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. 24, 1984
Filed:
May. 20, 1983
Applicant:
Inventor:
Yu Yamada, Kokubunji, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G / ;
U.S. Cl.
CPC ...
355-8 ; 355 11 ; 355 47 ; 355 49 ;
Abstract
This specification discloses an optical scanning device in a copying machine or the like of the slit exposure scanning type in which two scanning mirrors are disposed in an optical path between an image forming element and a photosensitive surface which is the image plane and during the slit scanning, an original surface which is the object surface and the image forming element are fixed, characterized in that the two scanning mirrors are moved along the quadratic curve-like loci of the optical reflection point or straight line-like loci approximate thereto, whereby the scanning mirrors are made compact.