QTR-Quadtone RIP

Mel,
   Those numbers seem pretty reasonable.  When I plot them versus step number, they give a curve that is similar to those that Tom Moore describes as ideal.  It's possible, though, that you might be able to get a bit more density at the high end by adjusting the maximum ink levels from what I used in the GFS profiles.  This is the process that is described in the earlier section of Tom's guide, starting on page 11.  But, I'm not that much of a Dmax fanatic myself.

David

--- In QuadtoneRIP@yahoogroups.com, "Mel" <chilterns@...> wrote:
>
> Thanks for that David
> 
> Yes it is the Windows version of QTR
> 
> The "curve" is shown in Curve Creator when clicking on Show Curve.
> This shows both Linearization (a graph from 0, bottom left to 100 top right) and Ink Curves. It is the Linearization graph that is the one I mentioned.
> 
> If I enter the values as previous noted, into the Linearization Values panel (Figure 10 of Tom Moore's User Guide)then click Create Curve the result is a Linearization graph from 0, bottom left to 100, top right, of a more or less convex, bowed upward curve.
> 
> After printing out the 21step.tif of the resulting Linearization I noted the following result for QTR_1400_UT14_EPSG_cool (measured with the X-Rite 810).
> 
> 0.09*
> 0.12
> 0.17
> 0.22
> 0.27
> 0.32
> 0.37
> 0.45
> 0.52
> 0.55
> 0.63
> 0.72
> 0.81
> 0.91
> 1.01
> 1.10
> 1.20
> 1.34
> 1.47
> 1.60
> 1.78
> 
> *0.09 is also the X-Rite 810 standard on the plaque white spot for this Densitometer - in other words the standard "white" - corresponding to EPSG paper "white".
> 
> Do these figures seem OK ?   
>