Patents by Inventor Hisamitsu Mizuno

Hisamitsu Mizuno 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: 6150066
    Abstract: A method of repetitively using a sheet or similar toner image carrier produced from an image forming apparatus, and a toner applicable thereto. A toner forming an image on the toner image carrier is removed to erase the image. The toner image carrier is implemented as a synthetic sheet. Use is made of a toner whose adhering force to the sheet is weaker than the adhering force of a conventional toner.
    Type: Grant
    Filed: May 5, 1997
    Date of Patent: November 21, 2000
    Assignee: Ricoh Company, Ltd.
    Inventors: Tsuneo Kurotori, Katsuhiro Echigo, Hisamitsu Mizuno, Mitsuaki Urakawa, Kunio Hibi
  • Patent number: 5678158
    Abstract: An apparatus for removing images on an image carrier sheet to allow the image carrier sheet to be repeatedly used. The apparatus includes an image removing member for removing images from an image carrier sheet, the images being fixed on the image carrier sheet. A liquid supply supplies a liquid to the image removing member and a transporting mechanism transports the image carrier sheet with the fixed images to the image removing member. The fixed images on the image carrier sheet are removed by the image removing member when the liquid supplied to the image removing member is applied to a surface of the image carrier sheet. A pressing member presses the surface of the image carrier sheet against the image removing member, the image removing member including a squeeze roller. The liquid supply means includes a liquid supply roller and the transporting mechanism comprises a pair of transport rollers. The squeeze roller is rotated at a higher speed than the pair of transport rollers.
    Type: Grant
    Filed: December 7, 1994
    Date of Patent: October 14, 1997
    Assignee: Ricoh Company, Ltd.
    Inventors: Tsuneo Kurotori, Katsuhiro Echigo, Hisamitsu Mizuno, Mitsuaki Urakawa, Kunio Hibi
  • Patent number: 5463447
    Abstract: A device for removing only a toner forming a toner image on a toner image carrier produced from an image forming apparatus form the toner image carrier, so that the carrier may be repetitively used. The toner image carrier is implemented as a synthetic sheet. Use is made of a toner whose adhering force to the sheet is weaker than the adhering force of a conventional toner.
    Type: Grant
    Filed: September 7, 1993
    Date of Patent: October 31, 1995
    Assignee: Ricoh Company, Ltd.
    Inventors: Tsuneo Kurotori, Katsuhiro Echigo, Mitsuaki Urakawa, Hisamitsu Mizuno, Kunio Hibi