QTR-Quadtone RIP

Thanks, Lou.

Anyone out there have thoughts on workflow for linearizing a Piezography inkset on Epson 
R1800 in a Mac environment? In looking back through past posts, some have suggested 
editing Printer/Paper specific .txt files in the Profiles folder and pasting in new 
linearization data, but I note that all the R1800 NK7 files are .quad files and it is not clear 
how to edit these in a similar way. 

Any Mac guidance on what to do with the files to get linearized curves in the QTR printer 
dialogue would be greatly appreciated!!

Thanks.

--- In QuadtoneRIP@yahoogroups.com, "Louis Dina" <lou@...> wrote:
>
> Scott,
> 
> I'm on a PC and con't help answer the Mac ralated questions.  ON my PC, 
> I create a profile in QTR (or start with an existing one and delete the 
> linearization data).  I use this UN-linearized profile to print a 21 
> step grayscale target, which I read with my spectro.  The density or L* 
> is loaded (automatically or manually) and makes adjustments to the 
> curve shapes to give me a nice smooth tone ramp.  So, the lin data is 
> just smoothing out the bumps to the unlinearized file.  
> 
> How you do that on a Mac is beyond me, but the result is the same.  And 
> since I am on a PC, I cannot print from Photoshop directly to QTR.  I 
> have to boot up QTR and print from the QTRgui interface.  
> 
> I do sometimes print the linearized 21 step grayscale again after the 
> profile is linearized and complete.  I create an ICC profile from the 
> linearized print, which I can then use for soft proofing (both tonality 
> and color) in Photoshop, but all printing must be done from QTR in the 
> PC environment.  The same profile will be used to print in QTR and if I 
> have done it all right, the tonality and color should match my PS soft 
> proof.  
> 
> Lou
> 
> --- In QuadtoneRIP@yahoogroups.com, "scott.romans" <scott.romans@> 
> wrote:
> >
> > Lou, when you linearize a file in the Windows environment, are you 
> ultimately creating a 
> > new profile and then soft-proofing AND Printing with this profile 
> (ie, selecting print "Proof" 
> > rather than "Document")? Or when you linearize do you end up with a 
> new curve 
> > associated with your specific paper that you can select in "curves" 
> field of the QTR 
> > dialogue box?
>