Patent ID: 9217977
Filing Date: 2015-12-22
Classification: B26D,B26F,B42C,G03G

Abstract:
1. A bookbinding device, comprising: a convey-in path for sequentially conveying sheets into the device; stacking means for collating into bundles sheets conveyed to said stacking means from said convey-in path; adhesive-layer forming means for adding an adhesive layer to a spine-closure endface of sheet bundles from said stacking means; cover binding means for binding sheet bundles, from said adhesive-layer forming means, together with coversheets; a cover feed path for feeding coversheets to said cover binding means, said cover feed path connected to, branching from, said convey-in path; an inner-leaf transport path for transferring sheets to said stacking means, said inner-leaf transport path connected to, branching from, said convey-in path; a storage stacker disposed along the downstream end of said cover feed path, for stacking and storing sheets; perforating cutters disposed along said convey-in path, each said perforating cutter comprising a single cutting die and being configured both to form perforating punch-holes and to form crenellating notches in one or a plurality of locations in sheets conveyed along said convey-in path; positioning means disposed along said convey-in path for setting sheets into a predetermined perforating position; and control means configured for controlling said positioning means thereby controlling the position and/or number of perforations made by said perforating cutters, the bookbinding device is configured so that the transport-direction positions of said perforating cutters and of sheets fed to a perforating position in said convey-in path are shiftable relative to each other; and said control means is further configured so as, in said second operation mode, to vary the relative positions of said perforating cutters and sheets in the perforating position, and thereby adjust the size of the notch holes with which the side-edge of sheets are perforated.