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QTR profile for UC-2200 on Kirkland Glossy (was: Neutral profile goals)

2005-05-27 by John Moody

Lou, thanks for the tip, that was helpful.

I created one cool and one warm profile for Kirkland glossy, UC ink on a
2200.
With warm mixed 35% into the cool, the blue yellow transition is at Lab* 50,
and the red-green is within +/-0.5 of neutral up to Lab* 55, then peaks up
to +2.3 as it heads towards full black.  DMax is 2.23 before drying or
spraying.  I’m not sure what to do or make of the blue shift at 100% black.
I did not use any gray overlap in the cool profile; should I?
For my first somewhat serious attempt at a profile, I feel this is a good
start.

I would appreciate any comments or criticisms on the results, and
suggestions for moving forward.
LAB_L  LAB_A  LAB_B  Density
93.66    -0.59     -6.07     0.073
89.27    -0.34     -5.68     0.126
84.75    -0.14     -5.18     0.184
80.15    -0.04     -4.72     0.245
75.53    0.15      -4.04     0.309
71.05    0.19      -3.31     0.374
66.55    0.24      -2.70     0.443
62.07    0.28      -1.96     0.516
57.80    0.27      -1.37     0.589
53.29    0.29      -0.75     0.671
48.91    0.31      0.18      0.756
44.40    0.44      1.29      0.850
40.06    0.71      2.13      0.947
35.68    1.16      2.97      1.053
31.28    1.53      3.62      1.169
27.03    1.81      4.15      1.292
22.30    2.13      4.65      1.444
18.25    2.30      4.75      1.589
14.25    2.35      4.19      1.751
9.78      2.00      2.32      1.960
5.25      -0.54     -3.44     2.236

Martin,
I was going to put the profiles up for use and comments, in the files
section of the group, but it seems that we don’t have the ability to upload
files.

Best regards,
John Moody

-----Original Message-----
From: DigitalBlackandWhiteThePrint@yahoogroups.com
[mailto:DigitalBlackandWhiteThePrint@yahoogroups.com]On Behalf Of Louis Dina
Sent: Wednesday, May 25, 2005 10:19 PM
To: DigitalBlackandWhiteThePrint@yahoogroups.com
Subject: [Digital BW] Re: Neutral profile goals

John,

My approach is to let my "neutral" profiles favor the color of the
paper white somewhat.  So, for a bluish white paper, I will skew the
entire profile slightly to the cool side.  For warm papers, I skew them
slightly to the warm side.  These are not huge color moves, but subtle
moves.  As you approach paper white, you move toward its color and I
prefer to work with the paper, rather than having a profile that is
dead on neutral until it reaches paper white and shows a shift.  Others
may prefer a different approach, but this works for me.

Lou

--- In DigitalBlackandWhiteThePrint@yahoogroups.com, "John Moody"
<moodymz3@y...> wrote:
> When creating a neutral profile, how far into the highlights do you
try to
> "force" neutral against a paper with brighteners.
> I'm about to try making a QTR profile for my 2200 using Kirkland
glossy with
> UC ink, and was wondering if there was any general thoughts on this.
>
> John

Hi John,

I am using Kirkland Glossy / QTR and UC inks, without a colorimeter
I am having a hard time getting a neutral tone, is there any chance
that you would be willing to share the profile you create with the
group?

Regards

Martin


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