From: Dave Rose (photo@wir.net)
Date: 05/09/01-10:21:01 PM Z
Dear Peter:
Thank you for your informative and very interesting posting.
I've read your chapter describing the Fredrick Temperaprint in Barnier's
COMING INTO FOCUS. One of these days I'm going to try it.
Although I like the 'muddy' color of three-color gum (for certain subjects),
I'd love to make intense three-color prints rivaling Cibachrome.
Peter wrote:
(snip)
> I operate a similar system to gum /bichro using whole egg as an emulsion
and
> have for the past few years managed to achieve highly saturated coloration
in
> my prints . In formulating this process the following
> pigments have been most helpful in obtaining strong saturated colour
>
> .Cyan = Phalocyanine Blue (ASTM PB15) has a lot of names Windsor, Monstral
blue
> etc. and comes as previously stated in a green or red shade. I use the red
> shade most of the time. This is an easy colour to use, but it does have a
high
> tinting strength , and therefore liable to stain.
>
> Magenta = Acra Violet (Quinicridone Magenta ASTM PR 122) will need more
coats
> to reach the same colour value as the phalocyanine blue
>
> Yellow = Hansa Yellow Medium (Arylide Yellow ASTM PY 73) a nice
transparent
> pigment
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