Patent ID: 7832716

Claim:
A sheet processing apparatus comprising: a sheet supporting table which supports a sheet stack made of a plurality of sheets which have been folded; a stopper against which a first edge of the sheet stack on the sheet supporting table is pressed, wherein the first edge is located at a side of the sheet stack to be cut; and a pushing member which is movable in a direction towards the stopper to push a second edge of the sheet stack located at a folded side of the sheet stack so that the first edge of the sheet stack is pressed against the stopper, wherein the pushing member comprises a first surface which is inclined with respect to a sheet supporting surface of the sheet supporting table so that the first surface restricts a height of the folded part of the sheet stack with respect to the sheet supporting surface when the pushing member presses the sheet stack towards the stopper, and wherein a height between the first surface and the supporting surface is changeable.