Patents by Inventor Ryo Kitao

Ryo Kitao 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).

  • Flash fixing device, image forming device using the same, and flash lamp light emission control method
    Patent number: 7536146
    Abstract: A flash fixing device comprises a first and second flash lamps that emit flashes of light that fix a toner image transferred onto a recording medium and a light emission control unit that controls the light emissions of the first and second flash lamps so that the light flashes emitted from the first flash lamp and the second flash lamp are each irradiated at different timing on each portion on the recording medium.
    Type: Grant
    Filed: July 18, 2006
    Date of Patent: May 19, 2009
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Akira Iwaishi, Mitsuhiro Mori, Ryo Kitao, Teruki Kishimoto, Hiroshi Nou, Kouichi Sanpei
  • Flash fixing device, image forming device using the same, and flash lamp light emission control method
    Publication number: 20080019745
    Abstract: A flash fixing device comprises a first and second flash lamps that emit flashes of light that fix a toner image transferred onto a recording medium and a light emission control unit that controls the light emissions of the first and second flash lamps so that the light flashes emitted from the first flash lamp and the second flash lamp are each irradiated at different timing on each portion on the recording medium.
    Type: Application
    Filed: July 18, 2006
    Publication date: January 24, 2008
    Inventors: Akira Iwaishi, Mitsuhiro Mori, Ryo Kitao, Teruki Kishimoto, Hiroshi Nou, Kouichi Sanpei
  • Transferring device controlled for preventing the leading edge of a sheet from being excessively charged
    Patent number: 5200784
    Abstract: A toner image transferring device is applied to, for example, an electrophotographic printer for electrostatically transferring a charged toner image from a photosensitive drum to a sheet or paper. The device encompasses a transfer charger disposed near the drum to form a clearance therebetween for feeding an electric charge to the sheet or paper through which the sheet or paper is passed, an electric source for supplying an electric energy to the transfer charger to give the sheet or paper an electric charge having a polarity opposite to that of the charge of the toner image, and a controller for controlling the electric energy output from the electric source the transfer charger so that a leading edge of the sheet or paper can be prevented from being excessively charged.
    Type: Grant
    Filed: October 10, 1991
    Date of Patent: April 6, 1993
    Assignee: Fujitsu Limited
    Inventors: Masatoshi Kimura, Sachio Sasaki, Hideaki Iwasaki, Kunihiko Sato, Masao Konishi, Akiyoshi Iwamasa, Toshio Tooda, Hiroshi Nou, Shigenobu Utaka, Ryo Kitao