i d e a l l i a n c e a t p r i n t 1 3 – b o o t h # 4 8 7 7 letters to the color maven(s) do you...
TRANSCRIPT
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I D E A l l i a n c e a t P R I N T 1 3 – B o o t h # 4 8 7 7
I D E A l l i a n c e a t P R I N T 1 3 – B o o t h # 4 8 7 7
Letters to the Color Maven(s)
Do you see what I see?
Can you print what I see?
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I D E A l l i a n c e a t P R I N T 1 3 – B o o t h # 4 8 7 7
Today’s panel of mavens (in alphabetical order)
Bob Hallam, PIXELOLOGIE, Inc
Don Hutcheson, HutchColor, LLC
William Li, Eastman Kodak
Danny Rich, Sun Chemical Corp
John Seymour, QuadTech
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I D E A l l i a n c e a t P R I N T 1 3 – B o o t h # 4 8 7 7
I D E A l l i a n c e a t P R I N T 1 3 – B o o t h # 4 8 7 7
Part 1 - Do you see what I see?
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I D E A l l i a n c e a t P R I N T 1 3 – B o o t h # 4 8 7 7
Dear Color Maven,
Help me out here… my dress, you know, that long
flowy one that I wore to the Academy Awards? What
is the correct name of the color? Fuchsia, tyrian
purple, magenta, maroon? Maybe fascinating?
Puce? Dark pink? Dusty Rose? Vermillion? My
agent and I are having no end of arguments about
the name of the color.
Famous Actress
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I D E A l l i a n c e a t P R I N T 1 3 – B o o t h # 4 8 7 7
Dear Famous Actress
Color names are ambiguous
Just buy a spectrophotometer and measure the darn dress
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I D E A l l i a n c e a t P R I N T 1 3 – B o o t h # 4 8 7 7
Naming or Specifying Colors
ISCC / NBS Method of Color Naming
Based on the Munsell Color Order System (Hue, Chroma, Value)
Similar in structure to CIELAB (Hue, Chroma, Lightness)
9B to 5PBC 10 to 12V 6 to 9Center at:2.5 PB 7.5/11
L* = 76.5a* = -6.7b* = -46.1C* = 46.6hab = 262°
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I D E A l l i a n c e a t P R I N T 1 3 – B o o t h # 4 8 7 7
Dear Color Maven,
Do you agree using RHEM indicators on digital
proofs for customer approval is a good idea?
How do you respond to those smaller, less
technical customers (mom & pop) who are
unable or unwilling to purchase a light booth?
Breaking Brad
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I D E A l l i a n c e a t P R I N T 1 3 – B o o t h # 4 8 7 7
Dear Breaking Brad,
Key phrase: “If stripes are seen, light not 5000K”
Does not mean “If stripes are not seen, light is 5000K”
If you turn off the lights you won’t see stripes, but the light is
definitely not 5000K!
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I D E A l l i a n c e a t P R I N T 1 3 – B o o t h # 4 8 7 7
Dear Color Maven,
I was painting my toenails a lovely lavender to
match the cover of the latest GLAMOUR
magazine, but when I went outside the next day
the color was all-wrong and I had to redo
them!!! It was soooooooo annoying! Why does
this always happen to me?
Angry in Albuquerque
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I D E A l l i a n c e a t P R I N T 1 3 – B o o t h # 4 8 7 7
Dear Color Maven,
Room lighting Outdoor lighting
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I D E A l l i a n c e a t P R I N T 1 3 – B o o t h # 4 8 7 7
Dear Angry in Albuquerque,
It’s all about metamerism
Colors change under different lighting
Two colors might match under one lighting, but not under
another
Lavender is kind of a tough color for metamerism
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I D E A l l i a n c e a t P R I N T 1 3 – B o o t h # 4 8 7 7
Incandescent2300 K Source
Fluorescent
Daylight
4000 K Source
5000 K Source
Metamerism – Friend or Foe?
