A printing apparatus that is connectable with a post-processing apparatus, wherein the post-processing apparatus comprises a first tray, a second tray, a stacking portion, a binding unit, and a folding unit, and is configured to discharge a sheet conveyed from the printing apparatus to the first tray, without switching back the conveyed sheet and is configured to switch back a sheet conveyed from the printing apparatus to the stacking portion, stack the switched back sheet on the stacking portion, perform a binding process that binds a plurality of the stacked sheets by using the binding unit, and perform a folding process that folds the plurality of the bound sheets by using the folding unit to thereby form a brochure, and discharge the formed brochure to the second tray, comprising:
- a printer configured to form images for a plurality of pages of the brochure on a plurality of sheets;
- and
- a processor that controls the post-processing apparatus to
- in a first case where an instruction to perform the binding process and the folding process have been received and the number of the plurality of sheets is larger than a predetermined number, discharge the plurality of sheets to the first tray, and
- in a second case where the instruction to perform the binding process and the folding process has been received and the number of the plurality of sheets is smaller than the predetermined number, bind and fold the plurality of sheets to thereby form a brochure by using the binding unit and the folding unit and discharge the formed brochure to the second tray,
- wherein the order of the images for the plurality of pages to be formed by the printer in the first case and the order of the images for the plurality of pages to be formed by the printer in the second case are different from each other.