Digital BW, The Print

--- In DigitalBlackandWhiteThePrint@yahoogroups.com, "Paul Roark"
<paul.roark@v...> wrote:
> 
> 
> > ... Much to Bill Bergh's dismay, the IJM's Carbon
> > Sepia inkset, which he designed as supposedly pure carbon, fell
> > slightly short of the other sets that do have color pigs mixed into
> > them for hue, in their RIT tests. There seemed to be some positive
> > symbiotic effect on longevity.
> >...
> 
> I never understood that either...

I just figure there's a lot of ingredients in these inksets we know
nothing about that could have an impact. There has to be many
components that are not actually image forming, but simply allow the
inks to perform, deliver, sit well, ship well, taste good, etc..
Those have to have some impact on longevity, chemical robustness,
etc.. I have no idea what I'm talking about here.
Perhaps there is something in the Cone formula that has some slight
negative impact on longevity under a certain circumstance, and the
presence of the color pigment inhibits it a bit.
I'm sure you have a much better grasp on what's in this stuff than
most of us, it all seems a but mysterious.
Tyler