QTR-Quadtone RIP

Paul

After the initial calibration and second calibration prints, I am getting a Dmax of 1.60 from the Black at 25% default ink limit., both C and M came in at 57% of that with Density of 1.25 (both are the same).  LC was 46% of C meaning 26% in the ink descriptor (at Density .80), if I've got this right and LM was 48% of M being 27% in the descriptor (Density .85).  Do the C and M percentages seem high?  

I'm really not sure how to set the Black Boost, when or why, or what numbers to use.

The cool descriptor including linearisation is;

# Ink positions:
# Black: Ebony black
# Magenta: Warm photo black
# Light Magenta: Dilute warm photo black
# Cyan: Cool photo black
# Light Cyan: Dilute cool photo black
# Yellow: Gloss optimizer ("GLOP")

GRAPH_CURVE=YES
N_OF_INKS=6
DEFAULT_INK_LIMIT=25
BOOST_K= 
LIMIT_K=
LIMIT_C=
LIMIT_M=
LIMIT_Y=
LIMIT_LC=
LIMIT_LM=

N_OF_GRAY_PARTS=3
GRAY_INK_1=K
GRAY_VAL_1=100
GRAY_INK_2=C
GRAY_VAL_2=57
GRAY_INK_3=LC
GRAY_VAL_3=26

GRAY_HIGHLIGHT=10
GRAY_SHADOW=10
GRAY_OVERLAP=
GRAY_GAMMA=1
GRAY_CURVE=

N_OF_TONER_PARTS=0
N_OF_TONER_2_PARTS=0

N_OF_UNUSED=3
UNUSED_INK_2=M
UNUSED_INK_3=LM
UNUSED_INK_4=Y

LINEARIZE="0.01 0.04 0.09 0.14 0.19 0.25 0.30 0.35 0.43 0.53 0.62 0.71 0.79 0.86 0.92 0.98 1.10 1.23 1.33 1.39 1.60"

thanks

Ross

--- In QuadtoneRIP@yahoogroups.com, Paul Roark <roark.paul@...> wrote:
>
> If you are using QTR, be sure the C or M ink limit is set low enough that
> it's maximum density at its ink limit is well below the dmax of the MK.
>  You might also want to use the Black Boost for the last 10% of the MK ink
> curve.  When you use the Boost, the second calibration print is done at the
> K ink limit, not the Boost setting.
> 
> Paul
> www.PaulRoark.com