Patents by Inventor Takashi Sugito

Takashi Sugito 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).

  • Toner image fixing device having improved lamp heater
    Patent number: 5436431
    Abstract: A toner image fixing device comprises a heat roller and a lamp heater. The lamp heater is formed from a nicrome wire stretched between clamp terminals, a silica tube and ceramic holders closely fitted to respective ends of the silica tube and which have an external diameter which is substantially the same as the diameter of the heating roller. The lamp heater is secured by a lamp holder and frame to the shaft of the heat roller. The heat roller is rotatably supported by a bearing and is driven by a driving gear.
    Type: Grant
    Filed: January 7, 1994
    Date of Patent: July 25, 1995
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Masaru Tsuji, Hiroshige Araki, Hideki Gotoh, Yoshikazu Kondoh, Atsuyuki Kato, Yoshinobu Tateishi, Yuhi Akagawa, Mitsuyoshi Terada, Takashi Sugito, Toshihide Ohgoshi, Naoyuki Yamane
  • Paper feeding device having paper hand feed path
    Patent number: 5308054
    Abstract: A paper feeding device includes paper feed rollers in a paper hand feed path and a paper feed detection switch in front of the paper feed rollers. A drive section is provided for driving the paper feed rollers. A controller is provided such that the paper feed rollers pinch and hold the leading edge of a hand feed sheet of paper when the paper feed detection switch turns on.
    Type: Grant
    Filed: July 1, 1992
    Date of Patent: May 3, 1994
    Assignee: Sharp Kabushiki Kaisha
    Inventor: Takashi Sugito
  • Toner hopper having stirring and feeding rollers
    Patent number: 5243389
    Abstract: A toner hopper is arranged to feed the toner stored in itself to a developing unit and have a stirring roller and a feeding roller respectively supported rotatably, an interlocking mechanism for transmitting the force of rotation to the stirring roller, a manually rotating mechanism for manually rotating the stirring roller, and an interlocking restricting mechanism. The interlocking mechanism restricts the operation of the interlocking mechanism such that the force of rotation of the stirring roller is not transmitted to the feeding roller while the manually rotating mechanism supplies force of rotation to the stirring roller.
    Type: Grant
    Filed: June 12, 1992
    Date of Patent: September 7, 1993
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Naoyuki Yamane, Keiji Kato, Katsuzo Uchida, Miki Demoto, Hisashi Kunihiro, Hiroshi Kawahito, Yasuo Imai, Masato Asanuma, Yukinori Andou, Takashi Sugito