24 Issue 253 - June / July 2024 www.signlink.co.uk Should you be producing a large number of sheets, the Nyala 4 can provide an uplift to production through what swissQprint has called Tandem printing. The principle here is very simple in as much as the table has a front and rear sector meaning once the operator has loaded the front sector with new substrate, the printer sets off printing on those sheets whilst the operator then turns their attention to the rear sector loading new substrate there. As the printhead carriage has passed over the front sheets it starts to print the sheets placed on the rear of the machine, allowing the operator to exchange printed sheets on the front of the machine with new substrate; all very clever and most of all, productive. Patented Technologies Regardless of the sheets and methods of production chosen, swissQprint has one really clever way to hold the sheet to the table. Vacuum is always a challenge for engineers designing equipment and operators using it, it just requires one or two aligned against for accurate repeatability. If you are completing double-sided printing on the Nyala 4, this register pin system comes to the fore. By planning the image on pre-cut substrate, you can simply flip the board and register it back on the same edges as the first image and the second will back up accurately. A further board option enables the Nyala to produce on board up to four metres long. This is achieved using a simple-touse but sophisticated feed system. The oversized panel is held firmly on the flatbed table and when the print carriage reaches the end of the table, the substrate is automatically transitioned to a place where the printhead can seamlessly pick up from where it left off. Substrate weight is also not a problem for this machine as it can easily hold sheets up to 300kg thanks to the vacuum table. Substrates are then moved on a cushion of air for the next pass or to a point to be offloaded. UNDER THE HOOD / SWISSQPRINT NYALA 4 Sheet weight is no problem with sheets of up to 300kg being moved and secured with ease
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