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:
Nov. 13, 2018
Filed:
Jul. 11, 2017
Applicant:
Canon Kabushiki Kaisha, Tokyo, JP;
Inventor:
Yuichi Seki, Saitama, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G 15/043 (2006.01); H04N 1/00 (2006.01); H04N 1/393 (2006.01); H04N 1/113 (2006.01); H04N 1/40 (2006.01);
U.S. Cl.
CPC ...
G03G 15/043 (2013.01); H04N 1/00037 (2013.01); H04N 1/00058 (2013.01); H04N 1/00082 (2013.01); H04N 1/113 (2013.01); H04N 1/393 (2013.01); H04N 1/40056 (2013.01);
Abstract
Surface identification processing is performed using a period of a BD signal when an amount of light incident on a BD sensor reaches an amount equal to or more than a threshold value, and the surface identification processing is not performed using the period of the BD signal in a state where the amount of light incident on the BD sensor is less than the threshold value. Thus, malfunction of the image forming apparatus due to failure of the surface identification processing is suppressed.