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. 15, 2009
Filed:
Jan. 25, 2008
Seiji Nishizawa, Chuo, JP;
Kazuhisa Mochizuki, Yamanashi-ken, JP;
Masataka Hamada, Fuefuki, JP;
Nisca Corporation, Minamikoma-Gun, Yamanashi-Ken, JP;
Abstract
An image reading apparatus includes a reading unit having contact glass through which an image is read from a document, backup glass located opposite the contact glass of the reading unit so as to form a conveying path between the backup glass and the contact glass through which the document is passed, a white member located on a rear surface side of the backup glass which is different from a contact glass side of the backup glass, a support plate that allows the white member to pivot between a position where the white member stands opposite the contact glass via the backup glass and a retract position where the white member is retracted from the position where the white member stands opposite the contact glass, and a regulating member provided between the backup glass and the white member so as to create a specified gap between the white member and the rear surface of the transparent member. Thus, a fixed distance is always maintained between the movable white member, located opposite the reading position, and the document reading surface. As a result, accurate shading correction data is acquired.