Patent ID: 7406293

Claim:
A sheet post-process apparatus, the apparatus comprising: a waiting tray to temporarily retain a transported sheet in a waiting mode, and release the retention to drop the sheet; a processing tray to align sheets dropped from the waiting tray to carry out predetermined processing, and eject the sheets; and a storage tray to hold the sheets processed and ejected on the processing tray, wherein the waiting tray comprises: left and right lower face support members which support left and right lower faces in a sheet transport direction during retention in a waiting mode and release the support of the left and right lower faces during release of the retention; a distal end lower face support member which retains a distal end lower face in the sheet transport direction during retention in a waiting mode and releases the support of the sheet distal end lower face by moving downward while rotating; and drive means capable of moving the distal end lower face support member to a location for releasing the support of the distal end lower face from a location for supporting the distal end lower face.