Patents by Inventor Naohisa Kumagai

Naohisa Kumagai 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).

  • Apparatus for suppressing vibration of optical part
    Patent number: 6914366
    Abstract: In the exposing apparatus of an image forming apparatus or the like, an apparatus for suppressing the vibration of an optical part has a detector for detecting the vibrating state of the optical part, and a controller for controlling a vibrator so as to give the optical part such an appropriate amount of vibration as will negate the vibration of the optical part. Thereby, it becomes unnecessary to excessively increase the rigidity of the optical part and thus, a decrease in weight can be achieved.
    Type: Grant
    Filed: August 30, 2002
    Date of Patent: July 5, 2005
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takashi Kaga, Naohisa Kumagai
  • Multilayered structure resin molded product and method of manufacturing multilayered structure resin molded product
    Patent number: 6838131
    Abstract: It is an object of this invention to provide a multilayered structure molded product formable by reusing a resin molded product. To achieve this object, a multilayered structure resin molded product including a core layer and a skin layer is molded using a pulverized resin material, which is formed by pulverizing a molded product molded from a thermoplastic resin material, as a resin material for forming the core layer, and a virgin material as a resin material for forming the skin layer.
    Type: Grant
    Filed: July 3, 2001
    Date of Patent: January 4, 2005
    Assignee: Canon Kabushiki Kaisha
    Inventors: Daishi Saiki, Hirohide Matsuhisa, Naohisa Kumagai, Izumi Uraki
  • Apparatus for suppressing vibration of optical part
    Publication number: 20030042822
    Abstract: In the exposing apparatus of an image forming apparatus or the like, an apparatus for suppressing the vibration of an optical part has a detector for detecting the vibrating state of the optical part, and a controller for controlling a vibrator so as to give the optical part such an appropriate amount of vibration as will negate the vibration of the optical part. Thereby, it becomes unnecessary to excessively increase the rigidity of the optical part and thus, a decrease in weight can be achieved.
    Type: Application
    Filed: August 30, 2002
    Publication date: March 6, 2003
    Applicant: Canon Kabushiki Kaisha
    Inventors: Takashi Kaga, Naohisa Kumagai
  • Multilayered structure resin molded product and method of manufacturing multilayered structure resin molded product
    Publication number: 20020015841
    Abstract: It is an object of this invention to provide a multilayered structure molded product formable by reusing a resin molded product. To achieve this object, a multilayered structure resin molded product including a core layer and a skin layer is molded using a pulverized resin material, which is formed by pulverizing a molded product molded from a thermoplastic resin material, as a resin material for forming the core layer, and a virgin material as a resin material for forming the skin layer.
    Type: Application
    Filed: July 3, 2001
    Publication date: February 7, 2002
    Inventors: Daishi Saiki, Hirohide Matsuhisa, Naohisa Kumagai, Izumi Uraki