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:
Oct. 17, 2017
Filed:
Jan. 20, 2017
Applicant:
Canon Kabushiki Kaisha, Tokyo, JP;
Inventor:
Kenji Nemoto, Kawasaki, JP;
Assignee:
CANON KABUSHIKI KAISHA, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G 15/04 (2006.01); G03G 15/043 (2006.01); G02B 26/12 (2006.01);
U.S. Cl.
CPC ...
G03G 15/043 (2013.01); G02B 26/127 (2013.01);
Abstract
At image formation time, when the light amount setting value used in the image formation is equal to or larger than the light amount value Xm affected by the stray light, a corrected signal width Tw corresponding to the light amount setting value used in the image formation is calculated from the increase ratio αn of the signal width tn of a detection signal acquired in a region having a light amount value smaller than the light amount value Xm affected by the stray light; and a synchronization signal is generated on the basis of a center position of the corrected signal width Tw.