Patents by Inventor Tomoyuki Yamashita

Tomoyuki Yamashita 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).

  • Publication number: 20140270835
    Abstract: A fixing control device includes an image detection unit that determines presence of an image in each of areas obtained by division of an image formation region in which the image is formed, a heater selection unit that selects from heaters of a fixing device heaters at positions corresponding to areas in which the presence of the image is determined, a heating amount computation unit that computes a heating amount of a heating area heated by each of the selected heaters in a fixing region corresponding to the image formation region, a change amount computation unit that computes an amount of change of the heating amount between adjoining ones of the heating areas, and a heating amount correction unit that corrects one of the heating amounts of the adjoining heating areas so that the amount of change after the correction is less than a predetermined threshold.
    Type: Application
    Filed: March 14, 2014
    Publication date: September 18, 2014
    Applicant: RICOH COMPANY, LTD.
    Inventors: Hiroaki UMEZAWA, Shiho SHIMOSAKA, Katsunori KUME, Koh TOKUMARU, Osamu KIZAKI, Noboru SUGIURA, Norikazu OKADA, Atsuki IWATA, Keita MAEJIMA, Tomoyuki YAMASHITA
  • Publication number: 20140098395
    Abstract: An activation control apparatus includes a voltage fluctuation obtainer to obtain voltage fluctuation amplitude of an external power source at a given voltage, the voltage fluctuation caused when activating an apparatus using the external power source; a voltage fluctuation detector to detect the voltage fluctuation of the external power source at the given voltage; an activation controller to determine whether the voltage fluctuation amplitude obtained by the voltage fluctuation obtainer at the given voltage of the external power source, detected by the voltage fluctuation detector, is within a preset allowable voltage fluctuation range, and to control activation of the apparatus using the external power source based on a result of the voltage fluctuation determination made by the activation controller.
    Type: Application
    Filed: September 27, 2013
    Publication date: April 10, 2014
    Inventors: Kiriko Chosokabe, Mikio Nakajima, Tomoyuki Yamashita
  • Publication number: 20130082165
    Abstract: A solid-state imaging device includes: a first lens layer; and a second lens layer, wherein the second lens layer is formed at least at a periphery of each first microlens formed based on the first lens layer, and the second lens layer present at a central portion of each of the first microlenses is thinner than the second lens layer present at the periphery of the first microlens or no second lens layer is present at the central portion of each of the first microlenses.
    Type: Application
    Filed: September 13, 2012
    Publication date: April 4, 2013
    Inventors: Yoichi Ootsuka, Tomoyuki Yamashita, Kiyotaka Tabuchi, Yoshinori Toumiya, Akiko Ogino