Patent ID: 7607651

Claim:
A sheet processing apparatus comprising: a conveyance portion which includes a plurality of drive portions which convey a sheet, and are disposed in a direction that intersects a sheet conveyance direction; a stacking portion on which sheets conveyed by the conveyance portion are stacked; a binder which has an opening formed between an upper jaw and a lower jaw, and in which one of the upper jaw and the lower jaw is moved toward the other to perform a binding process for binding the sheets stacked in the stacking portion, wherein the opening of the binder is positioned at one side of the stacking portion in the direction which intersects the sheet conveyance direction, such that the sheet which is conveyed to the stacking portion by the conveyance portion passes through the opening of the binder; and a plurality of pressing members which restrict the height of the sheets stacked on the stacking portion, wherein a first drive portion of the plurality of drive portions, which is closest to the opening of the binder, is a single conveyance roller configured to guide the sheet toward the opening of the binder, and wherein a second drive portion of the plurality of drive portions is a conveyance roller pair, wherein the plurality of pressing members restrict the sheets at the lower side than the nip of the conveyance roller pair, and wherein a pressing member closest to the binder performs restriction at a position lower than other pressing members of said plurality of pressing members.