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:
Jul. 07, 2015
Filed:
Jun. 11, 2013
Applicant:
Canon Kabushiki Kaisha, Tokyo, JP;
Inventors:
Takayuki Fukutani, Susono, JP;
Yuuji Takayama, Suntou-gun, JP;
Tomoyuki Saiki, Suntou-gun, JP;
Tae Matsumoto, Yokohama, JP;
Yuichi Ogawa, Susono, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03G 15/00 (2006.01); H02P 6/00 (2006.01); G03G 15/01 (2006.01); G03G 15/16 (2006.01);
U.S. Cl.
CPC ...
G03G 15/5008 (2013.01); G03G 15/0131 (2013.01); G03G 2215/00059 (2013.01); G03G 2215/0129 (2013.01); G03G 2215/0164 (2013.01); G03G 15/1615 (2013.01); G03G 15/5058 (2013.01); G03G 15/0194 (2013.01);
Abstract
An apparatus includes an image formation unit including a photosensitive drum and a motor for driving the image formation unit. The apparatus acquires a frequency generator signal, which is phase information output from the motor as the motor rotates. In addition, the apparatus corrects unevenness of the density that may occur due to the rotation of the motor according to the acquired phase information.