Clay,
I think you might be on to something there... I noticed when printing that
the humidity was 30-35%, which I wouldn't do at home. I use a humidifier to
boost to 60%. So it may be that humidity, as it often is, is the culprit.
It may be that the Arches Platine has a different sizing that is affected
more by humidity than the other papers—since they are all of the same weight.
I too get a very small amount of this with COT 320, so I just spray the
prints with a kitchen sink spray (gently and at an angle) to wash it off. I do
this after the development phase and when it goes in the wash. I think that
some of this is residual black sludge in the developer that lays on the paper
after development. It can be banished from the developer with a coffee
filter.....don't use the same filter for coffee later unless you are into
PalladioLatte.
I'll help Chris rig a humidity tent today :)
Best Wishes,
Mark Nelson
In a message dated 8/12/06 4:40:51 AM, wcharmon@wt.net writes:
> Really weird. I have never seen this problem to this degree in my
> darkroom. On question: What is your ambient humdity? The reason I ask
> is that I observed the same thing happen at a workshop at the
> Formulary in August many years back. And I know it is more arid
> there, than say, Houston in August (Otherwise know as Dhaka-on-the-Gulf.
>
> Clay
>
Mark Nelson
Precision Digital Negatives
Received on 08/13/06-08:05:01 PM Z
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