Patents by Inventor Shigeyasu Nagoshi

Shigeyasu Nagoshi 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: 4772900
    Abstract: An ink-jet recording apparatus has a level gauge communicating with both an ink storage unit and the atmosphere in order to detect the amount of remaining recording ink in the ink storage unit, and a sealing device for shielding the interior of the level gauge from the atmosphere.
    Type: Grant
    Filed: October 17, 1986
    Date of Patent: September 20, 1988
    Assignee: Canon Kabushiki Kaisha
    Inventor: Shigeyasu Nagoshi
  • Patent number: 4745414
    Abstract: An ink jet recorder is provided with a recovery device for preventing unsatisfactory ink discharge of a recording head, the recovery device being provided with ink suction means having a cap covering an ink discharge port, a vent valve for opening and closing the interior of the cap with respect to the atmosphere and a suction pump for producing a negative pressure in the cap, and wiping means having a cleaning blade adapted to be advanced and retracted relative to the ink discharge port. The cleaning blade is protruded when a motor effecting the sequence operation of the ink suction means revolves in one direction, and is stopped at its retracted position when the motor revolves in the opposite drection.
    Type: Grant
    Filed: April 6, 1987
    Date of Patent: May 17, 1988
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shigeru Okamura, Shigeyasu Nagoshi, Toshiyuki Ohnishi