An image reading apparatus is provided that includes a reading unit for reading images from both sides of an original, an adjusting unit that adjusts image data of the front surface and image data of the rear surface of the original, a determination unit that performs determination processing for paper fingerprint information of the rear surface of the original using image data that is obtained after adjustment of the image data of the rear surface by the adjusting unit, and a printing unit that prints the image data of the front surface. The adjusting unit performs a different adjustment for the image data of the front surface and the image data of the rear surface of the original.