Hi David, pthalo (green shade) (PB 15:3) is the closest pigment to
process cyan.
On Mar 7, 2009, at 5:42 PM, dkfreed wrote:
I do photo-intaglio printing (with photopolymer plates), and I'd
like to
try multi-plate color prints. I have Phthalo Blue, Ultramarine Blue
and
Cerulean Blue inks available. I'm wondering which of these, or
combination
of these, would work as Cyan or Process Blue ink? Again this is a
print
process, not photo process.