Sheet-fed printing press for numbering and varnishing of security documents, especially banknotes

摘要

There is described a sheet-fed printing press for numbering and varnishing of security documents, especially banknotes, including:
- a sheet-feeder (01) for feeding in succession printed material in the form of individual sheets carrying multiple security imprints ;
- a numbering group (02) comprising at least one numbering unit (21, 22) for numbering the sheets ;
- a varnishing group (03) located downstream of the numbering group (02) for applying varnish onto recto and verso sides of said sheets, the varnishing group (03) comprising at least a first varnishing unit (31) for applying varnish on the recto side of the sheets and at least a second varnishing unit (32) for applying varnish on the verso side of the sheets ; and
- a sheet-delivery system (04) for collecting varnished sheets coming from the varnishing group (03),
the numbering group (02) being coupled to the varnishing group (03) by means of an intermediate sheet gripper system (05) comprising space-apart gripper bars for holding the sheets by a leading edge of the sheets and transporting the sheets from the numbering group (02) to the varnishing group (03).