QTR-Quadtone RIP

Hi Kemal.

Try lowering the black boost to less than 100%. Move it down
incrementally (say  to 75% or 50%) and see if it doesn't improve the
d'max somewhat. If you are truly flooding the 100% patch it can impact
drastically on density, actualy lowering it.

Regards
Duane



--- In QuadtoneRIP@yahoogroups.com, Kemal Delic <kemdel2000@...> wrote:
>
> Hello,
> 
> I need some guidance to improve my QTR curve creation.
> I succeeded in making a nice, neutral tone, 21-step
> tablet. I used K6 qidf file for the 7500 printer which
> I changed to fit my R220 printer and inks.
> 
> Here are my MIS UT1 ink setup in the Curve Creator
> with lot of guessing:
> 
> Printing Model - Quad 1200
> Default Ink Limit - 70,  Black Boost  -  100
> 
> Ink Setup:
> 
> No Ink Limits
> 
> K - Gray Ink  - 100
> C - Gray Ink  -  47
> M - Toner     -  6,6   Blue
> Y - Gray Ink  -  14
> LC- Gray Ink  -  32
> LM- Toner2    -  3,4  Light blue
> 
> Gray Curve:     10   10   Gamma 1
> Toner Curve:    10   10   Gamma 1
> Toner Curve2:   10   10   Gamma 1   
> 
> After the linearizing, I printed the final step
> tablet.  The  tablet was flooded with the ink in the
> 100% area, it is neutral in tone, very even gradient.
> Really, I am very proud that I, as a beginner, could
> accomplish something like that. 50% density is 0,61,
> but 100% is only 1,57. I don't like that, because,
> when I printed through the QTR without the curve, I
> got Dmax 1.68 on the same paper. I guess the toners
> are diluting the ink in the 100% area. Your help here
> would be very appreciated. 
> 
> Best regards,
> Kemal
>