Patents by Inventor Hiroki Kyushima

Hiroki Kyushima 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).

  • Driving mechanism for turning a photosensitive drum in an electrophotographic copying machine
    Patent number: 4671645
    Abstract: The present invention relates to a driving mechanism for turning a photosensitive drum in an electrophotographic copying machine, which is provided with a brake loading means to brake the turning force of the drum, and is characterized in that the brake loading means comprises a brake loading device for a power transmitting means arranged between the drum and a motor and a brake loading device for the drum.The former device applies a predetermined frictional braking force to the turning of at least one follower axis in the power transmitting means and eliminates adverse effects of backlashes existing between the motor and the follower axis with respect to the turning stability of the drum. The latter device eliminates adverse effects of backlashes existing between the follower axis and the drum as the same above.
    Type: Grant
    Filed: April 23, 1986
    Date of Patent: June 9, 1987
    Assignee: Dainippon Screen Mgf. Co., Ltd.
    Inventors: Masashi Saito, Tsutau Shimamura, Kojiro Henmi, Hiroki Kyushima
  • Method and apparatus for electrophotographically reproducing a desired portion of an original on copying paper
    Patent number: 4641951
    Abstract: A method and apparatus for reproducing a desired portion of letters and/or patterns in an original on a copying paper, wherein the system is computerized so as to obtain the necessary information from the data stored with respect to the distance components derived from the original, and on the basis of the information, an area excluding the desired portion of the original is deelectrified so as to exclude the area from the expected reproduction of the desired portion on the copying paper.
    Type: Grant
    Filed: June 18, 1985
    Date of Patent: February 10, 1987
    Assignee: Dainippon Screen Mfg. Co., Ltd.
    Inventors: Tsuneo Takagi, Kenjiro Tanabe, Masao Fukushima, Hiroki Kyushima, Kiyoshi Takenaka, Akira Okada, Yoshinor Isogaki