[pure-silver] Re: Cleaning Drying Screens
- From: Lee Carmichael <click76112@xxxxxxxxxxx>
- To: pure-silver@xxxxxxxxxxxxx
- Date: Mon, 20 Jun 2005 19:34:51 -0500
Richard,
is there documentation to this or is this speculation? As I remember there
are no msds sheets for this product. I have been toning with selenium for
over 30 years and I dont see the need for this product. Admittedly I dont
know much of anything about this product so any info you can share I would
appreciate.
lee\c
At 06:51 PM 6/20/2005, you wrote:
----- Original Message ----- From: "Lee Carmichael" <click76112@xxxxxxxxxxx>
To: <pure-silver@xxxxxxxxxxxxx>
Sent: Monday, June 20, 2005 3:53 PM
Subject: [pure-silver] Re: Cleaning Drying Screens
"Its probably good practice to rinse the screens in warm water
occasionally or to spong them off wtih water with some dishwashing
detergent in it and then rinse. IMO if you are drying with the base side
against the screens this is a non-problem."
or you could just not use this stuff.
lee\c
Sistan is about the only stabilizing agent available in the US. Fuji
makes something called Ag-Guard but it doesn't seem to be sold outside of
Japan. Sistan has the advantage of providing considerable protection to
the silver image without the changes in density or image color typical of
toning. While some papers will tone sufficiently with a Polylsulfide
toner to provide protection without a signifcant change in image
character many will not. Especially for display prints, which are
subjected to the polutants in open air, some sort of image protection is
necessary. The best is probably a treatment in something like Kodak Brown
Toner, Kodak T-8 toner, or Agfa Viradon sufficient to cause some visible
change. Treatment with such a toner provides very considerable
protection, but as indicated, may cause noticable change in color or
density or both.
Polysulfide toner has the advantage over most other toners that it
tones evenly so that partial toning is effective in protecting all
densities. Most sulfiding toners split tone. If fully toned images are
acceptable or desirable any sulfiding toner will proved very permanent
images. Polysulfide is currently the only one that will give protection
for only partial toning. Sistan is probably not as effective is toning
but is much better than the raw image, and, again, doesn't change the
appearance of the image.
---
Richard Knoppow
Los Angeles, CA, USA
dickburk@xxxxxxxxxxxxx
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