Unmounted Versus Face-Mounted Inkjet Prints Analyses Concerning Their Light Ageing Behaviour

Four different inkjet substrates from project partners Ilford Imaging AG, Sihl Switzerland AG, and Sihl GmbH Germany were tested within the research project ‘Diasec3’. Pigmented inks were printed on different substrates and different types of face-mountings were applied. These samples were exposed for 515 Mlxh in an ageing chamber, which was constructed for the project. The inkjet print samples included the colours cyan, magenta, yellow, and black, as well as the colour mixtures CMY and skin. The question to be answered was: Are the face-mounted inkjet prints more permanent under light exposure than unmounted ones? The lightfastness was analysed by colour measurement of the samples during exposure. Changes in colour density and colour shift were monitored. All face-mountings improved the lightfastness of the inkjet prints.

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