QTR-Quadtone RIP

Measure the density of the patches in the K strip and you should find 
that beyond a certain point (perhaps around 50% for the 7600) the 
density values level off or only slightly increase.  Choose the patch 
at the point where the density curve starts to flatten.

On Apr 25, 2005, at 8:18 AM, NiteFrog wrote:

>
>
> How do you know what you fist value is suppose to be?
>
> I read the turtorial and it wasnt very helpful.
>
> For example;
>
> QUOTE
> Figure 1 is an example of the ink test on an Epson 2200 with Epson
> UltraChrome inks. With a loupe or a densitometer you look for a patch
>   where it appears that all the paper is covered with ink. In this
> particular case it is at about 85% on each ink. There is a very
> gradual increase in density after this level but when adding inks
> together we don't want to overload too much. For this example I picked
> 85% for the basic ink limit.
> END
>
> I have a densitometer and waht value am I lookign for in the initial
> run?  How do you tell when the paper is covered in ink???
>
> This is confusing.
>
> Thank you,
>
> Kev
>
>
> --- In QuadtoneRIP@yahoogroups.com, Carl Schofield <scho@m...> wrote:
>> Looks like your ink limits are too high.  I think the default limit 
>> for
>> the 7600 should be about 50 and the light ink limits correspondingly
>> lower.  Also, in your linearization line the dmax 3.50 is 
>> extraordinary
>> (2.5 would be more likely).
>>
>> On Apr 25, 2005, at 6:08 AM, NiteFrog wrote:
>>
>>>
>>>
>>> Ok,
>>>
>>> I am on a PC and I just DL the newest version.  When I went to the
>>> turtorial to read how to create a profile for the paper I am using 
>>> and
>>> ink ( Epson Luster and UC inks ) the PDF file does not have all the
>>> info in it and cuts out at page 17 but the header list the appendix
>>> and etc up to page 32 that explains all the settings for the file you
>>> configure and what each items means.  At leat I assume.
>>>
>>> Where can I find a complete document.
>>>
>>> Also when I try to create the profile it lays out so much ink it is
>>> crazy, just gobs of it on the paper.  I have never had this problem
>>> before.  Please advise.
>>>
>>> The LINEARIZE was created using a densitometer.  If anyone can help
>>> that woudl be awesome.  The 21 step wedge with this is comignout
>>> magenta big time.
>>>
>>> Before I set yellow to 0 it was horrible adn again globs of ink on 
>>> the
>>> paper.
>>>
>>> I also have no idea what this means either as the documentation does
>>> not explain it so I jsut put in some numbers that the doc say it was
>>> neutral,
>>>
>>> GRAY_HIGHLIGHT=4
>>> GRAY_SHADOW=8
>>> #GRAY_OVERLAP=10
>>>
>>> Here is my file;
>>>
>>> PRINTER=Quad7600
>>> CURVE_NAME=7600-luster
>>> GRAPH_CURVE=YES
>>> N_OF_INKS=7
>>> DEFAULT_INK_LIMIT=80
>>> BOOST_K=100
>>> LIMIT_K=
>>> LIMIT_C=
>>> LIMIT_M=
>>> LIMIT_Y=0
>>> LIMIT_LK=30
>>> LIMIT_LC=30
>>> LIMIT_LM=70
>>>
>>> N_OF_GRAY_PARTS=2
>>> GRAY_INK_1=K
>>> GRAY_VAL_1=100
>>>
>>> GRAY_INK_2=LK
>>> GRAY_VAL_2=37
>>>
>>> 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=4
>>> GRAY_SHADOW=8
>>> #GRAY_OVERLAP=10
>>>
>>> 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=
>>> TONER_SHADOW=
>>> TONER_GAMMA=
>>> TONER_CURVE=
>>>
>>> N_OF_UNUSED=2
>>> UNUSED_INK_1=C
>>> UNUSED_INK_2=M
>>> UNUSED_INK_3=	
>>> UNUSED_INK_4=
>>>
>>>
>>> UC_NEUTRALIZER=YES
>>>
>>> LINEARIZE="0.0 0.02 0.06 0.10 0.14 0.20 0.24 0.29 0.33 0.38 0.44 0.48
>>> 0.53 0.64 0.78 0.98 1.17 1.45 1.78 2.37 3.50 "
>>>
>>>
>>> Thanks,
>>>
>>> Kev