Patents by Inventor Shin-ichi Kawahara

Shin-ichi Kawahara 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: 5950062
    Abstract: A toner sorting device includes a device for taking in used toner conveyed from an image forming apparatus and conveying the used toner in one direction, and a device for sifting the used toner conveyed from the intake device to separate reusable toner from the used toner. The sifting device includes a tubular sieve for separating reusable toner from the used toner and a device for holding the sieve so that the sieve is rotatable. The sieve has an opening for receiving the used toner conveyed from the intake device to be moved into the sifting device and an opening for discharging the remaining toner separated from the reusable toner and remaining inside the sifting device. The toner sorting device further includes a device for collecting the reusable toner separated from the used toner by the sifting device and a device for collecting the remaining toner discharged from the sifting device. The toner sorting device further includes a device for accelerating sifting of the used toner by the sifting device.
    Type: Grant
    Filed: January 14, 1998
    Date of Patent: September 7, 1999
    Assignee: Ricoh Co., Ltd.
    Inventors: Masasumi Yahata, Shunji Katoh, Yuji Kitajima, Satoshi Takano, Shin-ichi Kawahara, Fumihito Itoh, Tsutomu Katoh
  • Patent number: 5923936
    Abstract: An image forming apparatus which utilizes an intermediate transfer belt. A cleaning device is provided to remove residual toner, etc., from the intermediate transfer belt and the cleaning device includes a cleaning blade, a bias roller, and a bias roller cleaning blade. The bias roller rotates in a same direction as that of the image transfer belt. Further, the cleaning blade and the bias roller cleaning blade can be of a same length and can be mounted to a same holder. The positioning of the bias roller and the bias roller cleaning blade can be offset towards a front portion of the image forming device relative to the image transfer belt cleaning blade, to ensure that toner which deposits on a front end of the image transfer belt, even if outside of an effective image area on the image transfer belt, is removed.
    Type: Grant
    Filed: March 20, 1998
    Date of Patent: July 13, 1999
    Assignee: Ricoh Company, Ltd.
    Inventors: Ryou Tanoue, Shin-ichi Kawahara
  • Patent number: 4900909
    Abstract: An apparatus for issuing plane tickets by communicating with a host apparatus using data from a keyboard or a bar code reader includes a hopper for storing plane tickets having a magnetic stripe extending along the longer sides thereof. A convey mechanism picks up the plane tickets one by one from the hopper and conveys the ticket on a convey path while aligning the shorter sides of the card with the convey direction.
    Type: Grant
    Filed: June 24, 1988
    Date of Patent: February 13, 1990
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Masayoshi Nagashima, Shin-ichi Kawahara
  • Patent number: 4279883
    Abstract: In a process for preparing hydrogen peroxide by reacting hydrogen with oxygen in the presence of a catalyst in an aqueous medium containing hydrogen peroxide, the improvement which comprises using an aqueous medium which contains dissolved hydrogen and a platinum-group catalyst having adsorbed thereto hydrogen.
    Type: Grant
    Filed: December 3, 1976
    Date of Patent: July 21, 1981
    Assignee: Tokuyama Soda Kabushiki Kaisha
    Inventors: Yusuke Izumi, Hidetaka Miyazaki, Shin-ichi Kawahara
  • Patent number: 4009252
    Abstract: A process for preparing hydrogen peroxide which comprises reacting hydrogen with oxygen in an aqueous medium containing a platinum-group catalyst, characterized in that the partial pressure of hydrogen and the partial pressure of oxygen in the gaseous phase of the reaction system are maintained at at least 0.5 atmosphere and at least 1.0 atmosphere respectively, and the platinum group catalyst is caused to be present in an amount, calculated as metal, of at least a minimum effective catalytic amount up to 30 mg per 100 ml. of said aqueous medium.
    Type: Grant
    Filed: June 23, 1975
    Date of Patent: February 22, 1977
    Assignee: Tokuyama Soda Kabushiki Kaisha
    Inventors: Yusuke Izumi, Hidetaka Miyazaki, Shin-ichi Kawahara