Patent ID: 8047524

Claim:
A sheet processing apparatus comprising: a processing apparatus; and a saddle unit which (a) moves from a position inside the processing apparatus, along a direction orthogonal to a sheet transport direction, to a position outside the sheet processing apparatus, (b) has a stapler, a folding blade, a pair of folding rollers, a first sheet transport path, and a second sheet transport path, the stapler configured to perform a staple process to a bundle of sheets, the folding blade and the pair of folding rollers configured to perform a folding process to the bundle of sheets, the first sheet transport path configured to have a first transport guide and a second transport guide, and transporting the sheet to the stapler and the pair of folding rollers, the first transport guide forming an outside wall surface of the first sheet transport path, the second transport guide forming an inside wall surface of the first sheet transport path, the second sheet transport path configured to transport switchback for performing the staple process and the folding process to the sheet which is transported to the first transport path, (c) in the position outside of the processing apparatus, the first transport guide is open to expose the outside of the first sheet transport path, and the second transport guide is open to expose the inside of the first sheet transport path.