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Fighting the fade

I get emails! Yesterday, I got email asking, “How can I stop posters from fading over time?” I’ve touched on this in the blog briefly, but did a little more digging.

I remembered from working with people who supervised our departmental plotter printers was that there were different inks available for the printer. Some were billed as more fade resistant than others.

But I quickly found the situation is more complicated than that, based on this page about consumer inkjet printers. The printer manufacturer and the paper and the ink are all important variables in determining fade resistance.

To start, there are various paper types. Microporous paper is more fade resistant that cast coated paper. Matte paper holds colour longer than glossy paper, according to this page.Which, again, is a trade off. Personally, I think glossy finishes looks sharper and better than matte finishes in the short term.

Ink types also come in a few different varieties. This page divided inks into dye- and pigment-based inks (pigment being more fade-resistant, because the colour comes from solid particles). This one further subdivided inks into water- and solvent- based (solvent being more fade-resistant). The trade off is that dye-based inks are brighter and look better in the short term. And there are even more types of inks.

To make matters worse, there is controversy about how to compare the longevity of printed materials. “Archival” is an advertising term that has no particular meaning consumers can rely on.

One independent testing agency, Wilhelm Imaging Research, as been working on these issues since at least 1998. A quick visit to their website is... not a quick visit to their website. There is a lot of material on their website, and it’s not organized in such a way you can quickly dip your toe in and grab some answers. It’s clearly a deep and ongoing issue.

Even knowing all of this, however, may not be information that the average conference goer can leverage for their own use. If you print in your department, the choice of printer, paper, and ink may not be up to you. Someone else probably handles purchasing and isn’t necessarily concerned about whether someone’s poster meets archival standards or not. If you are working with a commercial printer, the options they present to their customers might be limited.

The amount of fading can be reduced if you cover the poster. You might use some sort of lamination. You could frame your poster, but that will probably cost a lot more than the poster is worth.

There is only one partial solution for fading that I know: put up your poster someplace with dim light. That's why museums and art galleries are often dimly lit. If there’s no light, there’s no fading.

I know that’s not very helpful. Curse you, physics.

Related posts

Fade out

External links

Inkjet print longevity
Wilhelm Imaging Research
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