Patent ID: 7043192

Claim:
A sheet post-process apparatus, the apparatus comprising: a waiting tray which temporarily retains a transported sheet in a waiting mode, and releases the retention to drop the sheet; a processing tray which bundles sheets dropped from the waiting tray to carry out predetermined processing, and ejects the sheets; and a storage tray which holds the bundle of 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 supports a distal end lower face in a sheet transport direction during retention in a waiting mode and releases the support of the sheet distal end during release of the retention; an upper face slash member which slashes a sheet distal end upper face in a processing tray direction during release of the retention; and a rotary shaft allocated in association with the distal end face in the transport direction of the sheet retained in a waiting mode, and the rotary shaft coaxially mounts the distal end upper face support member and the upper face slash member, and rotates the members, thereby moving the distal end lower face support member from a location for retention in a waiting mode to a location for releasing the retention and moving the upper face slash member to a location for slashing the sheet distal end upper face in the processing tray direction.