Digital BW, The Print

Richard,

> ... I'm trying to figure out how to work with the UT-3D inkset in my 2200
...

> 
> In your PDF "http://home1.gte.net/res09aij/Profiling%20UT-3D.pdf"  you
> state:
> 
> "In general, moving a point down increases the amount of ink. So, Red
> (C = Carbon) moved down makes the print warmer, up cooler. Green (M =
> Main cool toner) moved down makes the print cooler, up warmer."
> 
> What does the Blue curve do?

The blue curve controls the Y-position ink.  That ink is a light toner that
lies roughly on the Lab a* axis (it varies somewhat with paper type and
density).  So, after I set the approximate density and lab b* value
(yellow-blue axis) I want, I move the blue curve to adjust the print to the
a* tone a want.  Usually something just below 1 looks good with a neutral
print.  With warmer prints more looks good.


> 
> What would help me wrap my head around this whole concept is what inks
> are being manipulated by the Red curve?  Green curve? and Blue curve?

The inkjet printers work on complementary colors.  So, the red curve
controls the cyan jet.  With the 3D insket, the cyan jet is where the carbon
ink is.  So, red curve = carbon ink.  Green curve = M-position ink (main
cool toner).  The blue curve = Y-position ink (a light red/magenta hue).


>  I'd ultimately like to be able to print to
> EEM and Innova PhotoSmooth and also to the Kirkland glossy with the
> warm toned Lenswork look.

With lots of different printers out there using this inkset, making curves
for them all is going to be a challenge.  I'll be looking at QTR and Roy's
approach also, which might be able to more efficiently port curves for one
system to another.  It would be nice to have a universal inkset and a system
of curves that will work on virtually any printer with just an application
of an ink load adjuster. 

Paul
www.PaulRoark.com