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:
Apr. 17, 2012
Filed:
Jan. 05, 2009
Akito Yoshimaru, Kanagawa, JP;
Nobuyuki Satoh, Kanagawa, JP;
Yasuo Sakurai, Kanagawa, JP;
Hiroshi Takahashi, Kanagawa, JP;
Masato Kobayashi, Kanagawa, JP;
Yuichi Sakurada, Tokyo, JP;
Akito Yoshimaru, Kanagawa, JP;
Nobuyuki Satoh, Kanagawa, JP;
Yasuo Sakurai, Kanagawa, JP;
Hiroshi Takahashi, Kanagawa, JP;
Masato Kobayashi, Kanagawa, JP;
Yuichi Sakurada, Tokyo, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
An image reading apparatus is disclosed that includes a contact glass on which a document is placed; an imaging device configured to image a document image based on light reflected from the document through the contact glass; plural line image sensors arranged along a main scanning direction at positions where the document image is imaged and configured so that end portions of the line image sensors adjacent to each other similarly read same image data imaged at an overlapping area; a transmitted light quantity reduction unit disposed in the overlapping area on the contact glass and configured to reduce transmitted light quantity of a light transmitted through the contact glass; and a signal correction device configured to correct the signal intensity of the image data similarly read by the line image sensors adjacent to each other.