Patents by Inventor Kyousuke Taka

Kyousuke Taka 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).

  • Paper-punching device for use in a image-forming apparatus
    Patent number: 6014920
    Abstract: In a paper-punching device for use in an image-forming apparatus, the rear edge of a sheet of paper that is being transported through a transport guide is detected by the photosensor. After a predetermined time has passed since the detection, a punching device is activated. At this time, a punching member is depressed downward, and a punching blade attached to its top penetrates through the sheet of paper, thereby forming a punch hole. Even during the punching operation, transport rollers continue to rotate. Therefore, when the sheet of paper is caught by the punching blade, the transport rollers are allowed to slip predetermined amount with respect to the paper. For this reason, at least one of the transport rollers is made of a foamed material. With this arrangement, since the punching operation is carried out on the rear side of the sheet of paper, it becomes possible to reduce the occurrence of paper jams even if sheets of paper are transported in succession.
    Type: Grant
    Filed: September 16, 1998
    Date of Patent: January 18, 2000
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Yasuji Yamauchi, Toshio Yamanaka, Masafumi Okumura, Masashi Hirai, Kyousuke Taka, Kinji Uno, Yoshiharu Yoneda, Hirokazu Yamauchi
  • Paper-punching device for use in an image-forming apparatus
    Patent number: 5839336
    Abstract: In a paper-punching device for use in an image-forming apparatus, the rear edge of a sheet of paper that is being transported through a transport guide is detected by the photosensor. After a predetermined time has passed since the detection, a punching device is activated. At this time, a punching member is depressed downward, and a punching blade attached to its top penetrates through the sheet of paper, thereby forming a punch hole. Even during the punching operation, transport rollers continue to rotate. Therefore, when the sheet of paper is caught by the punching blade, the transport rollers are allowed to slip a predetermined amount with respect to the paper. For this reason, at least one of the transport rollers is made of a foamed material. With this arrangement, since the punching operation is carried out on the rear side of the sheet of paper, it becomes possible to reduce the occurrence of paper jams even if sheets of paper are transported in succession.
    Type: Grant
    Filed: December 17, 1996
    Date of Patent: November 24, 1998
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Yasuji Yamauchi, Toshio Yamanaka, Masafumi Okumura, Masashi Hirai, Kyousuke Taka, Kinji Uno, Yoshiharu Yoneda, Hirokazu Yamauchi
  • Sheet handling apparatus
    Patent number: D403349
    Type: Grant
    Filed: December 23, 1997
    Date of Patent: December 29, 1998
    Assignees: Sharp Kabushiki Kaisha, Nisca Corporation
    Inventors: Tomoyuki Hirose, Toyoaki Nanba, Kyousuke Taka, Kazuyuki Kubota, Hideki Mimura