[alt-photo] Re: blue toner

[Richard Knoppow]

----- Original Message ----- 
From: "francis schanberger" <frangst at gmail.com>
To: "The alternative photographic processes mailing list" 
<alt-photo-process-list at lists.altphotolist.org>
Sent: Monday, March 07, 2011 10:09 AM
Subject: [alt-photo] blue toner


> Hi Everyone!
>
> I'm in a bit of a scramble to make some blue toner from 
> scratch for silver
> gelatin prints (awaiting shipment of a Photographers 
> Formulary kit). I don't
> have the Post Factory Issue handy, but if anyone knows the 
> recipe from PF or
> something similar that uses some components of the 
> Cyanotype process, would
> you email me or the Alt photo Process list?
>
> Frantic Francis Schanberger
>
>
> -- 
> francis schanberger
>
    You want the Iron-Blue toner. There are many formulas, 
here are two:

Ansco/Agfa 241

Water (at 125F or 52C).................. 500.0 ml
Ferric Amonium Citrate.................... 8.0 grams
Potassium ferricyanide.................... 8.0 grams
Acetic acid, 28%........................ 265.0 ml
Cold water to make........................ 1.0 liter

The solution should be prepared with distilled water if 
possible
Prints to be toned should be fixed in a plain, non-hardening 
fixing bath.
When prints have been fully toned they will have a greenish 
appearance but will wash out to a clear blue color.
Wash water should be slightly acidified with acetic acid 
since the blue tone is quite soluble in alkaline solutions.

Kodak T-12
Ferric ammonium citrate (green scqales).. 4.0 grams
Oxalic acid, crystals.................... 4.0 grams
Potassium ferricyanide................... 4.0 grams
Water to make............................ 1.0 liter

Dissolve each chemical separately and filter before mixing 
together.
Immerse the well-washed print in the toning bath for 10 to 
15 minutes until the desired tone is obtained.  Then wash 
until the highlights are clear.

While Kodak does not specify acidified water for washing the 
same warning applies as to the Ansco toner above.

    Note that the image from iron toning is not permanent. 
Exposure to light will cause it to fade but like blue-prints 
it can be regenerated by dark storage.
    For permanent blue images a gold toner should be used 
but gold does not give the brilliant blue of iron toner. The 
blue is more vivid on warm toned papers and the image is 
absolutely permanent.

     I don't know of any other types blue toners other than 
dye toning but there may well be one.

--
Richard Knoppow
Los Angeles, CA, USA
dickburk at ix.netcom.com