Image reading apparatus and method of controlling the same

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.

Dependencies are inferred from the claim text.