swissQprint, the manufacturer of high-end inkjet systems, had two printers on show for the first time at Fespa. Different configurations demonstrated the many and varied possibilities of these modular, precision-built machines. An all-new tandem function for non-stop printing and a reinforced roll to roll option to allow printing of flexible media up to 3.2 m wide were among the presentation highlights. On top of that, the Swiss also launched the 9 picolitre droplet for their printers.
Fespa 2013 saw the unexpected launch of a new, 9 picolitre droplet size for swissQprint inkjet systems. It gives users an additional production mode for ultra-exacting photo print work with fine colour gradations, ideal for subjects that require uniform expanses of colour without screening artefacts, and reproduction of fine detail. It fulfils the needs of pin-sharp typography with bravura, too, and all of this with no appreciable reduction in speed compared to the previous highest-quality mode.
The output software automatically selects the 9 picolitre droplet size when RIPing print files for fine art applications. With light shades in use, the maximum visual resolution on the substrate reaches 2160 dpi. Small print runs and prototypes may thus be displayed confidently alongside offset reproductions. The smaller droplets represent an attractive extension of capabilities for digital printers, with potential to draw new jobs and customers.
swissQprint reported that the new droplet size is integrated immediately and at no extra cost on all three of the company’s models: Oryx, Impala, and Nyala. The usual 14 picolitre droplet size will of course remain the default.
Clever roll handling
swissQprint systems are known for their versatility, which includes the diversity of materials that the Nyala model can process with its newly-launched roll to roll option. The range extends from films, through banners, demanding textiles, backlit media, all the way to heavyweight truck tarpaulins. Output samples displayed at the Fespa enthused even critical observers, who praised the printed images for their continuity and flawlessness. Those who witnessed demonstrations stand could see how printing went ahead under full vacuum, so that even difficult-to-manage substrates adhered totally flat and ripple-free to the 3.2 x 1.6 m printing table. The vacuum releases briefly for feeding, thus minimising frictional resistance and material stretching. A slick solution indeed, was the unanimous opinion among spectators.
Visitors who turned their attention to constructional details noted the elegance with which the new swissQprint roll to roll option docks with the machine. Yet the robust design does more than cut a visual dash; the roll retainer supports, a powerful drive, and massive bearings together ensure that heavy rolls up to 180 kg are securely held, wound and unwound. Setting-up is remarkably straightforward. Side and rear stops define precisely where the roll shaft comes to rest. The shafts themselves are equipped with a pneumatic mechanism that fixes the core in an instant, without fuss. That same mechanism also makes it possible to align material centrally across the machine, resulting in less tensile distortion than if it were aligned to the side. A roller system with compensating rockers and an intelligent controller maintains constant tension. The combined effect of small yet significant contributions such as these is what leads to impeccable printing results.
Once set up, the system handles jobs reliably and independently. The operator can attend to other matters, or confidently quit for the day and leave the machine to work through the night. The system senses the end of a roll, or when a print job has ended. If desired, it will send an email to notify the operator, who can then take prompt action.
Drivers for peak efficiency
Further possibilities are available for making the most of the machine and material. For example, multiple colour coats can be applied in a single pass, which not only saves time but also inherently produces total registration accuracy. There is a special mode for parallel printing of two rolls side by side, provided their material and dimensions are identical. Nyala‘s nine freely configurable print heads can be configured with quadruple CMYK, doubling the throughput compared to a dual CMYK configuration. Depending on quality requirements, the machine can print at a variety of speeds: from 180 m²/h draft mode, which may also be suitable for certain production requirements, right up to finest-grade results at a rate of 44 m²/h.
The new roll to roll option for the Nyala model is available starting in autumn 2013. With this further development, swissQprint is once more living up to its reputation as a producer of precision flatbed printers for practical applications.
Tandem print mode
As further highlight swissQprint presented an efficiency-boosting print mode: the tandem function keeps the machine running non-stop and makes waiting times a thing of the past. The mode is available for all three swissQprint inkjet systems; Oryx, Impala and Nyala. It is designed for large series of smaller substrates. The print images can be identical or different. One conceivable use is the personalisation of direct marketing media produced using an offset process.
The new function will be of interest to anyone wanting to achieve the greatest possible output for serial production in digital printing. The principle is straightforward: the print table is loaded as usual from the front and the print job is started. Whilst the machine processes the first job, the operator starts to load the rear half of the table. The printing beam moves to the rear and continues the printing process as soon as the front job is finished and the operator confirms that the rear job is ready to start. The operator meanwhile removes the finished prints from the front area and prepares the next substrates for printing. And so production continues until the series is finished. The machine works non-stop without interruption. Greater efficiency is virtually inconceivable.
Case study proves efficiency
A practical test carried out by a user delivered the following results: the production of 1,000 panels (format: 400 x 400 mm) using a swissQprint Nyala had previously taken 7 hours and 40 minutes.
With the machine working in tandem mode, the operator was able to start processing a new job after 4 hours and 50 minutes. That equates to a time saving of around 37%.
Tandem operation comes as standard with the Nyala model from swissQprint, and an option for the Oryx and Impala models. By the way, it is up to the user to upgrade their machine with other variants as swissQprint systems have a modular design. Depending on the needs the printing system can be also used for extra long panels of up 4 metres or for roll stock.
Further information: www.swissqprint.com or www.spandex.co.uk