Image combining apparatus, an image reading apparatus and an image combining method

A plurality of image processing units (7a, 7b, 7c), by grouping the images by a plurality of order are continuous when arranged so that images having overlapping portions corresponding to the same portion of the subject adjacent provided for each formed group performs a process of detecting a binding position information for coupling without positional displacement and an image adjacent to the image and the image in the group by the image matching each parallel. Binding information transfer path (10a, 10b) is a bonding position information between the group two different images, among the image processing section (7a, 7b), are transferred between the image processing section (7b, 7c) .