Patent ID: 7594645
Filing Date: 2009-09-29
Classification: B65H

Abstract:
1. A sheet processing device operable to process a sheet bundle having a folded back portion, comprising: a pair of conveying rollers, having a periphery with a notch formed by first and second flat faces that intersect one another, configured to convey the sheet bundle; a pressing unit configured to press the folded back portion of the sheet bundle gripped by the pair of conveying rollers; and a control unit controlling a rotation of the pair of conveying rollers, wherein the control unit controls the rotation of the pair of conveying rollers to stop conveying the sheet bundle when the folded back portion protrudes from the pair of conveying rollers by a predetermined amount, and controls the rotation of the pair of conveying rollers such that when the folded back portion is protruding from the pair of conveying rollers by the predetermined amount, the first flat face is positioned facing the pressing unit and the second flat face is positioned to grip the sheet bundle, and wherein the pressing unit presses the folded back portion protruding from the pair of conveying rollers while the pair of conveying rollers is stopped and is gripping the sheet bundle.