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:
Oct. 24, 2006
Filed:
Apr. 15, 2002
Ryuji Okutomi, Tokyo, JP;
Hiroyuki Futami, Tokyo, JP;
Jun Nakagawa, Tokyo, JP;
Tadayuki Ueda, Tokyo, JP;
Eiji Nishikawa, Tokyo, JP;
Ryuji Okutomi, Tokyo, JP;
Hiroyuki Futami, Tokyo, JP;
Jun Nakagawa, Tokyo, JP;
Tadayuki Ueda, Tokyo, JP;
Eiji Nishikawa, Tokyo, JP;
Konica Corporation, Tokyo, JP;
Abstract
In a document reading apparatus having a scanning exposure reading system by which a document placed on a platen is scanning exposed by an optical system and a document image is read out, or a document reading system by which a moving document is read out by an optical system, at the first collection position and the second collection position which are different in the sub-scanning direction of the scanning expose on a reference density plate, the first shading correction data and the second shading correction data are respectively read in the main scanning direction, and the shading position is corrected on the basis of the read first and second shading correction data.