From: clay (wcharmon@wt.net)
Date: 01/24/02-10:55:07 AM Z
Tillman:
This problem drives me nuts too. What I think is happening is that the
developer picks up a lot of free metal and this is soaked up by the paper,
but is really not 'bound' to anything since it is absorbed after the
exposure. What I have done to cure this is face-down clearing, 1st bath in
disodium EDTA, 2nd and 3rd in HCA, and at least 30 minutes of washing after
all clearing baths. Then I hang the print from at least two different
directions for about 10 minutes BEFORE throwing it on a drying rack. I
haven't had problems since doing this. I also filter the developer through a
coffee filter every once in a while.
Clay
----------
>From: Tillman Crane <tillman@tillmancrane.com>
>To: alt-photo-process-l@skyway.usask.ca
>Subject: help
>Date: Thu, Jan 24, 2002, 8:57 AM
>
>dear list,
>i have run across a problem I can't solve.
>I print pt/pd ad I prefer white borders rather than showing the brush
>strokes. i print on crane's 90lb cover bright white. I have used
>this paper for years.
>
>in the past several months I was able to print with white borders.
>When I bought new paper all of a sudden i couldn't get clean white
>borders. metal from the image bed into the white area.
>
>i use both pot oxalate and ammonium citrate developers. i tired
>coating with 1% ox acid as a precoat, better but not solved, i tired
>filtering my developer, no change. finally i mixed new ammonium
>citrate developer, presto white borders. BUT as the developer aged
>the bleeding began again.
>
>the bleeding doesn't show up on cranes cover natural white, only on
>the bright white. do you think soaking the paper in oxalic acid
>rather than just a precoat would help?? anyone else run in to this
>problem?
>
>what i can't figure out is what changes as the developer ages and
>picks up extra metal. as long as the developer is clear, then the
>borders are clear. but as the developer picks up color the bleeding
>begins. does it have something to do with the changing ph of the
>developer? the bleeding continues when I add fresh developer to the
>old developer.
>any ideas?
>thanks.
>tillman crane
>
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