Patent ID: 7344131

Claim:
A sheet post-process system, comprising: a first processing mechanism for performing a first post process for sheets ejected from an image forming apparatus; a standby tray for making the sheets ejected from the image forming apparatus and/or sheets ejected from the first processing mechanism stand by; a gate for branching the sheets ejected from the image forming apparatus to the first processing mechanism when the first post process is to be performed and to the standby tray when the first post process is not to be performed; a processing tray arranged under the standby tray for loading the sheets dropped and fed from the standby tray and the sheets ejected from the image forming apparatus or the first processing mechanism not via the standby tray; a second processing mechanism for performing a second post process for the plurality of sheets loaded on the processing tray; and a paper ejection tray for directly loading the sheets after ending either the first post process or the second post process, wherein the standby tray is composed of at least a pair of tray members for respectively supporting both sides of the sheets and slides and moves the tray members to drop and feed the sheets onto the processing tray.