Patents by Inventor Toshiaki Nagashima

Toshiaki Nagashima 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).

  • Patent number: 6088552
    Abstract: A developer accommodating container and a developing device that require less force to pull out a sealing member thereby to permit easier opening of the developer accommodating container.
    Type: Grant
    Filed: June 3, 1999
    Date of Patent: July 11, 2000
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hiroumi Morinaga, Toshiaki Nagashima
  • Patent number: 5934475
    Abstract: A container for receiving an ink jet head cartridge is provided with a plate-shaped member and a container main body which forms a space to accommodate an ink jet head cartridge by being coupled with the plate-shaped member. The container main body has a wall section which does not contact the ink jet head cartridge and a recess portion which projects from the wall section toward the accommodating space to contact and support the ink jet head cartridge.
    Type: Grant
    Filed: August 29, 1994
    Date of Patent: August 10, 1999
    Assignee: Canon Kabushiki Kaisha
    Inventors: Norio Hikake, Toshiaki Nagashima
  • Patent number: 5850238
    Abstract: A sealed ink jet assembly which is removable from an ink jet apparatus includes an ink jet head which has an ejection outlet found at a first surface of the ink jet head, an energy generating element for generating energy to eject ink through the ejection outlet, and an electric contact portion for supplying an electric signal from the ink jet apparatus to the energy generating element by mounting the electric contact portion to the ink jet apparatus. The electric contact portion is provided on the surface of the ink jet head which differs from the first surface, and an integral sealing member covers both the ink ejection outlet and the electric contact portion. The integral sealing member is removed when the assembly is mounted onto the ink jet apparatus.
    Type: Grant
    Filed: August 13, 1993
    Date of Patent: December 15, 1998
    Assignee: Canon Kabushiki Kaisha
    Inventors: Seiichiro Karita, Hideo Saikawa, Hiroshi Sugitani, Yoshifumi Hattori, Masami Ikeda, Asao Saito, Kazuaki Masuda, Akio Saito, Tsuyoshi Orikasa, Toshiaki Nagashima, Norio Hikake
  • Patent number: 5832349
    Abstract: The present ivention provides a toner replenishing container comprising a bag made of a film, and an opening member for opening the bag by tearing it. After the unsealing, a bottom of the bag is completely opened.
    Type: Grant
    Filed: March 25, 1997
    Date of Patent: November 3, 1998
    Assignee: Canon Kabshiki Kaisha
    Inventor: Toshiaki Nagashima
  • Patent number: 5832343
    Abstract: A method of supplying toner into a toner accommodation container for accommodating the toner to be used for developing a latent image formed on an electrophotographic photosensitive member includes opening a cover member for covering an opening provided in a toner accommodation container; mounting a first toner supply container containing the toner to be supplied to the toner accommodation container, to the opening; pushing the first toner supply container into the toner accommodation container in interrelation with closing of the cover member; closing the cover member; supplying the toner from the first toner supply container to the toner accommodation container by opening a toner supply port of the first toner supply container pushed in the toner accommodation container; wherein a volume of the first toner supply container can be reduced in a direction crossing with a longitudinal direction of the toner supply container.
    Type: Grant
    Filed: March 29, 1996
    Date of Patent: November 3, 1998
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kazunori Kobayashi, Tadayuki Tsuda, Shinichi Sasaki, Isao Ikemoto, Toshiaki Nagashima, Hiroomi Matsuzaki, Kazuo Chadani
  • Patent number: 5802431
    Abstract: A toner supply container for supplying toner to a toner accommodation container for containing toner to be used for developing a latent image formed on an electrophotographic photosensitive member includes a flexible toner accommodating portion having side walls at longitudinal opposite ends, the side walls having respective inward projected portions so that the toner accommodating portion is collapsed when external force is applied thereto; an opening, provided in the toner container, for permitting supply of the toner from the toner accommodating portion to the toner accommodation container; a sealing member for removably sealing the opening; wherein when the external force is applied, the toner accommodating portion is collapsed while the projected portion being folded, so that a volume of toner accommodating portion is reduced in a direction crossing with a longitudinal direction thereof.
    Type: Grant
    Filed: March 29, 1996
    Date of Patent: September 1, 1998
    Assignee: Canon Kabushiki Kaisha
    Inventors: Toshiaki Nagashima, Tadayuki Tsuda, Kazunori Kobayashi, Kazuo Chadani
  • Patent number: 5778282
    Abstract: A guide surface for engaging by a flexible film member closing a developer discharge opening of a developer supplying container is disposed at a downstream side of an elastic seal member against which the film is slidingly contacted when the film is pulled out, whereby the film is bent convexly against the elastic seal member.
    Type: Grant
    Filed: May 14, 1997
    Date of Patent: July 7, 1998
    Assignee: Canon Kabushiki Kaisha
    Inventor: Toshiaki Nagashima
  • Patent number: 5649270
    Abstract: A developer container includes a container portion having an opening through which developer is supplied in or out; a shutter member for opening and closing the opening; a slide-guide for guiding the shutter member; a recess on a surface of the slide guide on which the shutter member slides.
