Patents by Inventor Kyohji Hattori

Kyohji 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).

  • Patent number: 7447138
    Abstract: A method and apparatus for initializing optical recording media is provided that detects the intensity of a reflective light off of an optical recording media and analyzes the initializing condition based on the detected intensity during an initializing process. The light is radiated on a rotating phase-change optical recording medium. The light may be moved in a radial direction of the optical recording medium. The detected intensity of the reflected light may be used to identify crystallized portions and amorphous portions of the optical media. The initialization process can be adaptively controlled to ensure proper initialization. If desired, re-initialization can be limited to those areas detected to be outside of the predetermined parameters.
    Type: Grant
    Filed: November 4, 2005
    Date of Patent: November 4, 2008
    Assignee: Ricoh Company, Ltd.
    Inventors: Kyohji Hattori, Kenichi Aihara, Katsuyuki Yamada, Fumiya Ohmi, Eiji Noda, Yujiro Kaneko, Yuki Nakamura, Hiroko Iwasaki
  • Publication number: 20060067183
    Abstract: A method and apparatus for initializing optical recording media is provided that detects the intensity of a reflective light off of an optical recording media and analyzes the initializing condition based on the detected intensity during an initializing process. The light is radiated on a rotating phase-change optical recording medium. The light may be moved in a radial direction of the optical recording medium. The detected intensity of the reflected light may be used to identify crystallized portions and amorphous portions of the optical media. The initialization process can be adaptively controlled to ensure proper initialization. If desired, re-initialization can be limited to those areas detected to be outside of the predetermined parameters.
    Type: Application
    Filed: November 4, 2005
    Publication date: March 30, 2006
    Inventors: Kyohji Hattori, Kenichi Aihara, Katsuyuki Yamada, Fumiya Ohmi, Eiji Noda, Yujiro Kaneko, Yuki Nakamura, Hiroko Iwasaki
  • Patent number: 6990053
    Abstract: A method and apparatus for initializing optical recording media is provided that detects the intensity of a reflective light off of an optical recording media and analyzes the initializing condition based on the detected intensity during an initializing process. The light is radiated on a rotating phase-change optical recording medium. The light may be moved in a radial direction of the optical recording medium. The detected intensity of the reflected light may be used to identify crystallized portions and amorphous portions of the optical media. The initialization process can be adaptively controlled to ensure proper initialization. If desired, re-initialization can be limited to those areas detected to be outside of the predetermined parameters.
    Type: Grant
    Filed: April 13, 2004
    Date of Patent: January 24, 2006
    Assignee: Ricoh Company, Ltd.
    Inventors: Kyohji Hattori, Kenichi Aihara, Katsuyuki Yamada, Fumiya Ohmi, Eiji Noda, Yujiro Kaneko, Yuki Nakamura, Hiroko Iwasaki
  • Publication number: 20040190394
    Abstract: A method and apparatus for initializing optical recording media is provided that detects the intensity of a reflective light off of an optical recording media and analyzes the initializing condition based on the detected intensity during an initializing process. The light is radiated on a rotating phase-change optical recording medium. The light may be moved in a radial direction of the optical recording medium. The detected intensity of the reflected light may be used to identify crystallized portions and amorphous portions of the optical media. The initialization process can be adaptively controlled to ensure proper initialization. If desired, re-initialization can be limited to those areas detected to be outside of the predetermined parameters.
    Type: Application
    Filed: April 13, 2004
    Publication date: September 30, 2004
    Inventors: Kyohji Hattori, Kenichi Aihara, Katsuyuki Yamada, Fumiya Ohmi, Eiji Noda, Yujiro Kaneko, Yuki Nakamura, Hiroko Iwasaki
  • Patent number: 6775213
    Abstract: A method and apparatus for initializing optical recording media is provided that detects the intensity of a reflective light off of an optical recording media and analyzes the initializing condition based on the detected intensity during an initializing process. The light is radiated on a rotating phase-change optical recording medium. The light may be moved in a radial direction of the optical recording medium. The detected intensity of the reflected light may be used to identify crystallized portions and amorphous portions of the optical media. The initialization process can be adaptively controlled to ensure proper initialization. If desired, re-initialization can be limited to those areas detected to be outside of the predetermined parameters.
    Type: Grant
    Filed: February 25, 2003
    Date of Patent: August 10, 2004
    Assignee: Ricoh Company, Ltd.
    Inventors: Kyohji Hattori, Kenichi Aihara, Katsuyuki Yamada, Fumiya Ohmi, Eiji Noda, Yujiro Kaneko, Yuki Nakamura, Hiroko Iwasaki
  • Patent number: 6760291
    Abstract: A method and apparatus for initializing optical recording media is provided that detects the intensity of a reflective light off of an optical recording media and analyzes the initializing condition based on the detected intensity during an initializing process. The light is radiated on a rotating phase-change optical recording medium. The light may be moved in a radial direction of the optical recording medium. The detected intensity of the reflected light may be used to identify crystallized portions and amorphous portions of the optical media. The initialization process can be adaptively controlled to ensure proper initialization. If desired, re-initialization can be limited to those areas detected to be outside of the predetermined parameters.
