Re: Gum Stain


Joao Ribeiro (jribeiro@greco.com.br)
Sat, 27 Nov 1999 22:35:06 -0200


Hi Judy,

> I'd suggest changing the mix, to a higher proportion of dichromate (he
> doesn't say what he's using)

I'm using NH4 dicrom. 1:1 with gum

> which will make a harder emulsion, and/or
> exposing longer. Each mix is different, so it's hard to generalize, but my
> feeling is that a longer exposure will come to the same point of
> development without staining if you develop longer.

So I should make the hole print harder (speaking about the gum physical state)
and develop longer, is that it?

> The other point is that if it's just a one-coat gum, some *light* staining
> is not only acceptable, but often attractive. Sarah Van Keuren and I
> discuss this issue in PF #3, by the way...

I'll read it again, ThanksJoao



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