From: Peter Marshall (petermarshall@cix.co.uk)
Date: 04/25/03-02:37:53 AM Z
Sandy,
I'd tend to agree with you, and possibly even go a little further. When I
was playing with these processes I worked with a common ferric oxalate
sensitiser that could end up producing silver, platinum or mixed silver
platinum prints. I also made a gold print with it, though not as
successfully as I would have liked, and some of the platinums were
platinum/palladium mixtures.
Glycerine development was used for platinum papers, notably by Stieglitz,
so I don't think much is new there.
So I tend to classify about all of the iron oxalate based processes
together, not just kallitype and Satista.
Peter Marshall
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> Peter Marshall wrote:
>
>
>
> >
> >Sandy,
> >
> >1. When I tried out the process, the point seemed to be that they were
> >visually identical to platinum and platinum-like kallitype prints.
> >
> >2. Satista has a cost advantage over platinum, which was the reason for
> >its introduction. I think the archival properties are likely to be
> >dependent on the amount of iron left in the print and the state of
> >division of the silver in the image. Platinum toning has been claimed
> to
> >increase the stability of kallitypes.
> >
>
>
> I don't want to make too big a deal of a name, but after reading a
> little more about Satista I am inclined to classify it as a variation
> of traditional kallitype (based on ferric oxalate). Virtually
> everything that you do with Satista can also be done with traditional
> kallitype and the only really unique aspect, at least to my way of
> thinking, is the glycerine development procedure. And of course if
> you look at the history of kallitype you will find that there have
> been many variations on develoment over the years. Stevens, for
> example, describes kallitype as Type I and Type 11, with the major
> difference whether the silver is incorporated into the sensitizing
> solution and coated on the paper, or incorporated into the developer.
>
>
> Note: I do not consider VDB a form of kallitype. VDB is based on
> ferric ammonium citrate and the final result does not have the
> richness of a kallitype based on ferric oxalate.
>
> So, for what it is worth there appear to me to be three major
> variations of the silver-iron process being practiced today.
>
> 1. Kallitype, based on ferric oxalate, including Satista and both
> Type 1 and Type 11 kallitype as described by Stevens.
>
> 2. VDB, based on ferric ammonium citrate.
>
> 3. Argyroptype, based on silver oxide.
>
>
> Sandy King
> --
>
>
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