Re: Toning cyanotypes

Formula:
2-5% alkaline solution bleach (sod carb like Arm and Hammer WAshing Soda,
ammonia, sod or pot hydroxide, borax like 20 mule team at the grocery store)
and 3-5% tannic acid bath or cold tea. Strong tea gives a warmer tone than
tannic acid. Cheap tea has more tannic than expensive. Or, use steeped
black walnuts, not tea, for toning.
Tea is photosensitive; if there is a problem with archivalness it may be
that it darkens with exposure to light. Try it--leave your print half
covered out in the sun for 2 days and you'll see a change. Or, at least,
that happens when you tea tone BW regular paper, which btw, tones all
highlights and darks directly, not tonally or proportionately. It may not
happen the same with cyano since cyano will bleach in the sun and revert to
dark in the dark again.
Chris
----- Original Message -----
From: "Robert W. Schramm" <schrammrus@hotmail.com>
To: <alt-photo-process-l@sask.usask.ca>
Sent: Sunday, November 23, 2003 9:27 PM
Subject: Re: Toning cyanotypes

>
> I believe cyanotypes have a tonal range pretty close to a
platinotype.
> There are those who believe that they lack permanence, but that has not
been
> my experience. Most of the platinotypes I have seen have brown tones, but
> the ones I make are black and white. It all depends on the developer you
> use.
> Assuming you instructor was referring to a brown and white platinum print,
> it is possible to tone a cyanotype brown using tannic acid and sodium
> carbonate. I don't have the formula at my fingertips but someone on the
list
> may supply it. If not send me an email and I will look it up and send it
to
> you.
>
> There is also a formula which will tone the cyanotypes so that they
are
> black and white. I tried it at one time but I didn't care for the results.
> The toned images looked grey rather than black and lost considerable
> contrast.
>
> Best wishes,
>
> Bob Schramm
>
> Check out my web page at:
>
> http://www.SchrammStudio.com
>
>
>
>
>
>
>
>
> >From: Perry <perry@vivalarevolution.com>
> >Reply-To: alt-photo-process-l@sask.usask.ca
> >To: alt photo <alt-photo-process-l@sask.usask.ca>
> >Subject: Toning cyanotypes
> >Date: Sun, 23 Nov 2003 15:32:04 -0800
> >
> >A while ago one of my teachers said he had come across a way to tone
> >cyanotypes them look very similar to a palladium print. I was wondering
if
> >anyone knew anything about this or if perhaps someone had a list of the
> >chemistry and proportions so I could try it.
> >
> >Thanks,
> >Perry
> >
>
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Received on Mon Nov 24 13:49:18 2003