Book binding method and system for saddle-stitched bound booklet

摘要

A book binding system for a saddle-stitched bound booklet according to the present invention comprises a sheet feeding section (1) feeding sheets or sets of sheets (P) one by one, a sheet folding section (3) sequentially receiving a sheet or a set of sheets (P) from the sheet feeding section (1) and folding the sheet or the set of sheets (P) along the center line thereof, a sheet stacking section (4) stacking the sheet or the set of sheets (P) folded by the sheet folding section (3) in such a manner that the folded sheets or the folded sets of sheets are aligned with each other with respect to the fold lines thereof, a sheet stitching section (5) receiving a stack of the sheets or the sets of sheets (P') from the sheet stacking section (4) each time the predetermined number of the sheets or the sets of sheets (P) are stacked in the sheet stacking section, and stitching the stack of the sheets or the sets of sheets (P') at the fold line thereof, and a control section (46) controlling operation of the sheet feeding section (1), the sheet folding section (3) and the sheet stitching section (5).