Patents by Inventor Tadasuke Yoshida

Tadasuke Yoshida 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).

  • Full-color electrophotographic apparatus using liquid toner containing resin
    Patent number: 6996361
    Abstract: A full-color electrophotographic apparatus of the present invention is configured such that a toner image is formed on an intermediate transfer member. The intermediate transfer member is heated to a temperature equal to or higher than the softening start temperature of resin contained in a liquid toner and equal to or lower than the withstand temperature of a photoconductor member. A carrier-removing roller to which bias can be applied abuts the intermediate transfer member so as to remove a carrier while packing softened toner by the force of an electric field induced by bias. In a transfer section for transfer to a printing medium, a backup roller presses the printing medium against the intermediate transfer member, and the toner image is transferred from the intermediate transfer member to the printing medium. Before being pressed against the toner image on the intermediate transfer member, the printing medium is heated.
    Type: Grant
    Filed: January 28, 2003
    Date of Patent: February 7, 2006
    Assignee: PFU Limited
    Inventors: Motoharu Ichida, Satoshi Moriguchi, Yasuhiko Kishimoto, Masanobu Hongo, Shigeki Uesugi, Yoshiro Kawamoto, Seiichi Takeda, Tadasuke Yoshida, Yoshiaki Fujimoto, Jiyun Du, Hironaga Hongawa, Eri Yamanishi, Tatsuo Nozaki, Shigeharu Okano, Isao Nagata
  • Full-color electrophotographic device using liquid toner
    Publication number: 20040175208
    Abstract: A full-color electrophotographic apparatus of the present invention is configured such that a toner image is formed on an intermediate transfer member. The intermediate transfer member is heated to a temperature equal to or higher than the softening start temperature of resin contained in a liquid toner and equal to or lower than the withstand temperature of a photoconductor member. A carrier-removing roller to which bias can be applied abuts the intermediate transfer member so as to remove a carrier while packing softened toner by the force of an electric field induced by bias. In a transfer section for transfer to a printing medium, a backup roller presses the printing medium against the intermediate transfer member, and the toner image is transferred from the intermediate transfer member to the printing medium. Before being pressed against the toner image on the intermediate transfer member, the printing medium is heated.
    Type: Application
    Filed: December 22, 2003
    Publication date: September 9, 2004
    Inventors: Motoharu Ichida, Satoshi Moriguchi, Yasuhiko Kishimoto, Masanobu Hongo, Shigeki Uesugi, Yoshiro Kawamoto, Seiichi Takeda, Tadasuke Yoshida, Yoshiaki Fujimoto, Jiyun Du, Hironaga Hongawa, Eri Yamanishi, Tatsuo Nozaki, Shigeharu Okano, Isao Nagata
  • Toner recycle control system of electrophotographing device using viscous liquid developing solution
    Patent number: 6687477
    Abstract: The present invention provides a toner recycling control system which stably feeds a liquid developer of an appropriate concentration to a liquid developing apparatus employing a high-viscosity liquid developer; appropriately adjusts the concentration of residual developer collected after development and after transfer; and feeds the adjusted developer to the developing apparatus. The toner recycling control system collects a post-development residual developer from a developer-bearing body and a post-transfer residual developer from an image-bearing body; performs developer concentration adjustment to yield an adjusted developer; and feeds the adjusted developer back to the developer-bearing body.
    Type: Grant
    Filed: February 14, 2003
    Date of Patent: February 3, 2004
    Assignee: PFU Limited
    Inventors: Motoharu Ichida, Satoshii Moriguchi, Shigeki Uesugi, Yoshiaki Kawamoto, Seiichi Takeda, Tadasuke Yoshida, Yoshiaki Fujimoto, Jiyun Du, Masanobu Hongo, Yasuhiko Kishimoto, Hitoshi Terashima, Satoru Moto, Masanari Takabatake, Hideaki Shibata, Tatsuo Nozaki, Yutaka Nakashima, Tadashi Nishikawa, Akihiko Inamoto, Satoshi Miyamoto
  • Toner recycle control system of electrophotographing device using viscous liquid developing solution
    Publication number: 20030175049
    Abstract: The present invention provides a toner recycling control system which stably feeds a liquid developer of an appropriate concentration to a liquid developing apparatus employing a high-viscosity liquid developer; appropriately adjusts the concentration of residual developer collected after development and after transfer; and feeds the adjusted developer to the developing apparatus. The toner recycling control system collects a post-development residual developer from a developer-bearing body and a post-transfer residual developer from an image-bearing body; performs developer concentration adjustment to yield an adjusted developer; and feeds the adjusted developer back to the developer-bearing body.
    Type: Application
    Filed: February 14, 2003
    Publication date: September 18, 2003
    Inventors: Motoharu Ichida, Satoshii Moriguchi, Shigeki Uesugi, Yoshiaki Kawamoto, Seiichi Takeda, Tadasuke Yoshida, Yoshiaki Fujimoto, Jiyun Du, Masanobu Hongo, Yasuhiko Kishimoto, Hitoshi Terashima, Satoru Moto, Masanari Takabatake, Hideaki Shibata, Tatsuo Nozaki, Yutaka Nakashima, Tadashi Nishikawa, Akihiko Inamoto, Satoshi Miyamoto