400 450 500 550 600 650 700
Wavelength (nm)
0
5
10
15
20
25
30
%R
efle
ctan
ce F
acto
r
StandardBatchABatchB
Metameric Matches
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I D E A l l i a n c e a t P R I N T 1 3 – B o o t h # 4 8 7 7
Fluorescent Lamp Light4100 K Source
Mono-PhosphorOffice Lighting
Tri-PhosphorStore Lighting
Metamerism – More than Meets the Eye
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I D E A l l i a n c e a t P R I N T 1 3 – B o o t h # 4 8 7 7
D50
The only ‘legal’ way to view
color
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I D E A l l i a n c e a t P R I N T 1 3 – B o o t h # 4 8 7 7
Same Proof Under Different Lighting…
PressroomPressroomSupermarketSupermarket OfficeOffice
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I D E A l l i a n c e a t P R I N T 1 3 – B o o t h # 4 8 7 7
More Examples
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I D E A l l i a n c e a t P R I N T 1 3 – B o o t h # 4 8 7 7
Metamerism in 2012 DEER Poster Series
Frog image copyright © National Geographic
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I D E A l l i a n c e a t P R I N T 1 3 – B o o t h # 4 8 7 7
Is it Really D50?
Standard D50 spectrumTypical D50 booth
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I D E A l l i a n c e a t P R I N T 1 3 – B o o t h # 4 8 7 7
Dear Color Maven,
Every time I go on a press ok, and I see a guy
running color, I cringe. I mean – most guys are
colorblind, right?
Fed up With Bad Color
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I D E A l l i a n c e a t P R I N T 1 3 – B o o t h # 4 8 7 7
Dear Fed up with Bad Color,
Yes, there are more color deficient men than women
No, not all men are not colorblind
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I D E A l l i a n c e a t P R I N T 1 3 – B o o t h # 4 8 7 7
Global Incidence of Red-Green Color Deficiency
Ethnic Group Males Females
Europeans 8% 0.5%
Asians 4% 0.6%
Africans 2.6% 0.5%
Australian Aborigines 2.0% 0.03%
American Indians 1.9% 0.6%
South Pacific Islanders 0.8% 0.0%
The X chromosome carries the genes for Red and Green photosensors. Men have one X chromosome and women have two, so a defective genetic sequence is more likely in males. On the other hand some evidence has been reported that defective genetic sequences in women can occur in one X chromosome but not in the other producing tetrachromatic vision in maybe 6% (estimated) of women.
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I D E A l l i a n c e a t P R I N T 1 3 – B o o t h # 4 8 7 7
Genetics and Variations in Normal Color Vision
Neitz, J., & Neitz, M. The genetics of normal and defective color vision. Vision Research (2011), doi:10.1016/j.visres.2010.12.002
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I D E A l l i a n c e a t P R I N T 1 3 – B o o t h # 4 8 7 7
Small Field Tritanopia
The distribution of L, M, S cones is not uniform
Nor is the size or density of cones
Tritanopia is the name for having no S cone response
Lightness and Spatial discrimination is highest on optical axis
No S cones on the optical axis
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I D E A l l i a n c e a t P R I N T 1 3 – B o o t h # 4 8 7 7
Color Tests
Ishihara Farnsworth-Munsell 100 Hue
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I D E A l l i a n c e a t P R I N T 1 3 – B o o t h # 4 8 7 7
Original Deuteranopia Simulation
Simulation of Color Deficiency
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I D E A l l i a n c e a t P R I N T 1 3 – B o o t h # 4 8 7 7
Simulation of Color Deficiency
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I D E A l l i a n c e a t P R I N T 1 3 – B o o t h # 4 8 7 7
Simulation of Color Deficiency
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I D E A l l i a n c e a t P R I N T 1 3 – B o o t h # 4 8 7 7
Reverse Color Blindness
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I D E A l l i a n c e a t P R I N T 1 3 – B o o t h # 4 8 7 7
Dear Color Maven,
I read somewhere that color vision gets worse
as we age. Should I be looking to get rid of all
my senior color folks?
Ageist in Amarillo
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I D E A l l i a n c e a t P R I N T 1 3 – B o o t h # 4 8 7 7
Dear Ageist in Amarillo,
As we age, the lens in our eye yellows
Somehow we compensate… but not completely
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I D E A l l i a n c e a t P R I N T 1 3 – B o o t h # 4 8 7 7
Spectral Absorption of Light
Before the Retina
Crystalline Lens Degrades with
time and the absorption of short
wavelengths increases
This is a pigment across the
retina known as the macula
This is a brownish - yellow cloud in
front of the retina
Explanation of color change with age
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I D E A l l i a n c e a t P R I N T 1 3 – B o o t h # 4 8 7 7
Figure 4. Comparison between the lower (< 30 y.o.a.) and the upper age group (> 60 y.o.a).
