Digital BW, The Print

At 02:06 PM 1/8/04 -0800, you wrote:
> > I'm testing a sepia ink mix made from MIS M, Y, and Eboni black.  ...
>
>Beware mixing different ink families.  They can be incompatible.  Eboni is
>particularly sensitive and will precipitate unpredictably in all of the
>available bases I've tried.  (Epson matte black is about the same.)
>
>It's safest to, for example, to stay with a family of inks that are
>engineered to be together.  I've been using the MIS 7600 family for the inks
>I've been mixing lately.  Sadly, this family does not include Eboni.  The
>only reason we can use it is because it is in a separate jet.  The MIS Photo
>K, however, is in the 7600 family.  The older inks -- MIS VM, FS, original
>Archival (not GP) do well with the older MIS base.  The 7600 family,
>unfortunately, uses a special base that MIS might not sell.

Paul,

Thanks for this info. Just when I thought I was on to something great!   My 
sepia concoction is for BO printing. I used Eboni with archival color ink 
but will now switch to another pig black. My reading of the MIS archival 
ink pages informs me that they regularly "improve" the black and it then 
becomes their standard black. I have MIS black ink going back a year or so 
(including 'double black') and should probably dump it, no?

AZ