QTR-Quadtone RIP

>  If all the inks are in identical curves, each channel may be using the same dither pattern, accentuating whatever pattern is there.


This talks to me so much, I've been fighting patterns for years.
May I quote a discussion about making negatives, dithering, etc..I had with Roy early last year; he said:
 "Each ink has a different dithering placement of drops.  So it's best to have both more individual ink and more different inks for more hiding of the drops."
This is rather comforting about any pattern accentuation, each channel is not supposed to use the same pattern.
But making the curves "not totally congruent" may be safer anyway.
Different ink limits for each channel could maybe also help in that direction, and also attenuate the larger dots transition, if some is actually taking place?


>  It appears that an ordered, non-random dither pattern is or can be made to look smoother than an actual random pattern,...


I'm a bit confused about that.
I have also been told that inkjet dithering is not truly random - or mathematically random.
Paul, do you refer to the dither options in the printing box, under Advenced Adjustments?


About "random" patterns, I also wonder if anyone has experienced Icefields FM haltoning, or any other similar software, in combination with QTR, if that is possible?
I made some tries around 2010 before I knew about QTR, and might want to dive back into it now.




Stefan Christiansen