Re: Gum Tri-Color Yellow

Katharine,
After a discussion on yellow pigments a while back, I bought some PY110
yellow from Daniel Smith. It is a very nice deep yellow, almost orange.
Very transparent and fascinating pigment. Unfortunately it does not
ballance well with quinacridine (PV 19) and thalo blue. My experience is
the same. Very dull dirty browns instead of neutral black. Thalo and
qiunacridone mix better with PY97, wich is (I think) called hansa yellow
med at daniel smith. My first attempt with tricolor gum with this
combination came out pretty good. I think that thalo and quinacridone
would work even better with more lemon looking yellows. I am testing some.

Marek Matusz

> Ender100@aol.com wrote:
>>
>> Katherine,
>>
>> How can you test the "color mix" without color separation negatives?
>>
>
> I was just looking at how the colors behave with each other, not running
> a formal test; I was simply curious what the PV19 would look like in
> combination with other colors. And I did say after all that my little
> trial doesn't prove anything. But I've printed a great lot of tricolor
> in my gum printing career and have never seen this brown tone before.
> That Mark got it with PV19 and I got it with PV19 suggests to me that
> maybe there's something about the PV19. It could be that it doesn't
> produce a deep enough magenta, that's certainly true of the PV19 that I
> used, and that could explain why the three colors together at saturation
> come out brown instead of black. That's one possibility, that may
> explain my results but not necessarily Tom's. Another is that there's
> something weird in the combination of the PV19 and the PY110. But
> something about this combination with the PV19 didn't, at least in this
> one little trial, print like the usual tricolor colors usually print in
> combination..
>
> Getting the right color balance isn't as difficult as one might think,
> in the ordinary course of printing tricolor; if you use a saturated
> medium yellow, a saturated medium red, and a saturated medium blue, you
> should get a good color balance without a lot of tinkering around..At
> least that's been true in my experience. So I'm not inclined to treat
> color balance as something very precious and fragile.
> Katharine
>
Received on Mon Jun 28 08:35:35 2004