    Type: Grant
    Filed: October 16, 1995
    Date of Patent: July 15, 1997
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kazuhiko Omata, Toshiaki Nagashima, Kyota Miyazaki
  • Patent number: 5593068
    Abstract: A toner cartridge mountable to a cartridge mount of a main assembly of an image forming apparatus comprising an electrostatic latent image bearing member, and a toner container for containing toner for developing an electrostatic latent image on the image bearing member, wherein the cartridge is disposable in a mounting position, where the toner cartridge can be mounted on or dismounted from the cartridge mount, and a toner supply position, where toner can be supplied into the container from the toner cartridge. When toner is to be supplied into the container, the toner cartridge is rotated in a predetermined direction from the mounting position to the supply position, and when the toner cartridge is to be dismounted from the cartridge mount, the toner cartridge is rotated in the opposite direction. The toner cartridge includes a container body for containing the toner, and a toner discharge opening is provided in the container body for discharging toner from the container body.
    Type: Grant
    Filed: June 27, 1994
    Date of Patent: January 14, 1997
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kunihiko Kitayama, Toshiaki Nagashima, Kiyoshi Oyama
  • Patent number: 5491542
    Abstract: A developer supply container includes a developer containing portion having an opening for supplying the developer therefrom; a shutter for closing the opening; a shutter support for supporting the shutter for movement between a closing position where the shutter closes the opening and an opening position where the shutter is retracted from the closing position to open the opening; and a seal mounted on such a side of the shutter as is faced to the opening.
    Type: Grant
    Filed: June 6, 1994
    Date of Patent: February 13, 1996
    Assignee: Canon Kabushiki Kaisha
    Inventors: Toshiaki Nagashima, Kunihiko Kitayama, Kiyoshi Oyama
  • Patent number: 5262802
    Abstract: A recording head is proposed having an ejection outlet for ejecting recording ink, and a container for the recording ink having an air vent. A single sealing member seals both the ejection outlet and the air vent so that when this sealing member is removed, both the ejection outlet and the air vent are unsealed.
    Type: Grant
    Filed: September 17, 1990
    Date of Patent: November 16, 1993
    Assignee: Canon Kabushiki Kaisha
    Inventors: Seiichiro Karita, Hideo Saikawa, Hiroshi Sugitani, Yoshifumi Hattori, Masami Ikeda, Asao Saito, Kazuaki Masuda, Akio Saito, Tsuyoshi Orikasa, Toshiaki Nagashima, Norio Hikake
  • Patent number: 5244087
    Abstract: A container for receiving an ink jet head cartridge is provided with a plate-shaped member and a container main body which forms a space to accommodate an ink jet head cartridge by being coupled with the plate-shaped member. The container main body has a wall section which does not contact the ink jet head cartridge and a recess portion which projects from the wall section toward the accommodating space to contact and support the ink jet head cartridge.
    Type: Grant
    Filed: November 30, 1990
    Date of Patent: September 14, 1993
    Assignee: Canon Kabushiki Kaisha
    Inventors: Norio Hikake, Toshiaki Nagashima
  • Patent number: 4931838
    Abstract: A second chamber containing a developer and a first chamber within which a developing roller for applying the developer to an image bearing member is arranged are partitioned by a flexible film. The second chamber includes a developer conveying member by which the developer is conveyed into the first chamber through an opening formed in the flexible film. The opening is formed by tearing the flexible film by means of a tear tape.
    Type: Grant
    Filed: February 23, 1989
    Date of Patent: June 5, 1990
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yutaka Ban, Toshiaki Nagashima
  • Patent number: 4775102
    Abstract: In a motorcar space heating system of the type having a heat pipe comprising a heat absorbing element for receiving heat from the exhaust gas of the motorcar engine and a heat discharging element for heating air flowing into a car interior space to be heated, the heat pipe is separated, at an intermediate heat exchanger installed in a working fluid passage connecting the heat absorbing and discharging elements, into a heat absorbing section and a heat discharging section. The working fluids within these two sections are therefore not intermingled with each other. A pipe extends from the intermediate heat exchanger so as to be communicative at one end thereof with the heat absorbing section. The other end of the pipe extends into a working fluid reservoir tank.
    Type: Grant
    Filed: December 11, 1987
    Date of Patent: October 4, 1988
    Assignee: Sanoh Kogyo Kabushiki Kaisha
    Inventors: Shigeyuki Negishi, Toshiaki Nagashima, Hideaki Nakagawa
  • Patent number: D353615
    Type: Grant
    Filed: September 29, 1992
    Date of Patent: December 20, 1994
    Assignee: Canon Kabushiki Kaisha
    Inventors: Nobuyuki Agata, Toshiaki Nagashima
  • Patent number: D362676
    Type: Grant
    Filed: June 20, 1994
    Date of Patent: September 26, 1995
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hisakazu Shimizu, Toshiaki Nagashima
  • Patent number: D373787
    Type: Grant
    Filed: March 27, 1995
    Date of Patent: September 17, 1996
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masataka Isomoto, Toshiaki Nagashima
  • Patent number: D374249
    Type: Grant
    Filed: March 27, 1995
    Date of Patent: October 1, 1996
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masataka Isomoto, Toshiaki Nagashima
  • Patent number: D375322
    Type: Grant
    Filed: September 27, 1995
    Date of Patent: November 5, 1996
    Assignee: Canon Kabushiki Kaisha
    Inventors: Toshiaki Nagashima, Ei Yamamoto, Kunihiko Kitayama
  • Patent number: D376170
    Type: Grant
    Filed: September 27, 1995
    Date of Patent: December 3, 1996
    Assignee: Canon Kabushiki Kaisha
    Inventors: Toshiaki Nagashima, Ei Yamamoto, Kunihiko Kitayama