A printing control device includes units that: distribute received image data page by page, perform image processing for converting the image data distributed by page into print data, and control output in accordance with a plurality of image output sections, and control the output processing of each of the plurality of the image output sections based on the print data generated by the image processing, when aggregate printing where images of a plurality of pages are merged into one image is executed. The image data is distributed so that the image data is subjected to the image processing by a single image processing unit. The plurality of the output control units generate print data in a plurality of pages by combining the plurality of page print data transferred from the image processing units, and transmit the generated print data to the image output sections corresponding to the output control units.