Could be atmospheric gases getting trapped inside the framed artwork.
Doesn't go through the RC as readily as the FB but still goes through.
Gases could also go through the mat boards. Using Artcare should see a
lesser effect. Why lesser in FB? because FB acts as a sump itself.
For this reason Acrylic glazing is never recommended....i.e.. too porous.
But it is used where children are near and when shipping costs must be
minimized.
Dave
I agree. Here is a list of the materials used:
0. Fome-Cor backing board 1. Colormount 100% cotton rag-board 2. Seal Colormount dry-mounting tissue 3. Ilford MG-IV FB or Kodak PolymaxII RC 4. Typical processing-chemical residue, still in the print fibers 5. The glass cleaner
My guess is now on 3 and some 4, because the MG-IV FB showed far less (but still some) than PolymaxII RC.
Regards
Ralph W. Lambrecht
http://www.darkroomagic.com
On 2006-04-18 18:36, "Ryuji Suzuki" <rs@xxxxxxxxxxxxxxx> wrote:
It's not very clear what gave rise the the glass "fog" you observed. I'd think something coming out of the matte board, backing board, adhesive, print itself, etc. adsorbed on the glass surface in the windowed area.
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