QTR-Quadtone RIP

--- In QuadtoneRIP@yahoogroups.com, "Daniel Staver" <daniel@...> 
wrote:
>Many thanks Daniel, I have gone out and bought some Ilford classic 
Pearl after Tom's comments about bronzing when using gloss  as I have 
to get it right this weekend but I will try modifying your curves for 
gloss latter as my printer prefers Kodak way better than Epson papers.
Thanks again
> > 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
>