Patents by Inventor Takakuni Minewaki

Takakuni Minewaki 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).

  • Fixing device having a heater and reflector arrangement and image forming apparatus having same
    Patent number: 9551963
    Abstract: A fixing device includes a fixing rotator rotatable in a given direction of rotation and a pressure rotator pressed against the fixing rotator to form a fixing nip therebetween, through which a recording medium is conveyed. A first heater is disposed opposite the fixing rotator with a first interval therebetween to heat the fixing rotator. A reflector reflects light emitted by the first heater to the fixing rotator. The reflector is disposed opposite the first heater with a second interval therebetween that is greater than the first interval.
    Type: Grant
    Filed: May 28, 2015
    Date of Patent: January 24, 2017
    Assignee: RICOH COMPANY, LTD.
    Inventors: Takeshi Tada, Ippei Fujimoto, Takakuni Minewaki, Susumu Matsusaka, Fumihito Masubuchi
  • FIXING DEVICE AND IMAGE FORMING APPARATUS
    Publication number: 20150355587
    Abstract: A fixing device includes a fixing rotator rotatable in a given direction of rotation and a pressure rotator pressed against the fixing rotator to form a fixing nip therebetween, through which a recording medium is conveyed. A first heater is disposed opposite the fixing rotator with a first interval therebetween to heat the fixing rotator. A reflector reflects light emitted by the first heater to the fixing rotator. The reflector is disposed opposite the first heater with a second interval therebetween that is greater than the first interval.
    Type: Application
    Filed: May 28, 2015
    Publication date: December 10, 2015
    Applicant: RICOH COMPANY, LTD.
    Inventors: Takeshi TADA, Ippei FUJIMOTO, Takakuni MINEWAKI, Susumu MATSUSAKA, Fumihito MASUBUCHI
  • Antenna and information communication apparatus using the antenna
    Patent number: 7180458
    Abstract: An antenna including a grounded conductor and a radiating element having a diameter that increases from the top to the bottom in which the top of the radiating element is opposed to the grounded conductor is disclosed. The radiating element of the antenna includes three regions positioned from the top to the bottom, each region having an angle between a side of the radiating element in the region and a center axis of the radiating element, wherein the angles of the three regions satisfy relationship: ?1>?2 and ?2<?3 when the angles are indicated by ?1, ?2 and ?3 respectively from the top to the bottom.
    Type: Grant
    Filed: July 11, 2005
    Date of Patent: February 20, 2007
    Assignee: Ricoh Company, Ltd.
    Inventors: Fumikazu Hoshi, Takakuni Minewaki
  • Antenna and information communication apparatus using the antenna
    Publication number: 20060012528
    Abstract: An antenna including a grounded conductor and a radiating element having a diameter that increases from the top to the bottom in which the top of the radiating element is opposed to the grounded conductor is disclosed. The radiating element of the antenna includes three regions positioned from the top to the bottom, each region having an angle between a side of the radiating element in the region and a center axis of the radiating element, wherein the angles of the three regions satisfy relationship: ?1>?2 and ?2<?3 when the angles are indicated by ?1, ?2 and ?3 respectively from the top to the bottom.
    Type: Application
    Filed: July 11, 2005
    Publication date: January 19, 2006
    Inventors: Fumikazu Hoshi, Takakuni Minewaki