Patents by Inventor Shoji Ukei

Shoji Ukei 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).

  • Patent number: 7292805
    Abstract: An image forming device includes an openable panel disposed on a side of the image forming device. The panel includes a pair of carrying rollers, a transcribing roller and a pair of discharging sheet carrying rollers.
    Type: Grant
    Filed: December 22, 2004
    Date of Patent: November 6, 2007
    Assignee: Ricoh Printing Systems, Ltd.
    Inventors: Haruo Hashimoto, Kazuhiro Wakamatsu, Tadashi Okano, Takamitsu Ikematsu, Shoji Ukei
  • Patent number: 7142803
    Abstract: A fixing device includes a roller; an endless belt which is in contact with the roller and rotates with a circulation of the roller in a follower manner; a heating source in at lease one of an inside of the roller and an inside of the endless belt; and a pressure-applying member which is inside the endless belt and presses the endless belt against the roller. A sliding layer is provided on a side on which the pressure-applying member is in contact with the endless belt, and the sliding layer comprises at least two layers and holds a lubricant.
    Type: Grant
    Filed: December 15, 2004
    Date of Patent: November 28, 2006
    Assignee: Ricoh Printing Systems, Ltd.
    Inventors: Tuyoshi Koyama, Toshio Ogiso, Chikara Hiraoka, Kazuo Kikuchi, Tetsuji Takegoshi, Toru Hanashima, Shoji Ukei
  • Patent number: 6928257
    Abstract: An image forming and recording apparatus, having a fixing apparatus for fixing unfixed toner image on a recording medium, wherein the fixing apparatus includes a fixing roller integrating a heater therein, an endless belt wound around the fixing roller, and three pressure members for pressing the endless belt onto the fixing roller. A pressure member located nearest to a side of entry of paper among the three pressure members is made up with a non-rotary type pressure member, and other two pressure members are made up with either one of a rotary type pressure member and the non-rotary type pressure member.
    Type: Grant
    Filed: June 27, 2003
    Date of Patent: August 9, 2005
    Assignee: Ricoh Printing Systems, Ltd.
    Inventors: Toshio Ogiso, Masaru Nakano, Hiromitsu Fukuda, Shigeru Obata, Toru Hanashima, Kazushige Oonishi, Chikara Hiraoka, Toru Ohashi, Akira Shimizu, Kazuo Kikuchi, Shogo Matsumoto, Shoji Ukei, Katsuyoshi Onose, Tsuyoshi Koyama
  • Publication number: 20050163533
    Abstract: An opening and closing means is disposed on a side of the main body, and provides a pair of carrying means, a transcribing roller and a pair of discharging sheet carrying means. Thereby, there can be provided the image forming apparatus easy to access to sheet remaining in the apparatus.
    Type: Application
    Filed: December 22, 2004
    Publication date: July 28, 2005
    Applicant: Ricoh Printing Systems, Ltd.
    Inventors: Haruo Hashimoto, Kazuhiro Wakamatsu, Tadashi Okano, Takamitsu Ikematsu, Shoji Ukei
  • Publication number: 20050147436
    Abstract: A fixing device includes a roller; an endless belt which is in contact with the roller and rotates with a circulation of the roller in a follower manner; a heating source in at lease one of an inside of the roller and an inside of the endless belt; and a pressure-applying member which is inside the endless belt and presses the endless belt against the roller. A sliding layer is provided on a side on which the pressure-applying member is in contact with the endless belt, and the sliding layer comprises at least two layers and holds a lubricant.
    Type: Application
    Filed: December 15, 2004
    Publication date: July 7, 2005
    Applicant: Ricoh Printing Systems, Ltd.
    Inventors: Tuyoshi Koyama, Toshio Ogiso, Chikara Hiraoka, Kazuo Kikuchi, Tetsuji Takegoshi, Toru Hanashima, Shoji Ukei
  • Publication number: 20040057759
    Abstract: An image forming and recording apparatus, having a fixing apparatus for fixing unfixed toner image on a recording medium, wherein said fixing apparatus comprises: a fixing roller integrating a heater therein; an endless belt wound around said fixing roller; and three (3) pressure members for pressing said endless belt onto said fixing roller, wherein second one from a side of entry of paper is made at maximum in pressure loading, among said three (3) pressure members, thereby achieving stable fixing of oil-less toner at high speed.
    Type: Application
    Filed: June 27, 2003
    Publication date: March 25, 2004
    Inventors: Toshio Ogiso, Masaru Nakano, Hiromitsu Fukuda, Shigeru Obata, Toru Hanashima, Kazushige Oonishi, Chikara Hiraoka, Toru Ohashi, Akira Shimizu, Kazuo Kikuchi, Shogo Matsumoto, Shoji Ukei, Katsuyoshi Onose, Tsuyoshi Koyama
  • Patent number: 6181889
    Abstract: An image forming apparatus in which a distance along a photosensitive belt from a cleaning unit to an exposing position is set to be shorter than a distance from the rear end of a print image to the front end of the following print image, so that a latent image is not formed by an exposing unit when a joint of the photosensitive belt passes the cleaning unit.
    Type: Grant
    Filed: February 24, 1997
    Date of Patent: January 30, 2001
    Assignee: Hitachi, Ltd.
    Inventors: Tomio Hayano, Tetsuro Akasaki, Kazuhiro Wakamatsu, Isamu Terashima, Shoji Ukei
  • Patent number: 5493384
    Abstract: The present invention relates to a desk-top type color electro-photographic apparatus which is easy in use, small in size and light in weight, wherein maintenance such as changing its photosensitive member can be performed by a user and color adjustment is performed with high accuracy of less than 100 .mu.m. Developing units for four colors are placed in a rank, a single endless-belt-shaped photosensitive member being placed below them to form an approximately oval shape, the photosensitive member being touched with a transfer member on its major axis side to transfer each color of images. In addition to this, the photosensitive member is employed a cartridge type for easiness of user's maintenance and constructed such that highly accurate positioning between the body of apparatus and the cartridge can be performed.
    Type: Grant
    Filed: April 14, 1994
    Date of Patent: February 20, 1996
    Assignee: Hitachi, Ltd.
    Inventors: Junichi Matsuno, Masaru Nakano, Tetsuro Akasaki, Tomio Hayano, Shoji Ukei, Hiroyuki Tadokoro