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:
Jun. 02, 2009
Filed:
Feb. 10, 2006
Applicants:
Tsuyoshi Moriyama, Ibaraki-ken, JP;
Katsumi Takahashi, Ibaraki-ken, JP;
Atsushi Chaki, Chiba-ken, JP;
Takahiko Yamaoka, Chiba-ken, JP;
Inventors:
Tsuyoshi Moriyama, Ibaraki-ken, JP;
Katsumi Takahashi, Ibaraki-ken, JP;
Atsushi Chaki, Chiba-ken, JP;
Takahiko Yamaoka, Chiba-ken, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 3/00 (2006.01); B41J 2/435 (2006.01); B41J 2/44 (2006.01);
U.S. Cl.
CPC ...
Abstract
Whether an image to be formed has a prescribed M×N pixel pattern is determined by a comparator. If it is determined that the image has the prescribed M×N pixel pattern, then a light-quantity correction signal that is for reducing the current that flows through a semiconductor laser is output to a laser driving circuit when the laser emits a laser beam of a pixel of interest contained in the M×N pixel pattern.