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:
Jul. 14, 2016
Canon Kabushiki Kaisha, Tokyo, JP;
Ryuichi Araki, Tokyo, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
An image forming apparatus includes: a photosensitive member rotating in a first direction; a light scanning device, when the photosensitive member rotates at a slower speed, irradiate the photosensitive member with light beam through use of part of scanning lines corresponding to the slower speed; a storage unit in which information on positional deviation of the scanning lines in the first direction is stored; and a correction portion calculating a correction value for correcting positional deviation amounts of a predetermined scanning line and a scanning line group, which is included within a predetermined range in an advance direction and a return direction in the first direction from the predetermined scanning line, with extracting information corresponding to the part of the scanning lines from the stored information when the photosensitive member rotates at the slower speed, and correcting positional deviation of the predetermined scanning line based on the calculated correction value.