Abstract
Hewlett Packard has recently introduced a novel water-based outdoor durable ink and printer solution for the wide and super-wide markets: the HP Designjet L65500. Printed images exhibit good lightfastness (with and without lamination), and durability similar to conventional solvent-based inks. The heated printing system enables imaging on a broad range of media designed for solvent ink printers, including inexpensive uncoated vinyl. Low cost, easily replaceable thermal inkjet print heads provide excellent service life and high reliability. The ink is water-based, low VOC, and HAPS-free, and as a result, no special ventilation systems are required. Image durability is provided by a novel synthetic polymer dispersion. The ink formulation and printer design considerations enabling this breakthrough technology will be discussed, including ink durability, printer dryer design, and print head reliability.
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