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:
Dec. 08, 1992
Filed:
Sep. 30, 1991
Applicant:
Inventors:
Mamoru Nobue, Kanagawa, JP;
Kazuhiro Sakai, Kanagawa, JP;
Assignee:
Fuji Xerox Co., Ltd., Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01R / ;
U.S. Cl.
CPC ...
324678 ; 358406 ; 358483 ; 361281 ;
Abstract
A method of detecting the charges which photo-electric conversion elements produce in correspondence to the density data of minute regions in an original image. In the method, a variable capacitor is charged with the capacitance set to a large value, and the voltage developed across the variable capacitor is detected with the capacitance set to a small value, whereby the voltage to be detected is increased as much, with an improvement in the signal detection accuracy.