Patents by Inventor Toshihiko Furuichi

Toshihiko Furuichi 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).

  • Light-emitting element head, image forming apparatus and light-emission control method
    Patent number: 8134585
    Abstract: A light-emitting element head includes: plural light-emitting element array chips that are divided into plural groups and that each are provided with light-emitting elements arranged in an array; a signal generation unit that generates a light-emission control signal for controlling blinking of the light-emitting elements, and an identification signal for identifying which of the light-emitting element array chips in each of the groups the light-emission control signal is for; signal lines through which the light-emission control signal and the identification signal are transmitted; and identification signal discrimination units that are connected to the signal lines and that are provided in the respective light-emitting element array chips, each of the identification signal discrimination units discriminating the identification signal, and transmitting the light-emission control signal to the light-emitting elements.
    Type: Grant
    Filed: August 31, 2009
    Date of Patent: March 13, 2012
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Seiji Ohno, Toshihiko Furuichi
  • LIGHT-EMITTING ELEMENT HEAD, IMAGE FORMING APPARATUS AND LIGHT-EMISSION CONTROL METHOD
    Publication number: 20100157010
    Abstract: A light-emitting element head includes: plural light-emitting element array chips that are divided into plural groups and that each are provided with light-emitting elements arranged in an array; a signal generation unit that generates a light-emission control signal for controlling blinking of the light-emitting elements, and an identification signal for identifying which of the light-emitting element array chips in each of the groups the light-emission control signal is for; signal lines through which the light-emission control signal and the identification signal are transmitted; and identification signal discrimination units that are connected to the signal lines and that are provided in the respective light-emitting element array chips, each of the identification signal discrimination units discriminating the identification signal, and transmitting the light-emission control signal to the light-emitting elements.
    Type: Application
    Filed: August 31, 2009
    Publication date: June 24, 2010
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Seiji Ohno, Toshihiko Furuichi