SADDLE-STITCHING AND FOLDING DEVICE AND SADDLE-STITCHING AND FOLDING METHOD

To provide a saddle-stitching and folding device capable of calendar bookbinding.SOLUTION: The saddle-stitching and folding device includes: a binding section that binds a sheet bundle in which a plurality of sheets are superposed; a folding section that folds the sheet bundle in two at the point where the sheet bundle is bound; and a control section. The binding section includes: a stopper; and a back jogger that abuts on a rear end of a sheet stopped by abutting on the stopper and positions the sheet in a transport direction. The control section controls the back jogger or the stopper, and the back jogger pushes and aligns a first sheet to a first distance from the stopper, and pushes and aligns a second sheet, which is longer in the transport direction than the first sheet, is transported after the first sheet and is superposed on the first sheet, to a second distance from the stopper, and the second distance is longer than the first distance.SELECTED DRAWING: Figure 5 【課題】カレンダー製本が可能な中綴じ折り装置を提供する。【解決手段】中綴じ折り装置は、複数枚のシートが重ねられたシート束を綴じる綴じ部と、綴じた箇所でシート束を２つ折りする折り部と、制御部と、を備える。綴じ部は、ストッパと、ストッパに当接して停止したシートの後端に当接し、シートを搬送方向に位置決めするバックジョガーと、を含む。制御部は、バックジョガーまたはストッパを制御し、バックジョガーによって、第１のシートをストッパから第１の距離に押し揃え、第１のシートよりも搬送方向に長く第１のシートの後に搬送されて第１のシートの上に重ねられる第２のシートを、ストッパから第２の距離に押し揃え、前記第２の距離は、前記第１の距離よりも長い。【選択図】図５