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:
Jan. 01, 2013
Filed:
Sep. 30, 2010
Ryo Mikami, Tokyo, JP;
Ryo Mikami, Tokyo, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An image reading apparatus, which reads an image on an original, including: a light source extending along a main scanning direction to illuminate the original; a plurality of line sensors configured to receive light reflected from the original and to output light intensity signals; a storage unit configured to store reference data; and a determination unit configured to obtain determination data regarding hue based on a light intensity signal output from one of the plurality of line sensors that receive light reflected from a reflective reference member illuminated by the light source and a light intensity signal output from another of the plurality of line sensors that receive light reflected from the reflective reference member illuminated by the light source and to determine a hue balance of the light source based on the determination data and the reference data stored in the storage unit.