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QTR-Quadtone RIP

Index last updated: 2026-04-28 23:12 UTC

Message

Re: blocked blacks

2006-12-03 by Tom Moore

Hi Ron
--- In QuadtoneRIP@yahoogroups.com, Ronald Faris <shutterbug52@...> wrote:
>
> Hi Tom
> 
> I am using the sepia toned NK7 inkset--my curves are linearized using  
> printfix pro
> 
Well that renders most of my previous comments irrelevant. Here are a
few more suggestions:

In the past, I have compared my limits and other parameters (e.g.
black boost) with those of other curves for the same printer&ink/
different papers and same printer&paper/different ink to get an idea
if I'm in the right ball park. Although the Cone suppled K7 curves
don't have qidf files, you can get an idea by using the display curve
selection in QTRgui (right click in the Curve Selection box).

To create a greater slope near the shadow end of your curve before it
is linearized you can reduce the black limit and increase the black
boost. That pushes out the high ink load to the deeper shadows. Once
you linearize, however, the curve will be brought back to the the
"standard" form the so- called ideal curve. If that is not creating
enough shadow separation for you when you print, you can adjust the
Gamma and Shadow adjustments in QTRgui to increase the shadow separation.

> thanks
> ron
 Good luck
Tom Moore

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