Patents by Inventor Yuzuru Tsurumi

Yuzuru Tsurumi 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).

  • Developing apparatus including a developer compression-avoidance feature and image forming apparatus using same
    Patent number: 6721527
    Abstract: The developing apparatus has a housing, a developer bearing member rotatably provided at an opening of the housing, a developer containing room, a carrying member for carrying developer from the developer containing room toward the developer bearing member, and a developer accumulating portion provided proximate to the developer bearing member and adapted to accumulate the developer carried by the carrying member. In the developing apparatus, the developer accumulating portion is provided above a rotational center of the carrying member.
    Type: Grant
    Filed: July 11, 2002
    Date of Patent: April 13, 2004
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kenji Kanari, Yuzuru Tsurumi, Ken Nakagawa, Takeshi Kawamura
  • Developing apparatus in which developer carrying member is situated above developer storage chamber and image forming apparatus equipped with the developing apparatus
    Publication number: 20030012589
    Abstract: The developing apparatus has a housing, a developer bearing member rotatably provided at an opening of the housing, a developer containing room, a carrying member for carrying the developer in the developer containing room toward the developer bearing member, and a developer accumulating portion arranged near the developer bearing member and adapted to accumulate the developer carried by the carrying member. In the developing apparatus, the developer accumulating portion is provided above a rotational center of the carrying member.
    Type: Application
    Filed: July 11, 2002
    Publication date: January 16, 2003
    Applicant: Canon Kabushiki Kaisha
    Inventors: Kenji Kanari, Yuzuru Tsurumi, Ken Nakagawa, Takeshi Kawamura
  • Sheet supplying apparatus
    Patent number: 6070867
    Abstract: The present invention provides a drive controlling apparatus used in a sheet supplying apparatus including a lift/lower sheet supporting device for supporting a sheet, a sheet supply mechanism for feeding out the sheet supported by the sheet supporting device, a biasing mechanism for biasing the sheet supporting device toward the sheet supply mechanism, and a separating mechanism for separating the sheet supporting device from the sheet supply mechanism in opposition to a biasing force of the biasing mechanism, and wherein the sheet urged against the sheet supply mechanism by the biasing mechanism is fed out by the sheet supply mechanism, said drive controlling apparatus adapted to transmit a driving force for operating the separating mechanism from a drive source and comprising a drive side device connected to the drive source, a driven side device connected to the separating mechanism, and a play setting device for providing a play for not transmitting the driving force within a predetermined range between
    Type: Grant
    Filed: September 23, 1997
    Date of Patent: June 6, 2000
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yuzuru Tsurumi, Shigeru Okamura, Hiroyuki Ishii, Takeshi Niimura, Ryuichi Kojima, Masahide Tanoue, Akira Yuza
  • Sheet feeder and image forming apparatus using the same
    Patent number: 5927702
    Abstract: A sheet to be fed by a sheet feed roller is loaded on a sheet feed tray, and a side regulating member is disposed so as to be movable in accordance with the sheet size in order to regulate the position of the loaded sheet in the direction of the sheet width. The side regulating member extends downstream from the sheet feed roller in the sheet feeding direction in order to regulate the position of the sheet in the direction of the sheet width, thereby preventing oblique movement of the sheet.
    Type: Grant
    Filed: July 8, 1997
    Date of Patent: July 27, 1999
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hiroyuki Ishii, Yuzuru Tsurumi, Masahide Tanoue, Hidehiko Kajiya, Akira Yuza, Ryuichi Kojima