US Patent 7145691 Image reading apparatus

An image reading system comprises: an image reading part for scanning an original image at a first setting during a first scanning to generate a first image data, and for scanning an original image at a second setting, which is different from the first setting, during a second scanning to generate a second image data; an image processing part for using the first and second image data to generate a new image data; and a storage part for storing the new image data generated by the image processing part.