QTR-Quadtone RIP

--- In QuadtoneRIP@yahoogroups.com, Carl Schofield <list@...> wrote:
>
> Colin,
> 
> I haven't used Kayenta.  Is this an RC paper for PK ink?  If yes,  
> then a dmax of 1.72 seems very low.  Could you please post your qidf  
> file and tell us what your ink assignments are.
> 
> Carl
> 
Hi, Carl

Kayenta is a matt paper which I bought stocks of after reading Clayton
Jones article at http://www.cjcom.net/articles/digiprn5.htm .  It is
double sided and I intended it to replace EAM/EEM as a proofing paper
but grew to like it in its own right for its blacks with Eboni.  

I am using three Eboni bottles connected to the MK, PK and Y positions.

The best linearization I can get is with an ink limit slider set at –5
and gamma set at –2.  I started trying curve adjustment layers to
improve things.

The QIDF file contents, stripped of Paul's notes for brevity, are as
follows:

PRINTER=QuadR1800
CURVE_NAME=3MK-Start_Kayenta_Yellow
GRAPH_CURVE=YES
N_OF_INKS=8
DEFAULT_INK_LIMIT=100
BOOST_K=
LIMIT_MK=70
LIMIT_C=
LIMIT_M=
LIMIT_Y=70
LIMIT_R=
LIMIT_B=
LIMIT_PK=70
LIMIT_GL=
N_OF_GRAY_PARTS=0
GRAY_HIGHLIGHT=10
GRAY_SHADOW=10
GRAY_OVERLAP=
GRAY_GAMMA=1
GRAY_CURVE=
N_OF_TONER_PARTS=0
TONER_HIGHLIGHT=10
TONER_SHADOW=10
TONER_GAMMA=1
TONER_CURVE=
N_OF_TONER_2_PARTS=0
TONER_2_HIGHLIGHT=10
TONER_2_SHADOW=10
TONER_2_GAMMA=1
TONER_2_CURVE=
N_OF_UNUSED=5
UNUSED_INK_1=C
UNUSED_INK_2=M
UNUSED_INK_3=R
UNUSED_INK_4=B
UNUSED_INK_5=GL
CURVE_MK="0;0 25;2.9 50;4 75;7.5 80;9 85;11 90;14 95;23 100;40 ""
CURVE_Y="0;0 5;0 10;0 20;0 50;3 75;9 80;10.5 85;12 90;16 95;24 100;40 ""
CURVE_PK="0;0 10;0 50;3.5 75;8 80;10 85;13 90;17 95;25 100;40 ""
LINEARIZE="95.32 91.06 87.22 82.90 79.00 75.33 72.33 69.38 66.47 63.87
60.80 57.33 52.79 48.33 43.80 38.80 32.80 28.92 26.19 22.34 20.37 "

I am sorry to burden you, but am grateful for your help.


Colin