The problem you're experiencing is definitely outgassing. It occurs
mostly with RC papers, and will happen over time even without
exposure to direct sun. I suspect with direct sun it may occur even
with non RC papers. Outgassing isn't much of a problem with fine art
papers because the glycols can escape slowly through the back of the
print, whereas RC papers have a plastic barrier which prevents the
chemicals from escaping and so, end up going front-wise to the glass.
The solution, as stated by one poster, is to lay a sheet of paper
over the print for 24-48 hours. I use plain printer/copier paper.
You'll see the paper will take on the image from the darker areas of
your print where the glycols are being absorbed. I do it twice,
changing the paper after 24 hours. It mostly solves the problem,
although I'll still have problems displaying in direct sunlight - I
just don't do it. The only real solution is to stop using RC papers.
-Steve
Epson:
http://www.epson.com/cmc_upload/0/000/020/443/Gas%20Ghost%20P3.15692.pdf?BV_UseBVCookie=yes
>
>Hi
>
>I am back in the grove. In the my last show I forgot about a print and got
>expose to sunlight for an hour or so. It fog the glass and after 3
>weeks I about
>to open it but it looks fine now.
>What should I expect. Those the print is damage? I got friends that
>told me that
>the print will damage. Any input?
>
>Print is printed in Costco with 7880 printer and archival inks.
>
>Oscar Matos Linares
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