Digital BW, The Print

"Greg" <dfaprinting@...> wrote:
>
>... I
> think mixing it in a beaker and letting it sit might have been a good
> idea.

What I do first if mix it, let it sit for a day, and then put it in the 
centrifuge.  My assumption is that serious agglomerations will settle 
and I'll see a significant impact of that after it's been a spin.

> Also how is the longevity affected with this mix, this being
> something that can not be determined in a short amount of time.

Also a good question.  I'll do some fade testing after all else seems 
to be OK.  The HP coatings, however, appear to be chemically attached 
to the pigments.  The C6 base is very mild, with only, for example, non-
inonic surfactants in it.  From what I can tell, they have not had any 
impact on the HP coating.  The gloss from the coating, for example, is 
still clearly there when these dilute inks are printed.  If the 
coatings are intact, the internal pigments have probably been un-
affected.  But, there are some assumptions here.  A fade test is the 
called for, and I'll do it.

Paul
www.PaulRoark.com