From: Carl Weese (cweese@earthlink.net)
Date: 01/25/02-04:51:14 PM Z
Clay,
LiPd works very well for develop-out prints, just use standard ferric
oxalate. I prefer the final print color with some papers to standard
palladium solution. Also, you can keep just one metal solution and print POP
or DO by switching ferrics.---Carl
--
web site with picture galleries
and workshop information at:
http://home.earthlink.net/~cweese/
----------
>From: clay <wcharmon@wt.net>
>To: alt-photo-process-l@sask.usask.ca
>Subject: Re: Na2PtCl6
>Date: Fri, Jan 25, 2002, 4:03 PM
>
> I'm curious. You mentioned LiPd. Are you doing tests using POP pt/pd
> (Ziatype or Ware process) or are you doing develop out?
>
> I did some basic step wedge tests using Na2 and the bottom line seemed to be
> that 1 drop of Na2 substituted for 1 drop of metal in a 6/6/1 ratio of
> sensitizer/metal/Na2 had exactly the same contrast increasing effect as
> using a 3/3/6 ratio of sensitizer 1/ sensitizer 2 (Pt) with chlorate/metal
> salt. I was doing the develop-out method with potassium oxalate developer at
> 90 degrees F. I noticed a paper speed _decrease_ with the Na2 almost
> identical to the speed loss associated with using the #2 sensitizer solution
> in the above-mentioned ratio.
>
> Clay
> ----------
>>From: Witho Worms en Jorien van Santen <verzet13@xs4all.nl>
>>To: alt-photo-process-l@skyway.usask.ca
>>Subject: Na2PtCl6
>>Date: Fri, Jan 25, 2002, 1:58 PM
>>
>
>>Linas, today I did some printing and made a fast test with the Na2PtCl6. I
>>used it as a 25% substitute for LiPd and made a few big prints, 0,5 and 1 ml
>>of sensitize.What I found was that it compresses the darker values in the
>>print. The get the same dark tones as in a print without Cl6 I had to reduce
>>my printing time. The faster printing time gives the impression of a harder
>>print. As far as I could see the lighter values in the print were almost not
>>affected by use the CL6.
>>
>>
>>Witho
>>
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