QTR-Quadtone RIP

I've generally gone off of Roy's curves using them as standards (they  
are very similar to each-other from printer to printer) (Warm/Cool/ 
Cool-Sepia/Sepia)  But then I've created Warm-Sepia and Neutral.  
Neutral is never that perfect, however, so I've always had to tone  
with either cool or warm (or both) to get the print looking good. So  
when I build QTR color curves I also like to create  
custom.presets.plist files�for OS X�(and of course Create ICC  
profiles) to go along with them. Because all the paper bases are so  
different I think it would be pretty hard to create specific LaB  
standards, but my goals have always been a visual approximation of  
either Roy's QTR AB values or Jon Cone's Neutral/WN/SL AB values.

Walker


On Feb 9, 2010, at 12:31 PM, tboleyyh wrote:

> Obviously there are some established conventions for making curve  
> sets and providing them to the community- Warm, sepia, etc etc...  
> and it's easy to see what inks were used to make each of these.
> I'm wondering if there have been any loose targets set to try to hit  
> with each one, to keep consistency amongst the available curves from  
> printer model to printer model...
> Anyone know, or is it purely approximate, visual..?
> I'd like to design some that suit my needs, and then make them  
> available if successful, and they might as will meet the established  
> conventions so they are most useful to other users.
> Thanks,
> Tyler
>



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