SHEET BUNDLE BINDING TREATMENT DEVICE AND IMAGE FORMATION SYSTEM HAVING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a sheet bundle binding treatment device in which a sheet bundle subjected to a staple-less binding treatment can be peeled easily from crimp teeth.MEANS FOR SOLVING THE PROBLEM: Peeling of a sheet bundle Sb from crimp teeth 27b, 27c can be facilitated by applying a rotation operation around a corner part Sc being in close contact with the crimp teeth to the sheet bundle by extruding the rear end of the sheet bundle by a first conveyance member 60A for conveying the sheet bundle in the sheet discharge direction or the side end edge of the sheet bundle by a side alignment member 46R for moving the sheet bundle in the direction orthogonal to the sheet discharge direction after performing a binding treatment with crimping deformation of the corner part of the sheet bundle accumulated on a treatment tray 24 between the crimp teeth of staple-less binding means 27.SELECTED DRAWING: Figure 19-2