Patents by Inventor Tetsuroh Tanigawa

Tetsuroh Tanigawa 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: 7522850
    Abstract: A carrier and a dummy toner are stored in a developing unit of a process cartridge in a brand new status. A plurality of process cartridges corresponding to a plurality of color toners is used in common. The color toners are respectively supplied to the developing unit from toner supply units after the process cartridges in the brand new status are installed in installation sections in a main unit of an image forming apparatus.
    Type: Grant
    Filed: November 17, 2006
    Date of Patent: April 21, 2009
    Assignee: Ricoh Company, Ltd.
    Inventors: Kazuhito Watanabe, Satoshi Narumi, Shinji Tamaki, Satoshi Hatori, Tsutomu Katoh, Haruji Mizuishi, Tetsuroh Tanigawa, Misao Tanzawa
  • Patent number: 7493061
    Abstract: A process cartridge is provided with a frame body made up of at least first and second frame bodies that are movable relative to each other to form a space, a frame body positioning member positioning the first and second frame bodies, a latent image bearing member supported by the frame body and replaceable via the space formed by the first and second frame bodies, a developing unit supplying a developing agent to the latent image bearing member, and a developing position determining member. The developing position determining member is disposed at a non-overlapping position relative to the frame body positioning member, and positions the developing unit with respect to the frame body.
    Type: Grant
    Filed: August 24, 2004
    Date of Patent: February 17, 2009
    Assignee: Ricoh Company, Ltd.
    Inventors: Satoshi Hatori, Kazuhito Watanabe, Satoshi Narumi, Shinji Tamaki, Tsutomu Katoh, Haruji Mizuishi, Tetsuroh Tanigawa
  • Publication number: 20070071499
    Abstract: A carrier and a dummy toner are stored in a developing unit of a process cartridge in a brand new status. A plurality of process cartridges corresponding to a plurality of color toners is used in common. The color toners are respectively supplied to the developing unit from toner supply units after the process cartridges in the brand new status are installed in installation sections in a main unit of an image forming apparatus.
    Type: Application
    Filed: November 17, 2006
    Publication date: March 29, 2007
    Inventors: Kazuhito WATANABE, Satoshi Narumi, Shinji Tamaki, Satoshi Hatori, Tsutomu Katoh, Haruji Mizuishi, Tetsuroh Tanigawa, Misao Tanzawa
  • Patent number: 7158730
    Abstract: A carrier and a dummy toner are stored in a developing unit of a process cartridge in a brand new status. A plurality of process cartridges corresponding to a plurality of color toners is used in common. The color toners are respectively supplied to the developing unit from toner supply units after the process cartridges in the brand new status are installed in installation sections in a main unit of an image forming apparatus.
    Type: Grant
    Filed: August 6, 2004
    Date of Patent: January 2, 2007
    Assignee: Ricoh Company, Ltd.
    Inventors: Kazuhito Watanabe, Satoshi Narumi, Shinji Tamaki, Satoshi Hatori, Tsutomu Katoh, Haruji Mizuishi, Tetsuroh Tanigawa, Misao Tanzawa
  • Patent number: 7031982
    Abstract: A publication information acquisition apparatus used by a user of a service converts information extracted from a newspaper into electronic information and transmits the electronic information to a publication information providing apparatus. The publication information providing apparatus decodes the electronic information, acquires key information for searching for characters and/or an image from the decoded electronic information, and searches newspaper information in a database based on the key information. The publication information providing apparatus acquires the name of a newspaper and the date of issue thereof as confirmation information and transmits the confirmation information to the publication information acquisition apparatus. It is therefore possible to easily know from which newspaper the extraction is acquired and when the newspaper was issued.
    Type: Grant
    Filed: May 15, 2002
    Date of Patent: April 18, 2006
    Assignee: Ricoh Company, Ltd.
    Inventors: Tetsuroh Tanigawa, Mikuni Murata, Shunzoh Mogi, Tohru Shimizu
  • Publication number: 20060045603
    Abstract: A process cartridge is provided with a frame body made up of at least first and second frame bodies that are movable relative to each other to form a space, a frame body positioning member positioning the first and second frame bodies, a latent image bearing member supported by the frame body and replaceable via the space formed by the first and second frame bodies, a developing unit supplying a developing agent to the latent image bearing member, and a developing position determining member. The developing position determining member is disposed at a non-overlapping position relative to the frame body positioning member, and positions the developing unit with respect to the frame body.
    Type: Application
    Filed: August 24, 2004
    Publication date: March 2, 2006
    Inventors: Satoshi Hatori, Kazuhito Watanabe, Satoshi Narumi, Shinji Tamaki, Tsutomu Katoh, Haruji Mizuishi, Tetsuroh Tanigawa
  • Publication number: 20050063713
    Abstract: A carrier and a dummy toner are stored in a developing unit of a process cartridge in a brand new status. A plurality of process cartridges corresponding to a plurality of color toners is used in common. The color toners are respectively supplied to the developing unit from toner supply units after the process cartridges in the brand new status are installed in installation sections in a main unit of an image forming apparatus.
    Type: Application
    Filed: August 6, 2004
    Publication date: March 24, 2005
    Inventors: Kazuhito Watanabe, Satoshi Narumi, Shinji Tamaki, Satoshi Hatori, Tsutomu Katoh, Haruji Mizuishi, Tetsuroh Tanigawa, Misao Tanzawa
  • Publication number: 20020174271
    Abstract: A publication information acquisition apparatus used by a user of a service converts information extracted from a newspaper into electronic information and transmits the electronic information to a publication information providing apparatus. The publication information providing apparatus decodes the electronic information, acquires key information for searching for characters and/or an image from the decoded electronic information, and searches newspaper information in a database based on the key information. The publication information providing apparatus acquires the name of a newspaper and the date of issue thereof as confirmation information and transmits the confirmation information to the publication information acquisition apparatus. It is therefore possible to easily know from which newspaper the extraction is acquired and when the newspaper was issued.
    Type: Application
    Filed: May 15, 2002
    Publication date: November 21, 2002
    Inventors: Tetsuroh Tanigawa, Mikuni Murata, Shunzoh Mogi, Tohru Shimizu