1. An image reading apparatus comprising: a circulating transport path for transporting an original document to circulate; plural reading sections, which are provided at different positions from each other in the circulating transport path, for respectively reading a single image plane on a same single face of the original document, to generate plural image data sets for the single image plane; and an image processing section for processing the plural image data sets generated by the plural reading sections, and creating one image data set for the single image plane on the same single face of the original document based on the plural image data set.