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:
Sep. 15, 1987
Filed:
Aug. 29, 1985
Applicant:
Inventors:
Norihide Kunikawa, Yao, JP;
Tetsuya Kondo, Shizuoka, JP;
Yasumasa Ohba, Numazu, JP;
Michihiro Matsuoka, Susono, JP;
Assignee:
Sharp Kabushiki, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03B / ;
U.S. Cl.
CPC ...
355 77 ; 355-8 ; 355 51 ;
Abstract
A copying machine having an optical system movable by a motor in a feed direction with a predetermined feed speed and in a return direction for returning the optical system to a predetermined home position. The optical system is returned with a first speed higher than the feed speed. A countercurrent braking of the motor is performed to decelerate the motor near its home position and the speed of the motor after this braking process is decelerated to such a speed that the optical system can be stopped correctly at the home position.