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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.:

US 4636063 B1

PDFFull Text
Date of Patent:
Jan. 13, 1987

Filed:

May. 15, 1985

Automatic exposure adjusting device

Applicant:
Inventors:

Yasuhiro Takai, Sakurai, JP;

Kenichi Morimoto, Nara, JP;

Shigekazu Yoshida, Nara, JP;

Takao Tagawa, Kashihara, JP;

Assignee:

Sharp Kabushiki Kaisha, Osaka, JP;

Attorney:

Birch, Stewart, Kolasch & Birch

Primary Examiner:

Richard A Wintercorn

Int. Cl.
CPC ...
G03B / ; G03B / ;
U.S. Cl.
CPC ...
355 68 ; 355 / ;
Abstract

An automatic exposure adjusting device for use in a variable copying magnification type copying apparatus, which controls quantity of light of a light source by detecting photographic density of an original document by the use of a photo detector and includes a shielding plate formed with a slit aligned with an optical path for subjecting a photosensitive member to exposure. The photo detector is provided below and adjacent to the light source, while the shielding plate is provided below and adjacent to a copy face of the original document.

Find Patent Forward Citations

Takai, Yasuhiro. (1987). Automatic exposure adjusting device (U.S. Patent No. 4636063). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4636063

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

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