Patents by Inventor Hisakazu Ohkubo

Hisakazu Ohkubo 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).

  • Image forming apparatus with air blower to secure recording material to conveying device
    Patent number: 5625444
    Abstract: An image forming apparatus has the capability of maintaining good contact between a recording material and a recording-material carrying belt so that stable carrying force is obtained, thereby preventing deformation of an image due to a failure for the recording material to enter a fixing unit or due to contact of the recording material with some element present above the recording-material carrying belt. The image forming apparatus includes an air fan for generating a wind pressure applied to a recording material in a direction that presses the recording material against a recording-material carrying belt. In an enhanced mode, two or more air fans are arranged in a direction crossing the recording-material carrying direction.
    Type: Grant
    Filed: June 24, 1996
    Date of Patent: April 29, 1997
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kazuo Suzuki, Takahiro Kubo, Hisakazu Ohkubo
  • Image forming apparatus with recording sheet separating device
    Patent number: 5537193
    Abstract: In an image forming apparatus in which when separating a recording material from a recording-material conveying sheet, the recording-material conveying sheet is pressed and deformed by a pressing member, the pressing member has a convex curved portion contacting the recording-material conveying sheet in a direction orthogonal to the moving direction of the recording-material conveying sheet. It is thereby possible to sufficiently deform the recording-material conveying sheet while preventing it from being permanently deformed or broken.
    Type: Grant
    Filed: January 3, 1995
    Date of Patent: July 16, 1996
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takashi Hasegawa, Isao Kumada, Yukio Shimada, Hisakazu Ohkubo, Yoichi Kimura, Kiyoshi Oyama, Satoshi Tamura