Patents by Inventor Michihiro Sima

Michihiro Sima 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).

  • Oil coating roller, seal ring used for the roller, and fixing device using the seal ring
    Patent number: 6668150
    Abstract: An oil application roller capable of preventing an oil leak when the roller is left in the state where the rotation axis thereof runs vertically and also capable of preventing an oil escape from the roller in a fixing device. The oil application roller (15) includes a seal ring (25) at respective end portions of the roller (15). The seal ring (25) includes a vent hole (26) extending from an end face of the roller (15) to the outside of the seal ring (25), and the cross-sectional area of the vent hole is not less than 0.01 mm2 and not more than 1 mm2.
    Type: Grant
    Filed: June 17, 2002
    Date of Patent: December 23, 2003
    Assignees: Matsushita Electric Industrial Co., Ltd., Matsushita Graphic Communication Systems, Inc.
    Inventors: Akinori Toyoda, Noriyuki Tajima, Michihiro Sima, Yoshihiro Nakayama, Takumi Kitano
  • Oil coating roller, seal ring used for the roller, and fixing device using the seal ring
    Publication number: 20020181978
    Abstract: An oil application roller capable of preventing an oil leak when the roller is left in the state where the rotation axis thereof runs vertically and also capable of preventing an oil escape from the roller in a fixing device. The oil application roller (15) includes a seal ring (25) at respective end portions of the roller (15). The seal ring (25) includes a vent hole (26) extending from an end face of the roller (15) to the outside of the seal ring (25), and the cross-sectional area of the vent hole is not less than 0.01 mm2 and not more than 1 mm2.
    Type: Application
    Filed: June 17, 2002
    Publication date: December 5, 2002
    Inventors: Akinori Toyoda, Noriyuki Tajima, Michihiro Sima, Yoshihiro Nakayama, Takumi Kitano