    Type: Grant
    Filed: February 25, 2003
    Date of Patent: July 6, 2004
    Assignee: Ricoh Company, Ltd.
    Inventors: Kyohji Hattori, Kenichi Aihara, Katsuyuki Yamada, Fumiya Ohmi, Eiji Noda, Yujiro Kaneko, Yuki Nakamura, Hiroko Iwasaki
  • Patent number: 6660452
    Abstract: An optical information memory medium, including, in the stated order a substrate, an optical information memory layer which is capable of memorizing information therein, and a reversible display recording layer which is capable of rewritably recording therein, in a visibly recognizable form, at least part of an information corresponding to the information memorized in the optical information memory layer, and a display recording method using the optical information memory medium are disclosed.
    Type: Grant
    Filed: February 26, 2002
    Date of Patent: December 9, 2003
    Assignee: Ricoh Company, Ltd.
    Inventors: Hiroko Iwasaki, Kenichi Aihara, Kyohji Hattori, Akihiko Okamoto, Yoshihiko Hotta, Naoshi Mishima, Tetsuo Watanabe
  • Publication number: 20030152003
    Abstract: A method and apparatus for initializing optical recording media is provided that detects the intensity of a reflective light off of an optical recording media and analyzes the initializing condition based on the detected intensity during an initializing process. The light is radiated on a rotating phase-change optical recording medium. The light may be moved in a radial direction of the optical recording medium. The detected intensity of the reflected light may be used to identify crystallized portions and amorphous portions of the optical media. The initialization process can be adaptively controlled to ensure proper initialization. If desired, re-initialization can be limited to those areas detected to be outside of the predetermined parameters.
    Type: Application
    Filed: February 25, 2003
    Publication date: August 14, 2003
    Inventors: Kyohji Hattori, Kenichi Aihara, Katsuyuki Yamada, Fumiya Ohmi, Eiji Noda, Yujiro Kaneko, Yuki Nakamura, Hiroko Iwasaki
  • Publication number: 20030152002
    Abstract: A method and apparatus for initializing optical recording media is provided that detects the intensity of a reflective light off of an optical recording media and analyzes the initializing condition based on the detected intensity during an initializing process. The light is radiated on a rotating phase-change optical recording medium. The light may be moved in a radial direction of the optical recording medium. The detected intensity of the reflected light may be used to identify crystallized portions and amorphous portions of the optical media. The initialization process can be adaptively controlled to ensure proper initialization. If desired, re-initialization can be limited to those areas detected to be outside of the predetermined parameters.
    Type: Application
    Filed: February 25, 2003
    Publication date: August 14, 2003
    Inventors: Kyohji Hattori, Kenichi Aihara, Katsuyuki Yamada, Fumiya Ohmi, Eiji Noda, Yujiro Kaneko, Yuki Nakamura, Hiroko Iwasaki
  • Patent number: 6580672
    Abstract: A method and apparatus for initializing optical recording media is provided that detects the intensity of a reflective light off of an optical recording media and analyzes the initializing condition based on the detected intensity during an initializing process. The light is radiated on a rotating phase-change optical recording medium. The light maybe moved in a radial direction of the optical recording medium. The detected intensity of the reflected light may be used to identify crystallized portions and amorphous portions of the optical media. The initialization process can be adaptively controlled to ensure proper initialization. If desired, re-initialization can be limited to those areas detected to be outside of the predetermined parameters.
    Type: Grant
    Filed: February 21, 2002
    Date of Patent: June 17, 2003
    Assignee: Ricoh Company, Ltd.
    Inventors: Kyohji Hattori, Kenichi Aihara, Katsuyuki Yamada, Fumiya Ohmi, Eiji Noda, Yujiro Kaneko, Yuki Nakamura, Hiroko Iwasaki
  • Publication number: 20020142236
    Abstract: An optical information memory medium, including, in the stated order a substrate, an optical information memory layer which is capable of memorizing information therein, and a reversible display recording layer which is capable of rewritably recording therein, in a visibly recognizable form, at least part of an information corresponding to the information memorized in the optical information memory layer, and a display recording method using the optical information memory medium are disclosed.
    Type: Application
    Filed: February 26, 2002
    Publication date: October 3, 2002
    Inventors: Hiroko Iwasaki, Kenichi Aihara, Kyohji Hattori, Akihiko Okamoto, Yoshihiko Hotta, Naoshi Mishima, Tetsuo Watanabe
  • Patent number: 6445669
    Abstract: A method of initializing a phase-change optical information recording medium is provided, using an optical system incorporating a semiconductor laser device. The laser device is characterized by a specified spatial power distribution. In a spatial distribution of the laser power focused on the recording medium, in the direction perpendicular to guide tracks the laser device preferably has less average smaller in both end regions of the spatial distribution, which have each 10% of the width at half maximum of the distribution, than the average in the center region of the full width at half maximum of the distribution.
    Type: Grant
    Filed: December 23, 1999
    Date of Patent: September 3, 2002
    Assignee: Ricoh Company, Ltd.
