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.

Date of Patent:
Apr. 17, 1990

Filed:

Jul. 25, 1988
Applicant:
Inventors:

Shuji Yamada, Hyogo, JP;

Hironori Ando, Osaka, JP;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B / ;
U.S. Cl.
CPC ...
350255 ; 350320 ; 355 56 ;
Abstract

In a method for controlling a lens of an image forming apparatus, the lens is moved at a high speed from a present position till passing a home position, and thereafter the lens is moved at a low speed in the reverse direction to stop at the home position. Waste of time can be decreased and rapid control of the lens can be achieved by high speed movement of the lens to a position near the home position, and the lens can be precisely stopped at the home position by low speed movement of the lens before stopping.


Find Patent Forward Citations

Yamada, Shuji. (1990). Method and apparatus for controlling lens of image forming apparatus (U.S. Patent No. 4917460). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4917460

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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