Patent ID: 8336869
Filing Date: 2012-12-25
Classification: B65H

Abstract:
1. A sheet processing apparatus, comprising: a folding roller pair configured to fold a sheet or a sheet bundle by a nip portion and to convey a folded sheet or a folded sheet bundle; a sheet pushing member configured to perform a pushing operation in which a tip of the sheet pushing member pushes the sheet or the sheet bundle into the nip portion of the folding roller pair; a driving unit configured to drive the sheet pushing member to perform the pushing operation; a detection unit configured to detect whether the tip of the sheet pushing member reaches a predetermined position in a moving direction of the sheet pushing member; and a control unit configured to control the driving unit according to a result of detection by the detection unit so that the sheet pushing member repeats the pushing operation until the detection unit detects that the tip of the sheet pushing member reaches the predetermined position.