Patent ID: 7175174

Claim:
A sheet post-process apparatus, comprising: a plurality of rollers which receive sheets from a multi-function peripheral and convey the sheets forward; a waiting tray which is provided in a conveying path and holds some of the sheets conveyed from the rollers when a bundle of sheets needs to be post-processed, the waiting tray being integrally formed with upper and lower alignment members and bottom portions, wherein the sheets on the waiting tray lie substantially parallel to the bottom portions and substantially perpendicular to the upper alignment members to align the sheets; a processing tray which holds the bundle of sheets before post-processing; and an open and close mechanism configured to open and close the waiting tray in a transverse direction orthogonal to a sheet conveying direction, wherein the open and close mechanism is a rack and pinion mechanism, and wherein the lower alignment members extend beyond the bottom portions in a vertical direction to align the bundle of sheets on the processing tray.