Upon designating bookbinding print, preview images are displayed in a layout after bookbinding. When “store” of intermediate data is designated in a print process, a spooler (302) stores intermediate data and an output job setup file in a spool file (303). When the stored job is selected, a previewer (306) displays a list of jobs, and displays a print preview image. In this case, upon setting bookbinding print, pages are displayed in a spread state and order after bookbinding. Also, the open direction (right or left open), and the bookbinding unit are also expressed on preview images.