An image forming apparatus for conducting a different manner of copy process for each of a plurality of regions which are subdivided from one original document. The image forming apparatus includes a plurality of levers for assigning boundaries of each region and a specifying device for specifying the number of regions and pattern of the copy process executed in each region. At least one of the plurality of designating levers are invalidated so as to achieve agreement between the number of the regions specified by the specifying device and the number of the regions subdivided by the designating levers when these numbers do not agree.