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:
Jun. 28, 1994
Filed:
Apr. 03, 1991
Applicant:
Inventors:
Ken Matsubara, Osaka, JP;
Kouichi Shingaki, Osaka, JP;
Tsukasa Yagi, Osaka, JP;
Hirohisa Kitano, Osaka, JP;
Itaru Saito, Itami, JP;
Kenichi Wada, Takatsuki, JP;
Atsushi Fujita, Otsu, JP;
Assignee:
Minolta Camera Kabushiki Kaisha, Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02F / ; G02F / ; G09G / ;
U.S. Cl.
CPC ...
359249 ; 359245 ; 359252 ; 359276 ; 359322 ; 345214 ;
Abstract
An optical shutter device for use, e.g., in an optical printer includes a plurality of electrooptic chips each having a plurality of very small segments for optical modulation. The optical shutter device has a voltage adjusting circuit which individually supplies the driving voltage to the chips depending on the light transmitting characteristics intrinsic to the chips. Thus, even when the chips have different light transmitting characteristics, the image produced by the chips will have a uniform intensity.