Patent ID: 6607188
Filing Date: 2003-08-19
Classification: B27F,B65H

Abstract:
A sheet post-processing apparatus, comprising:a head portion for driving a staple into a sheet bundle and having a base portion and an attachment portion detachable from the base portion; an anvil portion arranged to face said head portion for receiving and bending the staple driven from the head portion; moving means for relatively moving said head portion, said anvil portion and said sheet bundle along surfaces of the sheet bundle placed at a stitching position between the head portion and the anvil portion, said surfaces of the sheet bundle facing the head portion and the anvil portion; a head portion support member for engaging and supporting the base portion of said head portion; an anvil portion support member for supporting said anvil portion; detecting means for detecting whether or not said attachment portion is attached to the base portion of the head portion; and means for inhibiting the head portion and the anvil portion from stitching according to a detecting signal from the detecting means.