Patents by Inventor Shinjiro Ito

Shinjiro Ito 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 forming method, optical scanning apparatus and image forming apparatus
    Patent number: 8350884
    Abstract: An image forming method including: inputting a pulse width modulated signal into a laser beam output section and thereby outputting a laser beam, wherein a pulse width of the pulse width modulated signal is changed based on image data containing density information; scanning the laser beam onto a surface of a photoreceptor through an optical scanning apparatus and thereby outputting an image; detecting a diameter of the laser beam in a sub-scanning direction formed on the surface of the photoreceptor, the diameter of the laser beam inherent to each optical scanning apparatus and changing along an image height in a main scanning direction; and correcting the pulse width in response to the diameter in the sub-scanning direction so that the image output density is uniform with respect to one and the same input density in the image data.
    Type: Grant
    Filed: October 20, 2009
    Date of Patent: January 8, 2013
    Assignee: Konica Minolta Business Technologies, Inc.
    Inventors: Shinjiro Ito, Kazunori Ishige, Toru Makino
  • IMAGE FORMING METHOD, OPTICAL SCANNING APPARATUS AND IMAGE FORMING APPARATUS
    Publication number: 20100104304
    Abstract: An image forming method including: inputting a pulse width modulated signal into a laser beam output section and thereby outputting a laser beam, wherein a pulse width of the pulse width modulated signal is changed based on image data containing density information; scanning the laser beam onto a surface of a photoreceptor through an optical scanning apparatus and thereby outputting an image; detecting a diameter of the laser beam in a sub-scanning direction formed on the surface of the photoreceptor, the diameter of the laser beam inherent to each optical scanning apparatus and changing along an image height in a main scanning direction; and correcting the pulse width in response to the diameter in the sub-scanning direction so that the image output density is uniform with respect to one and the same input density in the image data.
    Type: Application
    Filed: October 20, 2009
    Publication date: April 29, 2010
    Applicant: KONICA MINOLTA BUSINESS TECHNOLOGIES, INC.
    Inventors: Shinjiro ITO, Kazunori ISHIGE, Toru MAKINO