Digital BW, The Print

> > So are you saying that there is a way to create standard icc 
profiles 
> > for printing with the UC inks that will yield a low gamut and no 
> > metamerism?
> 
> Coincidentally working on one right now, but CMYK only as per 
Ernst's
> post.
> Tyler

I got this information Eric Bullock and from Marc Levine at X-rite 
if it can be to any help....

Regards
Soren

Works pretty well...at least for me! I start the black pretty 
early...around 3-5% and let it run all the way up to 100%. I limit 
black slightly in the RIP in order to get a higher TAC, which on 
matte papers like Hahnemuhle Photo Rag is usually around 230-240%.
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About the "linear GCR" curve. There is a distinction between 
MonacoPROFILER black-curves and others: in MonacoPROFILER, the user 
can fully customize the curve. What that means is that the user can 
control both start and max endpoints - as well as curve shape. The 
user is allowed to "snap" points onto the black curve and build any 
shape they wish - including linear. While we are talking about the 
black curve, I should also point out the curve metric. The next time 
you are in MonacoPROFILER, check out the scale at the bottom of the 
curve area - you will notice it goes from 100 (white) to 0 (black). 
That's because the black generation in based on the conversion from 
Lab to device. The black start is actually in L*, so you can figure 
out at exactly what incoming L* value that you will start to write 
black.

Back to the point. Using more black in your separation forces less 
CMY. If you look at the printing behavior of Epson printers 
specifically, you will find a very "normal behavior" of the black as 
it increases in density. Yes, the black has a "bronze" cast to it, 
but is very stable and easily corrected (at least, by Monaco 
software). We have many users using the black generation setup in 
this way with Epson printers.

Lastly, GCR does not affect the properties of the ink or the media, 
only how output recipes are built. To have consistency between 
looking neutral and measuring neutral is at the intersection of a 
media's physical attributes and a user's color perception (in other 
words, it's subjective at best). You CAN reduce metamerisms is grays 
by reducing the amount of 3-color component in the separation - 
which is what manufacturers like Colorbyte do, and what users of 
MonacoPROFILER do when they use a linear GCR curve.