From: Sandy King (sanking@CLEMSON.EDU)
Date: 09/05/02-11:02:06 AM Z
Yes, my problem is different. I am getting a very heavy fog/stain
immediately, with exposure.
Before exposure the paper is very clean, after exposure there is a
pretty significant amount of stain in the highlights of the print
that does not wash out, and does not fix out. I am baffled because
the problem is happening with many different papers (Aches Aquarell,
Fabriano Artistico and Uno, Stonehenge, Crane, etc.) and with
several different salting formulas, all prepared with distilled
water. The 12% silver nitrate solution was prepared with distilled
water, from a stock that has worked perfectly with kallitype and
vandyke. And I have tried the silver nitrate with and without
citric acid.
Sandy
>Hi Ed,
>
>But sounds like Sandy's problem is different! Sodium chloride produces a
>more intense blue-purple colour (depending on paper, to some extent), and
>higher D-max. With amm. chloride, it's usually red-purple. But with sod.
>chloride, "spontaneous darkening" occurs rapidly, giving foggy results
>unless the salting solution contains enough citric acid... which makes the
>colour redder!
>
>When prints dry, the differences are much less than when wet. With Rochelle
>salt added, I used to get a beautiful chestnut brown (though less impressive
>on a dry print), and gold toning this gave a neutral black. If you're that
>way inclined, you could probably make salt look like platinum!
>
>
>
>Liam
>
>-----Original Message-----
>From: Ed Buffaloe [mailto:EdBuffaloe@UnblinkingEye.Com]
>Sent: 04 September 2002 11:42
>To: alt-photo-process-l@sask.usask.ca
>Subject: Re: Salted Paper
>
>
>Liam,
> You have described exactly the problem I had recently. Interestingly
>enough, my first print came out fine. Subsequent prints looked good going
>into the final wash, but ended up with a greyish stain. I hate to use
>distilled water for every first rinse, but I will if I have to. The boiling
>and cooling sounds promising.
> I note that most books recommend ammonium chloride. Does sodium
>chloride produce a different color? What about the rochelle salt?
>Ed
>
>> Sandy,
>>
>> Long time since I've done salt, but think I recognise the problem. With
>me,
>> general staining - within the image area, not margins - occurred during
>the
>> final wash. Greyish-brown colour, and could get really bad with a long
>wash
>> (toning didn't avoid it). I believe poor quality tap water (in the first
>> wash) is to blame; Terry King had the problem even worse than me and said
>> his prints stained as soon as his prints hit the first wash.
>>
>> I've also had the problem with another silver process. It doesn't strike
>in
>> all locations, but the cure is to give an initial rinse in
>> distilled/deionised for 2-3 minutes, and then continue the first wash in
>tap
>> water for as long as required. I don't think it's chlorides in the water
>> that are responsible because something else that worked was to give a
>first
>> rinse in boiled and cooled tap water, which seems to suggest that
>dissolved
>> oxygen might be the reason.
>>
>> As for directions for salt, I don't think you need them except to point
>out
>> (as you're probably aware) that you can use many different salting
>> solutions. The commonest one (in all the textbooks) is, I think, sod.
>> chloride, citric acid and sod. citrate, but I got what I considered much
>> better results with my own, of, if I remember, sod. chloride and Rochelle
>> salt. The paper also makes a difference; on heavily buffered papers like
>> some of the Arches, you'll get a proportion of silver carbonate forming
>when
>> you silver, and this gives the image colour a pronounced red shift.
>You'll
>> also see this effect with VDB.
>>
>> Hope we're talking about the same thing & that this is some use.
>>
>>
>>
>> Liam
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