Patent ID: 8687244

Claim:
An image reading apparatus, comprising: a conveying unit configured to convey an original; a reading unit configured to read the original conveyed by the conveying unit and then to read a reference plate; a generation unit configured to generate original image data corresponding to the original read by the reading unit and to generate reference image data corresponding to the reference plate read by the reading unit; a reversing unit configured to reverse surfaces of the original read by the reading unit; a determination unit configured to determine whether or not an abnormal pixel is included in the reference image data generated by the generation unit; a storing unit configured to store position information indicating a position of the abnormal pixel in a case that the determination unit determines that the abnormal pixel is included; a conveying control unit responsive to a determination that an abnormal pixel is included in the reference image data, such that with respect to an original read by the reading unit just before the reference plate is read by the reading unit, the conveying control unit is configured to control the reversing unit to reverse the surfaces of such original and to control the conveying unit to convey such original which has been reversed to a reading position of the reading unit for re-reading of the original by the reading unit; and a correction unit configured to cause the reading unit to re-read the original conveyed according to control by the conveying control unit, to cause the generation unit to generate re-read original image data corresponding to the original re-read by the reading unit, and to correct the abnormal pixel included in the re-read original image data generated by the generation unit with reference to the position information stored in the storing unit.