[pure-silver] Re: Thiocarbamide Toner
- From: DarkroomMagic <info@xxxxxxxxxxxxxxxx>
- To: PureSilverNew <pure-silver@xxxxxxxxxxxxx>
- Date: Thu, 23 Jun 2005 23:51:27 +0200
(Un)fortunately, my library is bigger than my aging memory.
Regards
Ralph W. Lambrecht
http://www.darkroomagic.com
On 2005-06-23 23:44, "Tim Rudman" <ps@xxxxxxxxxxxxxxx> wrote:
> Ralph, I believe you have a copy of my toning book. You'll find them in
> there
> Tim
>
> http://www.worldbookoflithprinting.com
>
> -----Original Message-----
> From: pure-silver-bounce@xxxxxxxxxxxxx
> [mailto:pure-silver-bounce@xxxxxxxxxxxxx] On Behalf Of DarkroomMagic
> Sent: 23 June 2005 22:42
> To: PureSilverNew
> Subject: [pure-silver] Re: Thiocarbamide Toner
>
> Richard
>
> I'm very interested in any formulas for Thiocarbamide toners!
>
>
>
>
>
> Regards
>
>
>
> Ralph W. Lambrecht
>
> http://www.darkroomagic.com
>
>
>
>
>
>
>
> On 2005-06-23 09:42, "Richard Knoppow" <dickburk@xxxxxxxxxxxxx> wrote:
>
>>
>> ----- Original Message -----
>> From: "Peter De Smidt" <pdesmidt@xxxxxxx>
>> To: <pure-silver@xxxxxxxxxxxxx>
>> Sent: Wednesday, June 22, 2005 11:35 PM
>> Subject: [pure-silver] Thiocarbamide Toner
>>
>>
>>> Does using a bleach and redevelopment in a sepia thiocarbamide toner
>>> effect print longevity? I'm asking because I had a co-worker over to
>>> my darkroom today.
>>> Years ago she worked on her college paper, and she enjoyed bw
>>> printing. But after college, with work, kids, divorce... she hadn't
>>> done anything for years. Recently, though, she found out that I had a
>>> darkroom, and she wanted to make some prints. Well, we did. As the
>>> prints were washing, she said, "Oh, I want that one to be sepia."
>>> Oh boy. I hadn't done any sepia toning for years, but I still had a
>>> bottle of thiocarbimide stock solution from at least 8 years ago.
>>> Surprisingly, It worked perfectly. It was a lot of fun, and I'm
>>> thinking about using it more often. It gave a very nice chocolate
>>> brown. We ended up toning quite a few prints.
>>>
>>> -Peter
>>
>> AFAIK the results of Thiocarbamide toning is Silver sulfide, the
>> same as when using Sodium sulfide as the redeveloper. Silver sulfide
>> is very stable so these prints should be very long lived.
>> Thiocarbamide has the advantage over Sulfide that it does not have the
>> rotten egg odor.
>> Also, the resulting color can be varied by changes in the bleach and
>> redeveloper. Many years ago Defender published a set of formulas for a
>> Thiocarbamide toner for Varigam paper, the first variable contrast
>> paper. However, it should work on any paper that standard "Sepia"
>> toner works on. I've posted the formulas in the past but I am not sure
>> its in the archive. If there is any interest I will post it again (and
>> keep it archived here this time).
>>
>> ---
>> Richard Knoppow
>> Los Angeles, CA, USA
>> dickburk@xxxxxxxxxxxxx
>>
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