The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 06, 2005
Filed:
Sep. 20, 2000
Applicants:
Toshiyuki Sekiya, Mishima, JP;
Mitsuo Shiraishi, Shizuoka-ken, JP;
Inventors:
Toshiyuki Sekiya, Mishima, JP;
Mitsuo Shiraishi, Shizuoka-ken, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B41J002/435 ;
U.S. Cl.
CPC ...
Abstract
Light quantity unevenness is corrected at high resolution to improve image quality, without increasing a speed of system clock. Pixel correction data which is to correct a light emission characteristic of each light emission element by the pixel unit is prepared for plural lines, and the pixel correction data for the plural lines are periodically changed to modify a light emission driving time of each light emission element.