    Inventors: Kyohji Hattori, Fumiya Ohmi, Kenichi Aihara, Katsuyuki Yamada, Yuki Nakamura, Eiji Noda, Michihisa Takahashi, Yujiro Kaneko, Yukio Ide
  • Publication number: 20020093897
    Abstract: A method and apparatus for initializing optical recording media is provided that detects the intensity of a reflective light off of an optical recording media and analyzes the initializing condition based on the detected intensity during an initializing process. The light is radiated on a rotating phase-change optical recording medium. The light may be moved in a radial direction of the optical recording medium. The detected intensity of the reflected light may be used to identify crystallized portions and amorphous portions of the optical media. The initialization process can be adaptively controlled to ensure proper initialization. If desired, re-initalization can be limited to those areas detected to be outside of the predetermined parameters.
    Type: Application
    Filed: February 21, 2002
    Publication date: July 18, 2002
    Inventors: Kyohji Hattori, Kenichi Aihara, Katsuyuki Yamada, Fumiya Ohmi, Eiji Noda, Yujiro Kaneko, Yuki Nakamura, Hiroko Iwasaki
  • Patent number: 6373802
    Abstract: A method and apparatus for initializing optical recording media is provided that detects the intensity of a reflective light off of an optical recording media and analyzes the initializing condition based on the detected intensity during an initializing process. The light is radiated on a rotating phase-change optical recording medium. The light may be moved in a radial direction of the optical recording medium. The detected intensity of the reflected light may be used to identify crystallized portions and amorphous portions of the optical media. The initialization process can be adaptively controlled to ensure proper initialization. If desired, re-initialization can be limited to those areas detected to be outside of the predetermined parameters.
    Type: Grant
    Filed: November 25, 1998
    Date of Patent: April 16, 2002
    Assignee: Ricoh Company, Ltd.
    Inventors: Kyohji Hattori, Kenichi Aihara, Katsuyuki Yamada, Fumiya Ohmi, Eiji Noda, Yujiro Kaneko, Yuki Nakamura, Hiroko Iwasaki
  • Patent number: 6329035
    Abstract: An optical data storage medium includes a substrate, an optical data storage layer overlaid on the substrate and a reversible image recording layer overlaid on the optical data storage layer, in which information is recorded in the reversible image recording layer so as to be visible. The reversible image recording layer, which includes a matrix resin and a low-molecular-weight organic substance dispersed in the matrix resin, may preferably be thermosensitive and change its transparency or color tone in response to heat.
    Type: Grant
    Filed: March 19, 1999
    Date of Patent: December 11, 2001
    Assignee: Ricoh Company, Ltd.
    Inventors: Hiroko Iwasaki, Kenichi Aihara, Kyohji Hattori, Akihiko Okamoto, Yoshihiko Hotta, Naoshi Mishima, Tetsuo Watanabe
  • Patent number: 5974025
    Abstract: An optical recording medium capable of recording and erasing information, includes a first dielectric layer, a recording layer, a second dielectric layer, a light reflection and heat dissipation layer, and an overcoat layer which are successively overlaid on a substrate, the recording layer including a phase-change recording material which includes as constituent elements Ag, In, Sb, Te, and N and/or O with the respective atomic % thereof being .alpha., .beta., .gamma., .delta. and .epsilon. (the total atomic % of N and/or O), which are in the relationship of: 0<.alpha..ltoreq.6, 3.ltoreq..beta..ltoreq.15, 50.ltoreq..gamma..ltoreq.65, 20.ltoreq..delta..ltoreq.35, 0.ltoreq..epsilon..ltoreq.5, provided that .alpha.+.beta.+.gamma.+.delta.+.epsilon.=100, and (2) having a recrystallization upper-limit linear speed in a range of 2.5 to 5.0 m/s. A recording method and a reproduction method, using this optical recording medium, are proposed.
    Type: Grant
    Filed: August 13, 1998
    Date of Patent: October 26, 1999
    Assignee: Ricoh Company, Ltd.
    Inventors: Katsuyuki Yamada, Yuki Nakamura, Eiji Noda, Kyohji Hattori, Kenichi Aihara, Fumiya Ohmi, Yujiro Kaneko
  • Patent number: RE39901
    Abstract: A method of initializing a phase-change optical information recording medium is provided, using an optical system incorporating a semiconductor laser device. The laser device is characterized by a specified spatial power distribution. In a spatial distribution of the laser power focused on the recording medium, in the direction perpendicular to guide tracks the laser device preferably has less average smaller in both end regions of the spatial distribution, which have each 10% of the width at half maximum of the distribution, than the average in the center region of the full width at half maximum of the distribution.
    Type: Grant
    Filed: April 14, 2004
    Date of Patent: October 30, 2007
    Assignee: Ricoh Company, Ltd.
    Inventors: Kyohji Hattori, Fumiya Ohmi, Kenichi Aihara, Katsuyuki Yamada, Yuki Nakamura, Eiji Noda, Michihisa Takahashi, Yujiro Kaneko, Yukio Ide