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Volume: 15 | Article ID: art00032_1
The Influence of Diluted Inks and Drying on the Lightfastness of Dye Based Ink-Jet Prints
  DOI :  10.2352/ISSN.2169-4451.1999.15.1.art00032_1  Published OnlineJanuary 1999

Since the market introduction of several wide-format ink-jet printer models, that offer 6-12 different ink channels, the use of diluted inks (mostly cyan and magenta) has become widespread. Main advantage of such a printer is an improved print quality in highlights. However, the challenge for ink and media developers to keep lightfastness and image permanence with these systems on a constant high level has often been underestimated.In diluted inks, the ratio of solvent to dye increases considerably. For the same image, more ink is applied, with a direct consequence on dot pattern and, as will be shown, on lightfastness of single colors and via catalytic fading on mixed colors.A large part of professionally made prints are laminated for better protection. Higher throughputs, faster printers and porous, “fast-dry” media mislead to shorter waiting times between printing and lamination. This can have a severe impact on lightfastness.Keywords: lightfastness, ink solvent, drying time, lamination, diluted inks.

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Stefan Schüttel, Rita Hofmann, "The Influence of Diluted Inks and Drying on the Lightfastness of Dye Based Ink-Jet Printsin Proc. IS&T Int'l Conf. on Digital Printing Technologies (NIP15),  1999,  pp 120 - 123,

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