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:
Jul. 16, 1996
Filed:
Jun. 05, 1995
Applicant:
Inventors:
Shuichi Morikawa, Kanazawa, JP;
Masahiko Futatsuka, Kahoku-gun, JP;
Satoshi Ishida, Kanazawa, JP;
Yasunori Miyauchi, Kanazawa, JP;
Minoru Masuda, Kahoku-gun, JP;
Makoto Takagawa, Kanazawa, JP;
Assignees:
PFU Limited, Ishikawa, JP;
Fujitsu Limited, Kanagawa, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04N / ; H04N / ; H04N / ;
U.S. Cl.
CPC ...
358406 ; 358461 ; 358475 ; 358494 ; 358496 ; 358497 ; 358498 ;
Abstract
An image reading apparatus is provided with white reference sheets. The image reading image apparatus is movable between a first reading position at which an optical reading unit reads image information on a document supplied by an automatic paper feeding mechanism and a second reading position. The image reading apparatus regulates an absolute white level with respect to a light source.