Device and method for simultaneous square folding of the spine and trimming of booklets

A post-processing device comprising:

• an inlet for receiving a booklet to be post-processed,
• an outlet for outputting the booklet after post-processing,
• a cutting assembly for cutting away an outer portion of sheets of the booklet, said cutting assembly comprising a knife and a support,
• a square folding assembly comprising a press for applying pressure along a spine of the booklet for deforming the spine to a desired square shape,
• a conveying system configured to move the booklet along a transportation path from the inlet to the outlet via the cutting assembly and the square folding assembly,
• the conveying system comprises a first feeding assembly provided between the inlet and the cutting assembly, the first feeding assembly comprises a first feeding mechanism configured to control feeding of the booklet relative to the first feeding assembly, the first feeding assembly is movably attached to the post-processing device and guided for movement back and forth along the transportation path between the inlet and the cutting assembly,
• the conveying system comprises a second feeding assembly provided between the cutting assembly and the square folding assembly, the second feeding assembly comprises a second feeding mechanism configured to control feeding of the booklet relative to the second feeding assembly, and
• a clamping assembly configured to be operable between a clamping position in which the clamping assembly clamps the spine of the booklet to hold the booklet static in a processing position for processing by the square folding assembly and the cutting assembly, and an open position in which the clamping assembly allows the booklet to move,
• at least one of the cutting assembly or the square folding assembly being movably attached to the post-processing device such that a distance between the square folding assembly and the cutting assembly is variable by movement of at least one of the cutting assembly or the square folding assembly.