Digital BW, The Print

Thanks Paul.

You've clarified a lot for me. Hopefully the arrival of my UT7 inks 
next week and some experimentation will improve on my results to 
date.

I appreciate it.


--- In DigitalBlackandWhiteThePrint@yahoogroups.com, "Paul Roark" 
<paul.roark@v...> wrote:
> > ...
> 
> > 1. Will PKN ink work with UT7 inks in the printer.
> 
> PKN is for glossy printing.  So, if you put PKN in the K spot, you 
can do
> quite good BO printing on glossy papers, which is really a big 
benefit for
> color printers who want an occasional B&W glossy print.  It's 
quite neutral
> and has relatively low bronzing, especially on Kirkland.  
> 
> But, if you're using UT7, you don't need to do this.  UT7 with 
Eboni
> installed prints very nice and neutral glossy prints, which can be 
quite
> neutral even down into the deep shadows -- because it is not using 
the warm
> PK or Eboni there.  The black tone can be controlled by the ratio 
of UT7 C
> and M position inks (Red and Green curves) used in the curves.  
> 
> 
> 
> > 
> > 2. Will this ink show improvement only for gloss paper
> > (recommendations?) or for matte as well.
> 
> 
> PKN only works for glossy printing.  With matte printing you need 
to use
> Eboni (or other matte black), and I have not been able to make a 
good
> neutral version of a matte black.  The pigment loading of Eboni is 
very
> high.  Addition of color pigments to cool it lowers the dmax 
unacceptably --
> to me.
> 
>  
> > 3. How is this ink different from using Eboni Black or Photo 
Black
> > of UT7 inks for the BO process?
> 
> PKN has "blue" pigment toner in it.  Given the spectral 
characteristics of
> carbon and the blue toner, the complementary absorptions result in 
a dmax
> that is higher than either pigment by itself -- but only at the 
lower loads
> needed for optimal glossy dmax.
> 
> 
> > 
> > BTW, I'm using EEM and PR at the moment.
> 
> Stay with UT7 and Eboni.  PKN is really for color glossy printers 
or C86
> users.  You won't really benefit from it if you're using UT7.
> 
> Paul
> www.PaulRoark.com