Judy Seigel (jseigel@panix.com)
Mon, 07 Jun 1999 14:11:30 -0400 (EDT)
On Mon, 7 Jun 1999, Wayde Allen wrote:
> On Fri, 4 Jun 1999, garimo wrote:
>
> > >Is there any relatively simple process that uses positives instead of
> > >negatives?
> >
> > You can do gum printing with white and light colors on black paper... I
> > want to some day...
>
> I tried this on a piece of black construciton paper. It works, kind of,
> but I didn't get anough buildup of the white pigment to overpower the
> black substrate. Of course, I might not have had a long enough exposure,
> sizing might have helped, and you could probably build up the white layer
> with multiple printing.
I've had good luck making black paper with a bunch of black (dry) pigment
rubbed up in gum and dichromate, coated onto white paper and exposed HARD.
Then briefly soaked to remove excess dichromate and dried. harden if you
like. Makes a great paper for printing on in white.
Judy
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