Patents by Inventor Toru Okumura

Toru Okumura 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).

  • Method for manufacturing an ink jet head having a treated surface, ink jet head made thereby, and ink jet apparatus having such head
    Patent number: 5682187
    Abstract: An ink jet recording head, which can be used in a recording apparatus, is manufactured by preparing a first base plate provided with an energy generating structure for generating energy to discharge ink, preparing a second base plate provided with a discharge opening plate member on which are to be formed ink discharge openings for discharging the ink and recessed portions for forming ink flow paths, the ink flow paths being communicated with the discharge openings, and applying an ink repellant treatment on a surface of the discharge opening plate at a side where the ink is to be discharged in at least an area where the discharge openings are to be formed.
    Type: Grant
    Filed: October 31, 1996
    Date of Patent: October 28, 1997
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takashi Watanabe, Kazuaki Masuda, Akira Goto, Hiroshi Kono, Takashi Kanzaki, Toshio Kashino, Akio Saito, Koyo Midorikawa, Toru Okumura, Masami Ikeda, Nobuyuki Kuwabara
  • Method for producing regenerated cylinder, method for producing regenerated electrophotography photosensitive drum employing the method, and bulging apparatus for the methods
    Patent number: 5400630
    Abstract: Flanges used in a photosensitive drum to be regenerated are assembled in a regenerated electrophotography photosensitive drum employing a regenerated cylinder having a diameter enlarged by regeneration processes.The regenerated electrophotography photosensitive drum is obtained by enlarging the diameter of the photosensitive drum to be regenerated whose photosensitive film has not functioned normally because of being used up or damaged during preparation or the like, cutting off the surface, including the photosensitive film, of the cylinder with predetermined precision with respect to the outer diameter and the surface, and forming a photosensitive film on the resultant regenerated cylinder.
    Type: Grant
    Filed: June 17, 1993
    Date of Patent: March 28, 1995
    Assignee: Canon Kabushiki Kaisha
    Inventors: Toru Okumura, Eiichi Kato, Yasuyoshi Takai
  • Ink jet head and manufacturing method thereof, and ink jet apparatus with ink jet head
    Patent number: 5208604
    Abstract: The present invention relates to a method for manufacturing an ink jet recording head having an ink path communicated with a discharge opening, a discharge energy generating element disposed in the ink path and a discharge opening plate on which the discharge opening is formed. The discharge opening plate is attached to an end surface of the ink path. The discharge opening is formed by irradiating an excimer laser light on the discharge opening plate from a side of the plate which is attached to the ink path.
    Type: Grant
    Filed: August 26, 1991
    Date of Patent: May 4, 1993
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takashi Watanabe, Kazuaki Masuda, Akira Goto, Hiroshi Kono, Takashi Kanzaki, Toshio Kashino, Akio Saito, Koyo Midorikawa, Toru Okumura, Masami Ikeda, Nobuyuki Kuwabara
  • Metal drum and image holding member using the same
    Patent number: 4621919
    Abstract: An image holding member for electrophotography has a metal drum, one side face of which is formed integrally with the peripheral face of the drum. And the image holding member has at the center of said side face a rotatory drum supporting shaft formed integrally with said side face.
    Type: Grant
    Filed: July 13, 1983
    Date of Patent: November 11, 1986
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hiroshi Nitanda, Morikazu Mizutani, Taketoshi Yokoyama, Jun Tamai, Toru Okumura
  • Single lens reflex camera body
    Patent number: 4417796
    Abstract: A mirror box formed of metal serves as a metallic portion constituting together with a plastic portion an essential part for imparting strength characteristics to a camera body. The metallic portion is provided with a base for a lens mount and with similar parts for assembling other element. During molding, some of the metallic segments of the lens mount base are inserted as a framework into the plastic portion so that the metallic and plastic portions are constructed in the form of a unit. This unit is then assembled with other portions as the base unit of the essential part to complete a single lens reflex camera body.
    Type: Grant
    Filed: November 4, 1981
    Date of Patent: November 29, 1983
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yoji Sugiura, Toshio Hagiwara, Toru Okumura, Syunichi Nakahara