Patent ID: 7675654
Filing Date: 2010-03-09
Classification: H04N

Abstract:
1. An image reading apparatus configured to correct image unevenness, the apparatus comprising: a document positioning plate configured to position a document thereon; a conveyance belt configured to convey the document to the document positioning plate in a first general conveying direction; an image reading unit configured to read an image of the document positioned on the document positioning plate; and an image unevenness reducing unit configured to reduce image unevenness caused by the conveyance belt deflecting in a second direction generally orthogonal to the first conveying direction of the conveyance belt, wherein the image unevenness reducing unit includes a correction unit configured to correct the image based on correction coefficients corresponding to a combination of a first position with respect to the first conveying direction and a second position with respect to the second direction of the image.