A new primer will extend the range of substrates that can be printed on HP Indigo digital presses. DigiPrime 4431 primer, from HP coating partner, Michelman, is said to have a much longer shelf life and lower applied cost per square metre than the earlier Topaz 10 coating. It is also water based, has low VOC content and is imperviousness to humidity.
“With the new coating, our industrial customers now have a wider variety choice of media,” says Alon Bar-Shany, vice president and general manager, Indigo Division, HP. “The release of DigiPrime 4431 coincides with the launch of the new DigiCoater machine by our partner, AB Graphic International, which is designed for use with water based coatings for HP’s industrial presses.”
The application of coating to substrates is typically carried out by substrate suppliers, or at the new authorized HP substrate treatment centres, although a number of larger, specialist printers perform substrate pre-treatment in-house.
DigiPrime 4431 is already being used by Dutch label printer Eshuis, which runs three HP Indigo presses.
“When we started digital printing in 2003, we simultaneously started coating our materials in-house,” explains Hans Poortinga, project manager digital printing. “With DigiPrime we achieve excellent results on both paper and synthetics. It adheres extremely well on all materials and is highly compatible with HP ElectroInk. Besides its performance, DigiPrime is a water based dispersion that complies with our environmental regulations.”
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