Patents by Inventor Toshimi Hattori

Toshimi Hattori 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).

  • Image developing apparatus having developer seal
    Patent number: 6341206
    Abstract: An image developing apparatus has a photosensitive body, an image-developing roller, a toner feeding roller, a housing cassette, whereon the image-developing roller and the feeding roller are mounted, for storing the toner, a plate-like blade mounted on the housing cassette, a sheet member for preventing the toner from leaking, and toner sealing devices made of a resilient material for preventing the toner from leaking. The sheet member is displaced between a development area of the developing roller and a position of the pressed contact between the developing roller and the feeding roller. The sheet member maintains a uniformly contact along a longitudinal direction of the developing roller. The toner sealing devices are either mounted integrally to, or formed integrally with the blade as one unit, and provided at both ends of the blade. A space is provided between the toner sealing devices and the housing cassette.
    Type: Grant
    Filed: June 8, 2000
    Date of Patent: January 22, 2002
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Naoki Yamaguchi, Junichi Tanizaki, Takeshi Houman, Toshimi Hattori, Yoshihiro Mizoguchi, Yoshiaki Ijima, Yuzo Kawano
  • Image forming apparatus
    Patent number: D445822
    Type: Grant
    Filed: August 30, 2000
    Date of Patent: July 31, 2001
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Takashi Tosa, Toshimi Hattori, Tamio Kayahara, Kenji Fukuda, Kazuhiro Seguchi