperature based on a surface temperature of the heating roller detected by the temperature detecting member. The temperature detecting member contacts a circumferential surface of the heating roller where the fixing belt is not extended around, such that the temperature detecting member is held in a low frictional relation to the circumferential surface of the heating roller.
    Type: Application
    Filed: June 28, 2001
    Publication date: February 14, 2002
    Applicant: RICOH COMPANY, LTD.
    Inventors: Hideo Furukawa, Takuya Ejiri, Motokazu Yasui, Hiroyuki Gotoh, Masanao Ehara, Hirofumi Ogawa, Hiroshi Yoshinaga