Wuerger S (2013) Colour Constancy Across the Life Span: Evidence for Compensatory Mechanisms. PLoS ONE 8(5): e63921. doi:10.1371/journal.pone.0063921http://www.plosone.org/article/info:doi/10.1371/journal.pone.0063921
Evidence of partial accommodation
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I D E A l l i a n c e a t P R I N T 1 3 – B o o t h # 4 8 7 7
Dear Color Maven,
I don’t really have to think about people with
color deficiency when I design, do I?
I mean, it’s just too hard to figure out what
someone would see, anyway. Right?
Color sufficient and proud
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I D E A l l i a n c e a t P R I N T 1 3 – B o o t h # 4 8 7 7
Dear Color Sufficient and Proud,
Yes you do, and no it isn’t
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I D E A l l i a n c e a t P R I N T 1 3 – B o o t h # 4 8 7 7
Original RGB image
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I D E A l l i a n c e a t P R I N T 1 3 – B o o t h # 4 8 7 7
Photoshop Deuteranopia Simulation (Proof Setup)
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I D E A l l i a n c e a t P R I N T 1 3 – B o o t h # 4 8 7 7
Dear Color Maven,
I heard your response to the question about color
blindness, excuse me, color deficiency in men. I
passed the Ishahara test, so I must belong to the 90%
of men who are not color deficient.
Still, I just don’t seem to be as sensitive to color
differences as my wife. Why is that?
Just call me insensitive
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I D E A l l i a n c e a t P R I N T 1 3 – B o o t h # 4 8 7 7
Dear Just Call Me Insensitive,
Men who are not color deficient are still less color conscious
than women
Likely a “nurture” issue rather than “nature”
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I D E A l l i a n c e a t P R I N T 1 3 – B o o t h # 4 8 7 7
Fun Factoid
9 out of 10 men agreed that the right answer to their wife is
“Yes Dear”.
The 10th man has not been heard from since.
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I D E A l l i a n c e a t P R I N T 1 3 – B o o t h # 4 8 7 7
Color recall test
50 students in an algebra class at UW Milwaukee
Half male, half female
Two minutes to recall single-word color names
Average number for men: 15
Average number for women: 18
Small, but statistically significant difference
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I D E A l l i a n c e a t P R I N T 1 3 – B o o t h # 4 8 7 7
I D E A l l i a n c e a t P R I N T 1 3 – B o o t h # 4 8 7 7
Part 2 - Can you print what I see?
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I D E A l l i a n c e a t P R I N T 1 3 – B o o t h # 4 8 7 7
Dear Color Maven,
In my prepress department, we can’t afford
those expensive lighting booths, so one of
our guys went to Home Depot for some
plywood and spray paint. What wattage
light bulbs should he be buying?
Hardware Hank
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I D E A l l i a n c e a t P R I N T 1 3 – B o o t h # 4 8 7 7
Dear Hardware Hank,
Don’t try this at home!
Compare the cost of a booth to the cost of losing a big account
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I D E A l l i a n c e a t P R I N T 1 3 – B o o t h # 4 8 7 7
Avoid Ambient Lighting
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I D E A l l i a n c e a t P R I N T 1 3 – B o o t h # 4 8 7 7
Avoid Ambient Lighting
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I D E A l l i a n c e a t P R I N T 1 3 – B o o t h # 4 8 7 7
Avoid Ambient Lighting
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I D E A l l i a n c e a t P R I N T 1 3 – B o o t h # 4 8 7 7
Widely Disparate 5000 Kelvin Lamp Lights
D50 Sources
0
100
200
300
400
500
600
700
800
300 350 400 450 500 550 600 650 700 750 800
Wavelength [nm]
Rel
ativ
e P
ower
- F
luor
esce
nt L
amp
s
0
20
40
60
80
100
120
Rel
ativ
e P
ower
- F
ilter
ed L
amps
SPX50 FL-D50a TL950 FL-D50b FL-D50c TH-D50 CIE D50
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I D E A l l i a n c e a t P R I N T 1 3 – B o o t h # 4 8 7 7
Discussion of Fluorescence Effects
Halftone and dithered prints are affected more by FWA than solid
patches.
Transparent / translucent inks are affected more by FWA than strongly
absorbing inks.
