QTR-Quadtone RIP

--- In QuadtoneRIP@yahoogroups.com, "smack0606" <smack0606@...> wrote:
>
> Hi everybody,
> 
> I have built some curves for the EEM yesterday (based on the curves 
> supplied by Roy) and noticed that the original R800 curves do not use 
> Photoblack. However in the printed Testchart photoblack is clearly 
> lighter that Matte black so that I just tried to use photblack as a 
> Lightblack. The results seem to be quite good. With the new 
> linearized curve (including photoblack) I do not have anymore banding 
> problems and the print is smooth and not as dotty as when using the 
> original curve. I seem to get much smoother transitions than before. 
> Tonewise I had to add a little more Magenta to neutralize a greenish 
> tone which Photoblack seems to have.
> 
> However the last tests have done resulted in a slightly contrasty and 
> light (otherwise good) print. Can I change the shadows / highlights 
> or Gamma for the black ink after having linearized or will I have to 
> linearize all over again after having changed shadows and highlight?
> 
> If anyone is interested I could upload my cold and warm curve.
> 
> Regards,
> 
> Ignacio
>
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Hi Ignacio

I am french,please excuse me for my quite poor english.

I just try QTR whith an R800.
My results are quite good,but I wish to test your profile
Mine is as follow:
Starting with the UC-EEnhMatte-cool and keeping the linearization
curve of it,I change the values in the Curve Creator like that:
-Defaut ink limit 75
-Gray ink   density 100
-Blue ink   density 10    Limit 10
-Photo Black  density 30  Limit 30

Regards

Jean-Claude