Patents by Inventor Aldyasu Amita

Aldyasu Amita 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).

  • Image fixing apparatus stably controlling a fixing temperature, and image forming apparatus using the same
    Patent number: 8422901
    Abstract: An image forming apparatus includes an image forming mechanism and an image fixing unit. The image forming mechanism forms a toner image on a recording sheet. The image fixing unit fixes the toner image onto the recording sheet. The image fixing unit includes a magnetic flux generator, a heat member, a magnetic flux adjuster, and a controlling member. The magnetic flux generator generates a magnetic flux. The heat member is heated inductively by the magnetic flux generated by the magnetic flux generator. The magnetic flux adjuster reduces the magnetic flux active on the heat member to form a heat reduction area in an outer circumferential surface of the heat member in a width direction thereof. The controlling member moves the magnetic flux adjuster to change the heat reduction area.
    Type: Grant
    Filed: February 14, 2011
    Date of Patent: April 16, 2013
    Assignee: Ricoh Co., Ltd.
    Inventors: Kenji Ishii, Aldyasu Amita, Ken Omura, Kenichi Hasegawa, Hiroshi Yokoyama, Satoshi Ueno
  • IMAGE FIXING APPARATUS STABLY CONTROLLING A FIXING TEMPERATURE, AND IMAGE FORMING APPARATUS USING THE SAME
    Publication number: 20110176822
    Abstract: An image forming apparatus includes an image forming mechanism and an image fixing unit. The image forming mechanism forms a toner image on a recording sheet. The image fixing unit fixes the toner image onto the recording sheet. The image fixing unit includes a magnetic flux generator, a heat member, a magnetic flux adjuster, and a controlling member. The magnetic flux generator generates a magnetic flux. The heat member is heated inductively by the magnetic flux generated by the magnetic flux generator. The magnetic flux adjuster reduces the magnetic flux active on the heat member to form a heat reduction area in an outer circumferential surface of the heat member in a width direction thereof. The controlling member moves the magnetic flux adjuster to change the heat reduction area.
    Type: Application
    Filed: February 14, 2011
    Publication date: July 21, 2011
    Inventors: Kenji ISHII, Aldyasu Amita, Ken Omura, Kenichi Hasegawa, Hiroshi Yokoyama, Satoshi Ueno