Post-processing apparatus and image-forming system

摘要

A post-processing apparatus post-processing a booklet having a bundle of center-folded sheets. The apparatus comprises a trimming apparatus trimming an edge portion of the booklet, a skew-correcting device correcting a skew of the booklet, a pressing device flattening the booklet by pressing, and a transferring device conveying the booklet into a trimming process opening section of the trimming apparatus by transferring the pressing device. And the booklet the skew of which is corrected by the skew-correcting device is pressed by the pressing device and the booklet is conveyed into the trimming process opening section by the transferring device while the booklet is pressed by the pressing device.