From: Sandy King (sanking@clemson.edu)
Date: 02/23/02-05:12:51 PM Z
Judy,
I appear to have lost your last message on this but remember the content.
I have no idea why you got greater contrast by adding dichromate to
the sensitizer when I did not. Perhaps one of us is absolutely wrong,
or perhaps we used different materials which changed the results. My
tests were made with fresh VDB classic solution, all mixed with
distilled water, potassium dichromate mixed with distilled water, on
Fabriano Uno, Fabriano Artististico, and Arches Aquarelle. No change
of contrast with any of these papers, just a drastic reduction in
printing speed.
If others have tried this with VDB it would be interesting to hear of
your results. However, for this type of test one really does need to
use a step table or densitometer to evaluate results.
Sandy King
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