Sign & Digital Graphics

July '17

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S I G N & D I G I T A L G R A P H I C S • July 2017 • 43 for interior applications, but with lamination can also be used outdoors. Various substrates are available for aqueous printing, includ- ing many types of matte, semi-gloss and glossy papers, canvases, vinyl, and cloth. Aqueous technology requires that these materi- als be coated to accept and hold the ink, and to control dot gain. Colorants in aqueous inks come in two varieties: dyes and pigments. Dyes rely on dispersed organic (plant-based) materi- als for their color while pigments use finely ground inorganic materials. Dye-based inks offer the widest color gamut and produces intense colors, but prints can fade in time when exposed to ambient UV light. For this reason dye-based inks are primarily used for indoor printing. Pigment-based inks are less vivid, but offer much better resistance to fading due to UV rays. Finished aqueous prints should be laminated and encapsulated if they are to be displayed outdoors. Solvent and Eco-Solvent Inks Traditional true solvent inks consist of color pigments sus- pended in petroleum or a petroleum by-product such as acetone or ketone as a carrier. Due to the presence of hazardous VOCs (volatile organic compounds) emitted by true solvent inks, they are not used in the U.S. as widely as they once were. More ecologically friendly eco-solvent and light-solvent inks are widely used today. They employ less toxic glycol esters as the carrier, and are an effective waterproof outdoor printing solu- tion, but they produce slower drying prints. Most eco-solvent printers can be used in an office environment with minimal or tolerable odor levels, and very low VOC levels. Latex Inks Another type of water-based ink used in wide-format print production is called Latex inks. HP developed the technology as an outdoor printing alternative to light- and eco-solvent tech- nology, and introduced it to the market in 2008. Latex inks are pigmented, water-based inks employing an aqueous-dispersed polymer ("Latex") technology that gives these aqueous inks outdoor durability with very few environmental concerns. HP Latex printers—Designjet series and HP Scitex print- ers—use internal radiant heaters and forced airflow to drive off water and cure the inks, producing dry, ready-to-use prints. Prints can be laminated immediately using cold, hot, or liq- uid processes. The company claims un-laminated durability Both thermal- and piezo-based inkjet printers can generate professional-quality, high-resolution large-format images. ClearShield Liquid Laminates • Superior UV Protection • Highly Flexible & Durable • Type II Certi ed* Simple. Reliable. Saves You Money! $ The StarLam 1600R Roll-to-Roll Laminator features easy operation and delivers a smooth, consistent coating on a wide variety of substrates. • Versatile - Coats substrates up to 64" wide • Reliable - Applies a smooth, consistent coating • Easy - Designed for single operator use • Pro table - Same protection as lm at a fraction of the cost! Increase pro tability with the StarLam 1600R. *Type II Certi cation achieved using HP ® Latex Ink on Dreamscape ® media coated with ClearShield ® Wall Armor. • 888.253.2778 • @MarabuAmerica START SAVING WITH THE STARLAM! SEE US AT BOOTH #127! Long Beach • July 20-22

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