Patent ID: 8496244
Filing Date: 2013-07-30
Classification: B65H,G03G

Abstract:
1. A sheet processing apparatus comprising: a waiting tray on which a recording medium received from an image forming apparatus is temporarily stacked; a processing tray set below the waiting tray, the recording medium received from the waiting tray being stacked on the processing tray; a paddle set above the processing tray and configured to align the recording medium stacked on the processing tray in a longitudinal direction; a paddle driving device configured to drive the paddle; a longitudinal alignment roller set on a recording medium stacking surface of the processing tray and configured to align the recording medium in the longitudinal direction; a longitudinal-alignment-roller driving device configured to drive the longitudinal alignment roller; and a control section configured to control the longitudinal-alignment-roller driving device such that the longitudinal alignment roller performs acceleration and deceleration of rotating speed at least twice during one longitudinal alignment operation.