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:
Mar. 03, 1987
Filed:
Sep. 04, 1985
Applicant:
Inventors:
Norihide Kunikawa, Yao, JP;
Tetsuya Kondo, Shizuoka, JP;
Yasumasa Ohba, Numazu, JP;
Michihiro Matsuoka, Susuno, JP;
Assignee:
Sharp Kabushiki Kaisha, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03B / ; G03B / ;
U.S. Cl.
CPC ...
355 56 ; 355 57 ;
Abstract
A method of controlling the movement of a lens in a copying apparatus wherein the amount of lens movement is detected and the movement of the lens is corrected if necessary when the lens passes the home position. Even an error in the number of pulses counted before the lens passes the home position can be corrected because of the presence of the home position.