EUROPEAN CONVERTING
format printing processes of packaging, labels and plastic cards. In addition to providing complete solutions from a single source, including infeed, printing unit, ink supply, dryer, sensors, camera control, monitor and transport system, the company also offers inkjet printing modules at various performance levels for integration into existing systems. The benefit for the customer in this respect is that any previous investments can be improved, upgraded and expanded. Furthermore, they can continue to use their existing transport systems.
From inkjet to UV inkjet printing Laser, thermal transfer and inkjet printing are among the most common digital printing techniques in the fields of product identification, labeling and packaging. However, laser and thermal transfer printing both demonstrate system-related drawbacks in these fields. With respect to laser printing, the disadvantages lie in the complex safety requirements, the necessary extraction and the poor or blurred print contrast. The disadvantages of thermal transfer printing include the lifecycle costs and the limits in terms of adherence to challenging substrates. For these reasons, it is becoming more and more evident that the contactless inkjet printing process is the one with the brightest future. Inkjet printing encompasses both continuous inkjet printing; which involves electrostatic deflection of a continuous stream of droplets onto the print substrate; and Drop-on-Demand technology (DoD), whereby ink droplets are only generated on demand. Binary DoD print heads spray fixed-size droplets of just a few Pico litres. The droplet size is always the same and jetting is based on a clear yes/no decision in terms of print/not print, hence the term binary print head. These heads are capable of applying fine fonts, sharp text with crisp edge definition, clear lines and encoding on the smallest of areas. They are recommended for the digital printing of barcodes and numbering. UV-cured inks are currently one of the most versatile commodities: only UV inks are capable of durable adhesion to non-absorbent materials, such as plastic, metal, plasticized surfaces and glass, as well as to paper and cardboard. DoD print heads are ideal for use with UV inks because the nozzles cannot dry up and the inks will not harden into solid plastic until they are exposed to UV light. In addition to excellent adhesion and scratch resistance, UV-cured inks also offer a high degree of lightfastness. UV printing systems are very stable and more resilient compared to solvent-based inkjet printing systems.
ELSCAN Print Image Monitoring
ELGUIDER Web Guiding
ELTENS Web Tension Measure- ment and Control
Erhardt+Leimer GmbH Albert-Leimer-Platz 1
Atlantic Zeiser: Carton barcoding Website:
www.convertermag.co.uk
86391 Stadtbergen, Germany Telephone ++49 (0)821 24 35-627 Telefax ++49 (0)821 24 35-100
info@erhardt-leimer.com www.erhardt-leimer.com
Converter March 2011 17
ICE USA
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