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:
Sep. 25, 2012
Filed:
Mar. 13, 2009
Takayuki Sugiyama, Utsunomiya, JP;
Takayuki Sugiyama, Utsunomiya, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An image reading apparatus includes a reading system having a plurality of line sensors extending in a main-scan direction, an imaging optical system for imaging, on the line sensors, imagewise information of an original surface, the imaging optical system including at least one anamorphic optical surface having different powers in the main-scan direction and the sub-scan direction, a scanning system for relatively scanning the original surface and the reading means in a sub-scan direction to read the imagewise information of the original surface, and an image correcting system for correcting imagewise information of the original surface read by each line sensor, on the basis of an imaging-position-deviation correction amount of an image in the sub-scan direction corresponding to a reading position in the main-scan direction, calculated based on an imaging position deviation amount of an image in the sub-scan direction corresponding to the reading position in the main-scan direction upon the line sensors, as calculated from optical design value of the imaging optical system.