摘要:
A sheet processing apparatus capable of creating fold sections suitable for an apparatus that performs saddle-stitch processing on fold sections. A sheet processing apparatus includes a printer engine configured to form an image on a recording sheet. The sheet processing apparatus sets a bookbinding lap which is a distance between a first sheet end and a second sheet end of the recording sheet assumed to have been folded in two. A finisher creates the fold section by forming a folding line on recording sheets according to a reference line which is shifted from the centerline of the recording sheet by the bookbinding lap.