Diasec is a patented process used for face-mounting Chromogenic prints to plexiglass and became very popular in the 1990’s by artist such as Andreas Gursky. C-prints fade whether they are mounted to plexiglass or not. Plexiglas just adds more complications. Because of this I switched to more permanent processes but many very well known artists continue to use this long out of date technology which is a puzzle for me to no end. C-print Mounted to Plexiglass & the Issues with Fading is a huge concern you need to pay attention to.
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Gursky was one of the first artists to make oversized c-prints. “If you were going to make big colour prints in the early 1990s, you had to do it chromogenically,” says Wilson. “Inkjet printing was just not good enough then.” Because c-prints on this scale are relatively recent it is only now that collectors and conservators are starting to understand fully the challenges of maintaining such works.
Another issue with Gursky’s work is that each image is face-mounted; a layer of Plexiglass is placed on top of the image and, in effect, the picture is fused to it. Conservators say they do not yet know if this process, which gives photographs a slick, wet look, accelerates degradation. Plexiglass is also sensitive and scratches easily. Because the image is fused to it, it cannot be replaced the way a layer of glass would be.
