Patents by Inventor Eiichiro Nakao

Eiichiro Nakao 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).

  • Optical pickup and optical disk apparatus
    Patent number: 7573800
    Abstract: An optical pickup and an optical disk apparatus of the invention includes a light source 1 mounted with a light-emitting element constituted of a monoblock on a surface of a plate 6 and emitting plural light beams, a light-receiving element 2, optical members 4, 5 and a coupling base 3 for coupling the light source 1, the light-receiving element 2 and the optical members 4, 5, wherein a light from the light source 1 is directed through the optical members 4, 5 toward an optical disk, and a returning light from the optical disk is guided through the optical members 4, 5 to the light-receiving element 2, characterized in that the plate 6 provided in the light source 1 and the coupling base 3 are adjoined by a solder.
    Type: Grant
    Filed: January 28, 2005
    Date of Patent: August 11, 2009
    Assignee: Panasonic Corporation
    Inventors: Masaharu Fukakusa, Mitsuhiro Matsumoto, Jiro Mimasa, Hiroshi Tanigawa, Hiroshi Kamei, Toshiharu Kimura, Mitsugu Adachi, Hiroshi Iwabuchi, Eiichiro Nakao
  • Optical pickup and optical disk apparatus
    Publication number: 20050169151
    Abstract: An optical pickup and an optical disk apparatus of the invention includes a light source 1 mounted with a light-emitting element constituted of a monoblock on a surface of a plate 6 and emitting plural light beams, a light-receiving element 2, optical members 4, 5 and a coupling base 3 for coupling the light source 1, the light-receiving element 2 and the optical members 4, 5, wherein a light from the light source 1 is directed through the optical members 4, 5 toward an optical disk, and a returning light from the optical disk is guided through the optical members 4, 5 to the light-receiving element 2, characterized in that the plate 6 provided in the light source 1 and the coupling base 3 are adjoined by a solder.
    Type: Application
    Filed: January 28, 2005
    Publication date: August 4, 2005
    Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
    Inventors: Masaharu Fukakusa, Mitsuhiro Matsumoto, Jiro Mimasa, Hiroshi Tanigawa, Hiroshi Kamei, Toshiharu Kimura, Mitsugu Adachi, Hiroshi Iwabuchi, Eiichiro Nakao
  • Color image-forming apparatus adapted to stabilize contact between endless belt-like photosensitive medium and developing roller
    Patent number: 5671467
    Abstract: A color image-forming apparatus includes an endless belt-like photosensitive member stretched between and wound around a drive roller and a driven roller, and a plurality of developing rollers making contact with an outer surface of the photosensitive member. At least one flexure correction shaft is held in contact with an inner surface of the photosensitive member on the side remote from the developing rollers. With this construction, the condition of contact between each developing roller and the photosensitive member is made stable and uniform, and the developing conditions for all the colors become uniform so that a high-quality image can be obtained.
    Type: Grant
    Filed: December 13, 1995
    Date of Patent: September 23, 1997
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Yoshikazu Katsumata, Yoshihiro Mizoguchi, Yoshiaki Ijima, Makoto Kamioka, Yoshinori Ejima, Nobuo Kishiyama, Yutaka Noda, Eiichiro Nakao