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. 24, 2012
Filed:
May. 20, 2009
Mitsuharu Yoshimoto, Osaka, JP;
Yasuhiro Suto, Osaka, JP;
Tomohiko Okada, Osaka, JP;
Noritomo Nakashima, Osaka, JP;
Kenji Tanaka, Osaka, JP;
Shohichi Fukutome, Osaka, JP;
Mitsuharu Yoshimoto, Osaka, JP;
Yasuhiro Suto, Osaka, JP;
Tomohiko Okada, Osaka, JP;
Noritomo Nakashima, Osaka, JP;
Kenji Tanaka, Osaka, JP;
Shohichi Fukutome, Osaka, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
The document read apparatus according to the present invention has a light source unit that includes a linear first light and second light sources, both light sources aligned parallel to the sub scanning direction (moving direction). When the light source unit is scanning a book document in a second region shifted toward a side of the first light source from a center position for emitting light to the center of the document, a light quantity of the second light source becomes larger than a light quantity of the first light source. When the light source unit is scanning the book document in a third region shifted toward a side of the second light source from the center position, the light quantity of the first light source becomes larger than the light quantity of the second light source. A sum of both light quantities is controlled to be constant.