Re: pigment

Isn't Prussian Blue the same pigment/chemical that forms cyanotype prints?
Should work quite well for printing tricolor gum. Just guessing, I've never
tried it.

Dave in Wyoming
Old Blue, latest Willys acquisition:
http://mvpimages.net/cgi-bin/willys/wtregistryview.cgi?action=view&id=667

----- Original Message -----
From: "Katharine Thayer" <kthayer@pacifier.com>
To: <alt-photo-process-l@sask.usask.ca>
Sent: Monday, November 21, 2005 6:38 PM
Subject: Re: pigment

> This is really interesting, thanks Marek.
>
> It sounds like you sometimes use Prussian blue for tricolor. I was
> discouraging the questioner (whose name I seem to have lost) from
> Prussian because I thought the greenish cast of it wouldn't work well
> for color balance in tricolor, but that was just a surmise; I've never
> used Prussian for tricolor myself, although I love it, darkened with
> ivory black, for a deep blue-greenish-black monochrome.
> kt
>
>
> On Nov 21, 2005, at 2:32 PM, Marek Matusz wrote:
>
> > Katharine,
> > Py150 is indeed a very interesting pigment. I got mine from Daniel
> > Smith. It is called NIckel Azo Yellow. It is a yellow with an olive
> > cast from the tube, but dilutes to a very nice lemon yellow. It
> > dulutes down with little color change and it is very, very strong. If
> > you like transparent pigments this yellow might be it for triclor
> > gums. I have printed a number of tricolors and it works fine, as a
> > matter of fact I have been switching more of my tricolor work to use
> > PY150. It is a cool yellow and makes most wonderful greens with thalo
> > or prussian blue.
> > I wonder if anybody that prints cyano as a blue layer has tried it.
> > Marek, Houston
> >
> >> From: Katharine Thayer <kthayer@pacifier.com>
> >> Reply-To: alt-photo-process-l@sask.usask.ca
> >> To: alt-photo-process-l@sask.usask.ca
> >> Subject: Re: pigment
> >> Date: Mon, 21 Nov 2005 09:01:38 -0800
> >>
> >>
> >> On Nov 20, 2005, at 8:14 PM, Katharine Thayer wrote:
> >>
> >>> Hi,
> >>> Just a few comments about your list:
> >>>
> >>
> >> I forgot to say something about the Winsor & Newton Transparent
> >> Yellow #653, which is Nickel Azo PY 150.. It might be an interesting
> >> choice. It's a transparent deep yellow, like PY110. I have only
> >> printed it in one or two tests, and haven't used it in actual
> >> tricolors, but it sounds like it stays more yellow in extreme
> >> dilution than PY110. (PY110 becomes rather dull and ochre-ish when
> >> thinned down to nothing, but you probably won't ever want to print
> >> it that way. For a short while, in 2001-2003 when I was interested
> >> in printing very pale pictures, I printed tricolors using very
> >> little pigment. Here, the PY110 when printed didn't even look
> >> yellow, but a dull putty color; I feared my picture wasn't going to
> >> work. But when the other colors were printed over, the PY110 took
> >> on the lovely soft buttery yellow that I had intended, which just
> >> goes to show. Here's that picture:
> >>
> >> http://www.pacifier.com/~kthayer/html/skunk.html
> >>
> >> But if you want something with a more intense yellow in tints, the
> >> nickel azo might be something to consider. But again, you might find
> >> the PY97 simpler and more straightforward. It's more a matter of
> >> personal preference than of what's "best."
> >> Katharine
> >>
> >
> >
>
>
Received on Mon Nov 21 20:53:04 2005