Both UV Arc lamps mounted on sides of the inkjet carriage in a HP Colorspan 72UVX inkjet printer were removed and replaced by Summit UV with the Black Diamond Model BD365-4/3-2 UV LED curing units. Inks used were the same broad spectrum UV-curable, CMYK pigmented ink set as provided by HP Colorspan. Substrates used included Coroplast, Gatorplast, stryrene, vinyl, polycarbonate and DiBond. 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: Prints were UV LED cured at maximum speeds in 600x600dpi production quality print mode of 18.6 sqm/hr (200 sqft/hr). Prints were also UV LED cured at slowest speeds in high quality print mode with no warping of heat-sensitive Coroplast or thin styrene substrates. Again inks used in this evaluation were standard off-the-shelve broad spectrum UV-curable type as supplied by this Inkjet OEM.

Update: Prints produced using two other CMYK ink sets as supplied by separate ink manufacturers were UV LED cured at top speeds for this HP Colorspan inkjet printer in billboard quality print mode of 37.2 sqm/hr (400 sqft/hr). Note there was no post-cure necessary to achieve these passing results.

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Both UV Arc lamps mounted on sides of the inkjet carriage in a Zund UVjet 215 inkjet printer were removed and replaced by ACCI 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 offered by this company. Substrates used included Coroplast, stryrene and vinyl. Print image used included 100% and variations of each CMYKcm process color including process black. Print process was simply turn-on UV LED curing units and load print image with instantaneous start-up.

Results: "Inks appeared to cure well with various print modes and resolutions tested," as stated by Bill Grambsch, President of ACCI. "The added useability features provided by the Summit UV LED curing units with the ability to print on more economical media including thin and heat-sensitive plastics will be of much value to users of the Zund UVjet 215-C and 215-Plus printers." Again inks used in this evaluation were standard off-the-shelve broad spectrum UV-curable type as supplied by this company for use in this wide format inkjet printer.

ACCI is the North American value-add reseller of Zund wide format inkjet printers. Their Web site for further information is www.goacci.com.

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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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RadTech Chicago 2008 - Summit UV booth # 633

Xaar 1001 printheads, INX Digital inks

CMYK process color images, 360dpi single pass print resolution

Uncoated white gloss PVC roll stock print material

Summit UV - Black Diamond GEN8 UV LED curing unit

Single UV LED light exposure, no inert curing atmosphere

Curing at maximum inkjet speed of 80 linear feet per minute

Full-cure with immediate 100% cross-hatch adhesion

We understand if you may still not believe it, so come see it firsthand. Contact us to arrange a visit.