Patent ID: 7848697
Filing Date: 2010-12-07
Classification: B42C,B65H,G03G

Abstract:
1. A sheet processing apparatus, comprising: a conveying unit, which conveys a sheet; a stacking unit on which the sheet conveyed by the conveying unit is stacked; a processing unit, which processes the sheet stacked on the stacking unit; a buffering unit, which allows the sheet conveyed to the stacking unit by the conveying unit to pass, and buffers a predetermined number of sheets to be passed during an operation of the processing unit; a transferring unit arranged in a region for the predetermined number of buffered sheets buffered to the buffering unit, for receiving the predetermined number of buffered sheets and closing to nip the predetermined number of buffered sheets to transfer the predetermined number of buffered sheets from the buffering unit to the stacking unit after the predetermined number of buffered sheets are buffered; and a controlling unit, which controls a sheet conveying speed of the conveying unit, wherein after the controlling unit detects a last sheet of the predetermined number of buffered sheets, the controlling unit controls the conveying unit to reduce the sheet conveying speed of the conveying unit to reduce a sheet conveying speed of a sheet subsequent to the last sheet of the predetermined number of buffered sheets so that a leading edge of the subsequent sheet is prevented from interfering with the transferring unit before the transferring unit is opened, and the controlling unit restores the sheet conveying speed of the conveying unit after the subsequent sheet is conveyed.