[argyllcms] Black generation and black ink limiting

  • From: Fabrizio Levati <fabrizio.levati@xxxxxxxxxxxxxx>
  • To: argyllcms@xxxxxxxxxxxxx
  • Date: Mon, 29 Mar 2010 21:17:41 +0200

Hello there,
after successfully using collink to create very good device link profiles I 
decided to start experimenting a bit with colprof.
I have been able to find my way through the tricky -kp black shape definition 
but there is something I am not able to understand regarding black ink limiting.
Using always the same source data and -kp parameters and then adding a -L92, I 
end up with roller coaster shaped curves as shown in the attached pictures. 
Even if we are in the "far black" region I'm not so sure this kind of curve 
won't have any consequence on the resulting separations.
Graeme told me, during the FOGRA symposium, that maybe Argyll is not the best 
choice if you need very smooth curves but actually, the smoothness is 
acceptable if you don't use any black ink limit...

What am I doing wrong?


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