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:
Aug. 18, 1981
Filed:
Apr. 09, 1979
Hiroshi Ikeda, Aichi, JP;
Seiichi Sakurai, Toyokawa, JP;
Minolta Camera Kabushiki Kaisha, Osaka, JP;
Abstract
An electrophotographic copying machine comprises a transparent support for the support of an original to be copied, a photo-receptor, an optical projecting system for projecting an image of the original onto the photo-receptor and an exposure adjustment for controlling a pattern of distribution on the photo-receptor of rays of light carrying the image of the original. The optical projecting system includes a projecting lens assembly supported for movement between at least first and second positions wherein the image of the original can be reproduced on a copying paper in different magnifications. The exposure adjustment is positioned between the transparent support and the optical projecting system and is comprised of a fixedly supported light shielding member.