Whether fascicle setting of bookbinding printing is designated is determined. When printing in several bundles is designated, imposition processing and drawing processing are performed on a plurality of printing surfaces on the basis of the fascicle setting. After each fascicle is printed, notification processing which prompts a printer driver to issue a saddle stitch command is executed. Fascicle processing of bookbinding printing can be transmitted as one printing job to a printer, and the fascicle bookbinding printing function can be realized.