QTR-Quadtone RIP

> Yes. You compare LK with K and then compare LLK with LK and 
> the compute its relative blackness to K.

I've always compared each value to K and nothing else. Once I experimented
with wildly different values on each ink, and it didn't seem to hurt the
resulting curves as long as I did a linearization in the end. I'm not
recommending that of course, but it seems there's a large margin for error
here.
 
> fairly good dmax with this technique. However with my UT7 
> inks, and I think the UT2 will be similar, you will still get 
> bronzing on glossy paper.

I find the UT7 inks are as good as Epsons K3 inks with visible bronzing only
in the brightest highlights. I use gloss optimizer in the yellow position to
get rid of this.

The Epson Premium Semigloss curves on my site might be a good starting point
for new glossy curves. With the UT2 inkset I think you have to swap C and LC
for M and LM.

http://daniel.staver.no/home/files

--
Daniel Staver
http://daniel.staver.no