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:
Jan. 23, 2018
Filed:
Aug. 28, 2014
Driving device of rotating polygonal mirror and image forming apparatus including the driving device
Applicant:
Canon Kabushiki Kaisha, Tokyo, JP;
Inventor:
Yuta Nito, Tokyo, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B41J 2/47 (2006.01); G02B 26/12 (2006.01); G03G 15/043 (2006.01);
U.S. Cl.
CPC ...
B41J 2/471 (2013.01); G02B 26/122 (2013.01); G03G 15/043 (2013.01);
Abstract
A driving device of a rotating polygonal mirror which stops supply of a driving current or reduces output of the driving current in a state where the driving current is supplied to a driving motor, and detects a period of an FG signal based on a detected waveform output from a detection element in the state where the driving current is stopped.