QTR-Quadtone RIP

It sounds like  you've set the ink limit too high.

First, be sure that the ink limit is (at most) set to what I call the left
edge of the plateau.  As the K density rises, it wii hit a plateau where it
will see-saw for a while.  You want to stay off that plateau.

Second, you might try setting the ink limit to the last K step where you
actually can visually see a density increase.  Then have the black boost
carry the K to a higher point if your scanner or spectro measures a deeper
black beyond that point.

I would concentrate on getting these initial settings correct and not alter
the defaults in the middle tabs.

Paul
www.PaulRoark.com

On Thu, May 2, 2013 at 6:44 AM, Greg <gregnixon@...> wrote:

> **
>
>
> I am having some difficulty setting up a new profile.
>
> I print the ink limit page to characterise the inks. I then print the ink
> separation page with the limit slider set to where the ink saturates the
> page, in this case 85%. I look at the figures and measure and set the
> crossover points. I use the GUI to fill the figures into the curve creation
> page.
> Then I print the 21 step wedge, that prints ok, but the densities at the
> 70%-100% end are all cramped up with very little difference between them. I
> use Photoshop and the step wedge script to read the 21 step values. I copy
> and paste these L* values into the linearization boxes in the GUI.
> At this point the procedure fails with a message saying that the steps are
> not in order. They are in order but there is very little difference between
> the steps at the black end. I think the closeness of the steps is the
> problem.
>
> Is there a method to reduce the densities at the black end. Highlight,
> shadow, gamma, etc so I can linearise the curve?
>
> Cheers
> Greg Nixon
>
>  
>


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