Patent ID: 9387717
Filing Date: 2016-07-12
CPC Classification: B42B,B42C,B65H

Claim Text:
1. A sheet processing apparatus, comprising: a sheet conveying portion configured to convey the sheet; a sheet stacking portion on which a sheet conveyed by the sheet conveying portion is stacked; a regulating portion configured to regulate a position of the sheet on the sheet stacking portion; a binding portion configured to bind a plurality of sheets regulated by the regulating portion; a rotary member pair having a first rotary member and a second rotary member, the rotary member pair configured to convey the sheet toward the regulating portion through rotation in a first direction, and configured to convey a sheet bundle, which is bound by the binding portion, through rotation in a second direction opposite to the first direction; a moving portion configured to move the second rotary member to a separation position, at which the second rotary member is separated away from the first rotary member, after the rotary member pair conveys the sheet toward the regulating portion, and configured to move the second rotary member from the separation position to a nipping position, at which the second rotary member and the first rotary member nip the sheet bundle, before the rotary member pair conveys the bound sheet bundle; a drive portion configured to drive the first rotary member and the second rotary member; and a control portion configured to control the drive portion and the moving portion so as to rotate the rotary member pair in the second direction after the second rotary member is moved to the separation position and before the second rotary member is moved to the nipping position.