Patents by Inventor Kohichi Moriyama

Kohichi Moriyama 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).

  • Heating roller of a fixing device with two internal heaters for axial heat distribution
    Patent number: 6996363
    Abstract: A heating device for heating a recording sheet. The heating device has a first heater located within a heating roller. The first heater has a heat distribution effective to form a low temperature region in an axially central portion of the heating roller and a high temperature region in each of axially opposite end portions of the heating roller. There is a second heater located within the heating roller that has a heat distribution effective to form a high temperature region in the axially central portion of the heating roller, a low temperature region in each of the opposite end portions of the heating roller, and a second-level high temperature region in each of axially opposite end portions of the high temperature region, the second-level high temperature region being lower in temperature than the high temperature region.
    Type: Grant
    Filed: July 8, 2004
    Date of Patent: February 7, 2006
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Kohji Aoki, Kohichi Moriyama, Motoaki Okitsu, Hiroaki Hori, Tatsuya Shinkawa, Hideki Goto
  • Heating device
    Publication number: 20050008414
    Abstract: A heating device for heating a recording sheet includes: a first heater disposed within a heating roller and having a heat distribution characteristic to form a low temperature region in an axially central portion of the heating roller and a high temperature region in each of axially opposite end portions of the heating roller; and a second heater disposed within the heating roller and having a heat distribution characteristic to form a high temperature region in the axially central portion of the heating roller, a low temperature region in each of the opposite end portions of the heating roller, and a second-level high temperature region in each of axially opposite end portions of the high temperature region, the second-level high temperature region being lower in temperature than the high temperature region.
    Type: Application
    Filed: July 8, 2004
    Publication date: January 13, 2005
    Inventors: Kohji Aoki, Kohichi Moriyama, Motoaki Okitsu, Hiroaki Hori, Tatsuya Shinkawa, Hideki Goto