Digital BW, The Print

I've been printing with various combinations of Eboni-6 and Carbon-6 
in the C88, and the results don't differ very much, whether the EZ 
approach is used or a combination of light and dark inks is used, 
paritioned or not.  As long as the average dilution is about 13.5%, 
plus or minus a 2%, the combination will print well with no curve, 
but better with a dmax ajusting curve described previously, below.

Right now I have Eboni-6 C, Lm, and Y in the C88+.  I have a 
paritioning curve that uses the most Y and then C, with less Lm 
used.  The dense and very light inks are print just slightly more 
neutrally than the mid-dilutions, but I'm seeing less than Lab B unit 
difference in tones.  Whether the differences in tone and smoothness 
are worth the dealing with depends on personal preferences.  A single 
dilution is obviously easier to refill or make.

For general information on the Eboni-6 and Carbon-6 approaches, see 
http://www.paulroark.com/BW-Info/Eboni-6.pdf and 
http://www.paulroark.com/BW-Info/Ink-Mixing.pdf 

In general, I'm seeing slightly better quality from my hextone 
printers than from the C88+.  But nothing is easier than an easy 
quadtone mix, and it's debatable if most would notice any difference 
among the outputs.

Paul
www.PaulRoark.com  


--- In DigitalBlackandWhiteThePrint@yahoogroups.com, "pr_roark" 
<pr_roark@...> wrote:

...

> For an EZ approach that uses only Eboni and dilute Eboni, a 13.5% 
> Eboni dilution in the color positions works well.  
> That can either be a home brew per 
> http://www.paulroark.com/BW-Info/Ink-Mixing.pdf 
> or a 50/50 mix of Eboni-6 M and LC.  (MIS did not seem particularly 
> interested in making another dilution itself.)

> The C88+ driver with Matte HW paper type selected often 
> will overload the paper.  So, fine tuning the dmax per
> http://www.paulroark.com/BW-Info/Fine%20Tuning%20the%20Dmax.pdf
> makes a difference.

> Once that is done, the No Color Adjustment ramp is essentially a 
> straight line.  A curve with the dmax adjustment can be 
> dropped into an ICC for a "color managed" workflow.
...