Digital BW, The Print

Looking at the file SL-SL-WN-out.txt, your most obvious problem is in 
the Lab 90-100 area where there are two reversals. There is also a 
reversal at 78-79 and several values are so close together that qtr may 
not be able to linearize.

I would suggest lowering your black ink limit and re-doing the 
calibration. I would also recommend using only 21 steps or 51 at most.

Howard

Walker Blackwell wrote:
> Hey everyone. I'm experimenting with a 101 patch setup in QTR and I'm creating a Piezotone 
> curve using K1, Selenium K2, Selenium K3, and WN K4.  Of course, this is throwing my "ab" 
> values off but L is still showing up fine. I'm wondering if there is a way to turn off color-
> valued linearization and just focus on L/density in QTR so I can actually linearize an 
> environment that has a split tone with more than just 21 patches. Even 21 patches is a hit-
> and-miss for large splits like this. 51 would be fine too. By looking at the L values, seems like 
> QTR is really only dealing with 51.
> 
> My TXT in and out files are at: http://www.blackpointeditions.com/files/print_environments/
> QuadToneRIP/tests/
> 
> take care, Walker Blackwell
> 
> 
> 
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