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:
Apr. 06, 1982
Filed:
Dec. 31, 1980
Tadayuki Kitajima, Yokohama, JP;
Yoshikuni Tohyama, Yokohama, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A copy magnification modifying apparatus for changing the copy magnification by displacing optical members involved in the image formation to and maintaining the same at a position capable of forming an image of a selected magnification of an original onto a photosensitive member, including a rotary drive source, an optical member displacing mechanism for transmitting the drive force of the rotary drive source through one-directional rotary clutch and resilient member to said optical members thereby guiding the same along a determined path, an optical member stopper for stopping said optical members at a position corresponding to the selected image magnification, and a drive source control system adapted for continuing the function of the rotary drive source after the stopping of the optical members to cause a deformation in a resilient member thereby generating a resilient force biasing the one-directional rotary clutch in a direction opposite to the rotating direction thereof.