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:
Feb. 13, 2018
Filed:
Sep. 02, 2016
Canon Kabushiki Kaisha, Tokyo, JP;
Yuichi Seki, Saitama, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
A light scanning apparatus, including: a light source configured to emit a light beam; a rotary polygon mirror configured to deflect the light beam emitted from the light source so that the light beam scans on a surface of a photosensitive member in a main scanning direction; a motor configured to rotate the rotary polygon mirror; and a rotational position detection unit configured to detect a magnetic flux change caused by rotation of the motor to generate a rotational position detection signal, wherein an emitting start timing of the light beam from the light source is determined based on the rotational position detection signal in order to maintain a writing start position of the light beam with respect to the photosensitive member in the main scanning direction.