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QTR-Quadtone RIP

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Message

Curve Design Problem

2006-01-23 by Piet Weber

In message 1816 I reported on a problem that is still not resolved, regarding a weird print 
of the inkseparation file. This is one of the steps you'll go though while creating a new 
paper/ink curve. I have posted a scan of the inkseperation.psd print, you'll find it in the 
Photos folder. Below this message, I'll state the descriptor file that I created for this print. 
The print shows color wedges that are not like they should be. Please take a look and I 
hope you could come up with a usefull hint. I have created good profiles in the past, but 
now I am doing something wrong. 

This is what I do:

drop new curve desriptor file on 'curve drop box'
open inkseparation.psd without any assigning a colorprofile
print without colormanagement in print with preview
in QTR settings: select calibration mode and select the calibration quad file in curve 1

I use OSX.4 and the latest QTR version.

link to scanned print
http://ph.groups.yahoo.com/group/QuadtoneRIP/photos/view/82f2?b=1


#
#  quadtone curve descriptor file
#
#
# the printer name
# the curve name
#   no spaces or special characters, except - or _  (dash or underscore)
#
PRINTER=QUAD2100
CALIBRATION=YES
GRAPH_CURVE=NO

#
# number of inks must be 4, 6, or 7
# the ink limits are percentages
#   usually they are all the same but they can be individually set
#

N_OF_INKS=7
DEFAULT_INK_LIMIT=100

LIMIT_K=
BOOST_K=
LIMIT_C=
LIMIT_M=
LIMIT_Y=
LIMIT_LC=
LIMIT_LM=
LIMIT_LK=

#
#  Describe Usage of each Ink: K,C,M,Y,LC,LM,LK
#    All Inks of Printer must be listed
#

#
# Gray Partitioning Information
#

N_OF_GRAY_PARTS=2
GRAY_INK_1=K
GRAY_VAL_1=100

GRAY_INK_2=LK
GRAY_VAL_2=45

GRAY_INK_3=
GRAY_VAL_3=

GRAY_INK_4=
GRAY_VAL_4=

GRAY_INK_5=
GRAY_VAL_5=

GRAY_INK_6=
GRAY_VAL_6=

GRAY_INK_7=
GRAY_VAL_7=

GRAY_HIGHLIGHT=6
GRAY_SHADOW=8

GRAY_GAMMA=1
GRAY_CURVE=

#
# Toner Partition Information
#

N_OF_TONER_PARTS=0
TONER_INK_1=
TONER_VAL_1=
TONER_INK_2=
TONER_VAL_2=

TONER_HIGHLIGHT=2
TONER_SHADOW=2

TONER_GAMMA=1
TONER_CURVE=

#
# Unused Inks
#
N_OF_UNUSED=2
UNUSED_INK_1=C
UNUSED_INK_2=M
UNUSED_INK_3=
UNUSED_INK_4=

#
# the following is a special UltraChrome ink flag it copies the
# light-black curves to the light-cyan, light-magenta and yellow inks.
# this insures that the LC and LM inks are used to directly neutralize
# the color of the light-black.
# the color balance of inks is controlled by the LIMIT_... values above.
#
UC_NEUTRALIZER=YES
LINEARIZE=

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