Patent ID: 7775510

Claim:
A sheet processing device that folds a sheet a plurality of times and outputs a folded sheet, the sheet processing device comprising: a cross folding unit that cross-folds the folded sheet that is folded a plurality of times at preceding stages; a reversing unit that reverses the folded sheet in a downstream side of the cross folding unit in a sheet conveying direction on the second sheet conveying path; and a sheet guide for guiding the folded sheet, which is arranged outside the outlet, wherein the cross folding unit cross-folds the folded sheet on a second sheet conveying path that is perpendicular to a first conveying path for processes of precedent stages, the reversing unit reverses the folded sheet by conveying the folded sheet in an inward direction of a main body of the sheet processing device and conveying the sheet back in an outward direction of the main body, and an outlet is provided on a sheet conveying path for conveying the folded sheet in the inward direction of the main body.