Both UV Arc lamps mounted on sides of the inkjet carriage in a Dilli NeoTitan UVT-1606 inkjet printer were removed and replaced by an independent third-party value-add reseller with the Summit UV Black Diamond Model BD365-4/3-2 UV LED curing units. Inks used were the same broad spectrum UV-curable, CMYKcm pigmented ink set as provided by Dilli Precision. Substrates used included Coroplast, stryrene and vinyl. Print image used included 100% and variations of each CMYK process color including process black. Print process was simply turn-on UV LED curing units and load print image with instantaneous start-up.

Results: "All print modes had the ink curing properly," as stated by the owner of this company. "We printed on thin styrene at 720x720dpi and 720x1440dpi with a printhead speed of 7 without any curing issues. We printed Uni and Bi-directional (i.e. up to 160 sqft/hr) and cured ink acceptably in both modes. The cure was also acceptable at 720x360dpi Bi-directional print mode although slightly stick, but within one hour it had completed post-cure so that it was not sticky." Again inks used in this evaluation were standard off-the-shelve broad spectrum UV-curable type as supplied by this Inkjet OEM.

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