QTR-Quadtone RIP

I was following the instructions found in the mini-tutorial that is  
available in the files section of the group. No where does it (or I)  
say "curves with calibration=yes". I does say to set the calibration  
line in the curve descriptor file (line 10) to "YES", again with the  
assumption you would using the curve when printing the Ink Pattern  
Page. Legacy?
c

On Apr 9, 2008, at 1:24 PM, Roy Harrington wrote:

> I'm curious where you are reading about "curves with  
> calibration=yes". A very
> long time ago you need to make curves for calibration but that was  
> changed
> to just use the calib ink limit slider. It sets the ink limits for
> all the inks together.
> I thought I had all those old references removed.
>
> In any case once you decide on ink limits, you start making actual  
> curves and
> will no longer use the calib mode in printing.
>
> Roy
>
> On Wed, Apr 9, 2008 at 9:17 AM, crispycoffin  
> <chris@...> wrote:
> > Got a question regarding printing the Ink Pattern Page ala the
> > mini-tutorial offered in the files section.
> >
> > Quick hardware rundown: Mac OSX 10.4.11, MacBook Pro, Epson 2200,
> > Spyder3 Studio, Epson UC ink.
> >
> > I'm building some curves for Hahnemuhle photo rag and noticed, when
> > referring to the mini tutorial that one should first print the ink
> > pattern page using a curve in which you have set calibration to  
> "yes",
> > the default limit to 100, and deleted the linearize data line. When
> > I'm in the print dialog for QTR 2.6.1 I can select a curve, then
> > select Calibration for the mode. The curve appears to remain  
> selected
> > although grayed out.
> >
> > I print this, and, following the tutorial guidelines, define the
> > limits (in this case K=53%, LK=75%) and add those values to the  
> curve
> > file. I reinstall the curve, following the same printing procedure
> > (select the curve, then select the "Calibration" mode and print. The
> > two prints are identical. Now, does using the calibration mode mean
> > NOT using any curves (since the selection appears grayed out)? If  
> that
> > is the case than does that mean the mini tutorial is wrong or out of
> > date? The process would seem to make sense. You would want find the
> > ink limit. Print a new page with the limits curve and then find the
> > density for partitioning. This would not work if the curve is not
> > applied went printing the calibration page. Am I wrong?
> > Oh, and I'm not color managing the file. Everything else seems to be
> > as it should.
> > Thanks!
> > coffinphoto.com
> >
> >
> > ------------------------------------
> >
> > Yahoo! Groups Links
> >
> >
> >
> >
>
> 



Chris Coffin
http://coffinphoto.com
http://coffindesign.com




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