QTR-Quadtone RIP

Thanks Howard

The more I know, it seems the more I don't know.

What I actually meant was: can you see a significant difference in prints?

However my question now is:  how do you use such curves?  It wasn't
clear from your URL.  Is there a guide somewhere?  I can work it out
up to a point.  I can see where to load the curves into the Curve
Creator.  

I guess the question is:  where to go from there?  Is it much the same
as normal - i.e. setting the overall limit, partitioning the inks,
checking if black boost is needed, linearising and creating a profile?
 Should I be setting ink specific limits?  What about "Grey Curve",
"Toner Curve 1", "Toner Curve 2"?  Are there safe values that I could
use here?

Thanks for sharing this with me.  Any further tips would be appreciated.

Ferdinand


--- In QuadtoneRIP@yahoogroups.com, Howard Shaw <glassman@...> wrote:
>
> Ferdinand
> 
> If you're asking about 'numerical' characteristics, inks in the Cone 
> curves overlap a lot more than in the QTR generated ones. The 
> auto-generation method that QTR uses means that you cannot have more 
> than three inks overlapping at once. With a quadtone this works fine
but 
> when there are 7 inks this method is limiting.
> 
> You should be the judge as to whether you prefer the end results.
> 
> If you are looking for a way to make Cone-style curves with QTR I
posted 
> details of a method here:
> 
> http://www.howardshaw.org/docs/k7-qtr/k7curves.htm
> 
> You could also use the point list table available in qtr instead of the 
> .acv files to generate similar curves.
> 
> regards
> Howard
> --
> www.howardshaw.org
> 
> ferdinand_paris wrote:
>  > Has anyone bothered to compare the 2880 .quad K7 curves that Jon Cone
>  > supplies for a number of paper & printer combinations, with curves
>  > produced by the QTR curves creation tool?  Jon claims that his
produce
>  > the ultimate smoothness.  Certainly his procedure for making the
>  > curves sounds pretty exhausting.  My question is, how much difference
>  > does it make in practice?
>  >
>  > Ferdinand
>  >
>