QTR-Quadtone RIP

I share Jens's confusion. I am using a Piezography NK7 inkset in an Epson R1800, trying 
to get the best results with Arches Infinity paper. The darkest tones are pretty blocked up 
and I wanted to linearize a profile. I have printed and measured a 21 step-wedge test 
print. I have dropped this into Create_ICC_Profile, but do I simply use this profile when I 
print in order to open up the shadows? Or is there something I need to do to linearize this 
profile before I use it? I've looked for a recent post to give basic instructions and have 
found none, so a reference or any help would be greatly appreciated! Thanks!


--- In QuadtoneRIP@yahoogroups.com, "JensGerbitz" <jensgerbitz@...> wrote:
>
> Hi everyone,
> 
> I'm in the process of linearizing QTR curves per the Eye-One-
> ReadMe.pdf found in the QTR Eye-One folder.
> 
> So far I have been able to create a .txt file with a graph from a 
> scanned Step-21x4-random.tif printout (on HM PR 188), and then 
> creating the graph by dragging the .txt file onto QTR-Linearize-
> Data.exe.
> 
> However, I'm lost starting at the "Linearize a QuadToneRIP Curve" 
> section.  I understand what the goal of the process is, but I how do 
> I "...simply create the ink description file, doing the 
> partitioning."?  Is this done in the QTR Curve Creator under 
> the "Gray Curve" tab or under one of the Toner Curver tabs?  If so, 
> are the numbers given in the article for GRAY_SHADOW and 
> GRAY_HIGHLIGHT fields the ones I should use (8 & 6 respectively)?
> 
> How do I make the quad curve?  Is the Step-21-gray stepwedge created 
> from the new quad curve?
> 
> I figure these are enough question for the moment, appreaciate any 
> help!
> 
> Cheers,
> Jens
>