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:
Jul. 12, 2022
Filed:
Sep. 09, 2020
Canon Kabushiki Kaisha, Tokyo, JP;
Yoshihiko Tanaka, Mishima, JP;
Hisanori Kobayashi, Kawasaki, JP;
Naoki Matsushita, Suntou-gun, JP;
Takatoshi Tanaka, Atami, JP;
Mitsuhiro Ohta, Yokohama, JP;
Hiroki Katayama, Suntou-gun, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
In an optical scanning device, an outer wall closest to a circumscribed circle of a rotating polygon mirror has a space in a position facing to a position of a reflection surface of the rotating polygon mirror in an axial direction of a rotating shaft. A part of a cover is provided in a position farther from the circumscribed circle than the outer wall so as to close the space, when the optical scanning device is viewed in a direction perpendicular to the axial direction of the rotating shaft.