Patent ID: 8851464
Filing Date: 2014-10-07
Classification: B65H,G03G

Abstract:
1. A sheet post-processing device that folds a sheet output from an image forming device at a predetermined target fold position, the sheet post-processing device comprising: a first rotating body pair configured to convey the sheet; a second rotating body pair disposed along a sheet conveyance path and further downstream than the first rotating body pair in a sheet conveyance direction; a push unit configured to move a push member in a direction transverse to the sheet conveyance path so that, while the sheet is being conveyed, the push member comes into contact with the sheet and pushes the sheet into a nip of the second rotating body pair, the push member being disposed opposite the second rotating body pair across the sheet conveyance path; and a control unit configured to control the push unit so that the pushing operation of the push member is performed at a timing preset according to the target fold position; wherein: a movement speed at which the push member is moved during the pushing operation is set to be faster than a conveyance speed at which the first rotating body pair conveys the sheet; and the timing is preset so that: