Patents by Inventor Yuuya Ogawa

Yuuya Ogawa 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).

  • Optical writing device, image forming device, optical writing control method, and computer program product
    Patent number: 9703229
    Abstract: An optical writing device writes an image on a photoconductor with light emitted from a light-emitting element array including a plurality of light-emitting elements lined in one direction. The optical writing device includes: a thinning unit that thins pixels in input binary image data depending on a pattern of the image data; a thinning rate setting unit that sets a thinning rate by the thinning unit for each predetermined range of the image data; and a light-emitting time changing unit that changes a light-emitting time of the light-emitting element array for each predetermined range of the binary image data thinned by the thinning unit depending on the thinning rate set by the thinning rate setting unit and a set toner saving rate.
    Type: Grant
    Filed: March 10, 2015
    Date of Patent: July 11, 2017
    Assignee: RICOH COMPANY, LTD.
    Inventors: Satoshi Hirata, Yuuya Ogawa, Atsushi Yamazaki, Hiroyuki Yanagi
  • OPTICAL WRITING DEVICE, IMAGE FORMING DEVICE, OPTICAL WRITING CONTROL METHOD, AND COMPUTER PROGRAM PRODUCT
    Publication number: 20150268580
    Abstract: An optical writing device writes an image on a photoconductor with light emitted from a light-emitting element array including a plurality of light-emitting elements lined in one direction. The optical writing device includes: a thinning unit that thins pixels in input binary image data depending on a pattern of the image data; a thinning rate setting unit that sets a thinning rate by the thinning unit for each predetermined range of the image data; and a light-emitting time changing unit that changes a light-emitting time of the light-emitting element array for each predetermined range of the binary image data thinned by the thinning unit depending on the thinning rate set by the thinning rate setting unit and a set toner saving rate.
    Type: Application
    Filed: March 10, 2015
    Publication date: September 24, 2015
    Inventors: Satoshi HIRATA, Yuuya Ogawa, Atsushi Yamazaki, Hiroyuki Yanagi