1. An image processing apparatus comprising: a storage section including a region to be used when rasterization processing is performed with respect to intermediate language form data created by a band based on page description language form data; a plurality of operation sections; and a control section to perform the rasterization processing with respect to the intermediate language form data by using the operation sections, wherein the control section generates a plurality of segmented regions by dividing the band constituting each pieces of the intermediate language form data into a plurality of pieces based on the number of the operation sections, and assigns a segmented region for executing the rasterization processing among the segmented regions to each of the operation sections.