Digital BW, The Print

--- In DigitalBlackandWhiteThePrint@yahoogroups.com, "Paul Roark"
<paul.roark@v...> wrote:
...
> My tests, however, are consistent with what I've heard -- that
carbon does
> yellow slightly.  I can't tell why or, for example, whether it is
the base
> or the pigment itself.  

I don't know if this is relevant any more, but long ago Dan Culbertson
did some tests with the clear base from MIS. It did not yellow on it's
own. I'm sure the base has probably evolved since then so maybe this
is too old to take seriously. On the other hand, at that same time,
the quad inks themselves did yellow.
I don't know why the prints yellow and certainly don't have the
chemistry background you guys do, but every ink I've ever used tends
to cure or change appearance as it dries on paper. Even though the
print itself yellows slightly, could it be that the carbon component
itself is not, and that all components (including paper wet vrs dry,
and the coating too) are simply settling in?
Tyler