Patent ID: 7354035

Claim:
A Sheet post-process apparatus, comprising: a standby tray configured to make sheets stand by, a processing tray arranged under said standby tray configured to load said sheets dropped and fed from said standby tray and supplied sheets not via said standby tray, a processing mechanism configured to post-process said sheets loaded on said processing tray, and a paper ejection tray configured to load said sheets ejected from said processing tray after ending of said post process, and a standby tray rotating body configured to perform a first operation matching said sheets loaded on said standby tray by rotating in a first direction, in contact with said sheets from an upper side of said standby tray and a second operation conveying said sheets loaded on said standby tray toward said paper ejection tray by rotating in a second direction different from the first direction, in contact with said sheets from the upper side of said standby tray, wherein the standby tray rotating body is lifted upward and placed at a distance from the standby tray when the sheets are supplied to the processing tray.