U V B lue R e d
P ap e r w ith F W A
M ag e nta D ot
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I D E A l l i a n c e a t P R I N T 1 3 – B o o t h # 4 8 7 7
Fluorescence in Reproduction
400 450 500 550 600 650 700 750Wavelength (nm)
-1
4
9
14
19
24
29
To
tal R
ad
ian
ce F
act
or
Diff
ere
nce
(%
)
Apco II/IIPhotocopy Matte PhotopaperColor-matching Card
ISO Brightness 108
ISO Brightness 87
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I D E A l l i a n c e a t P R I N T 1 3 – B o o t h # 4 8 7 7
Impact of Fluorescence on Color Reproduction
CYAN DL* Da* Db* DC* DE*ab Apco II/II 0.28 0.21 0.32 -0.37 0.22 3NT-3 0.05 0.09 -0.06 -0.01 0.02 Photocopy 1.08 -0.02 0.51 -0.44 1.43
Premium Photo 0.17 2.11 -1.93 0.92 8.21 MAGENTA DL* Da* Db* DC* DE*ab Apco II/II -0.02 0.10 -0.02 0.10 0.01 3NT-3 0.16 -0.19 -0.20 -0.23 0.10 Photocopy 0.10 0.30 -0.45 0.14 0.30 Premium Photo 0.20 0.77 -3.09 -0.24 10.17
YELLOW DL* Da* Db* DC* DE*ab Apco II/II 0.01 -0.02 -0.08 -0.08 0.01 3NT-3 -0.06 0.05 0.04 0.03 0.01 Photocopy 0.03 -0.10 -0.73 -0.73 0.54 Premium Photo 0.16 -0.14 -1.78 -1.78 3.21
BLACK DL* Da* Db* DC* DE*ab Apco II/II 0.41 0.01 0.01 0.01 0.17 3NT-3 0.03 0.03 -0.02 -0.01 0.00 Photocopy 0.16 0.05 -0.10 -0.09 0.04 Premium Photo -0.05 0.51 -1.14 -0.91 1.56
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I D E A l l i a n c e a t P R I N T 1 3 – B o o t h # 4 8 7 7
More about viewing booths later today!
Today, 2:00 – 2:45Instruments & Lighting: M0, M1, M2 & M3. What you don't know can hurt you.
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I D E A l l i a n c e a t P R I N T 1 3 – B o o t h # 4 8 7 7
Dear Color Maven,
Please help me figure out the punch line to this
joke. An ad agency exec, a prepress technician,
and a printer walked into a color booth…
Shirley you must be joking
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I D E A l l i a n c e a t P R I N T 1 3 – B o o t h # 4 8 7 7
Dear Shirley You Must be Joking,
Stop calling me Shirley!
We have identified perceptual differences due to
Color deficiency, age, fatigue, medications, tinted glasses
Lighting, metamerism, surround
There are also perceptual differences due to context
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I D E A l l i a n c e a t P R I N T 1 3 – B o o t h # 4 8 7 7
What’s Your Focus?
Merino Cardigan
$59.99
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I D E A l l i a n c e a t P R I N T 1 3 – B o o t h # 4 8 7 7
What’s Your Focus?
Switch to a
Healthy-
Looking Hair
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I D E A l l i a n c e a t P R I N T 1 3 – B o o t h # 4 8 7 7
What’s Your Focus?
Look forward to
working with
BIG
COMPANY
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I D E A l l i a n c e a t P R I N T 1 3 – B o o t h # 4 8 7 7
Dear Color Maven,
I was on a press approval and I just got back
into my office with the press sheets and what I
saw on press doesn't look the same here in my
office. Help, I might get fired! What should I
do??
Desperate in Des Moines
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I D E A l l i a n c e a t P R I N T 1 3 – B o o t h # 4 8 7 7
Dear Desperate in Des Moines,
If only you would have been listening
when Danny talked about metamerism!
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I D E A l l i a n c e a t P R I N T 1 3 – B o o t h # 4 8 7 7
Dear Color Maven,
I print for a high-end cosmetics company. They provide me with files and
proofs to the GRACoL print aim. The Purchase Order requests me to print
on an SBS stock that clearly does not meet the GRACoL paper specification.
How can I print on SBS that will simulate the GRACoL file?
How can I proof back to the customer what my printing will look like on the
SBS?
How can I get my customer to understand that what I print will not simulate
what they sent me?
Beauty in the Proof
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I D E A l l i a n c e a t P R I N T 1 3 – B o o t h # 4 8 7 7
Dear Beauty in the Proof,
All is not lost
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I D E A l l i a n c e a t P R I N T 1 3 – B o o t h # 4 8 7 7
Dear Beauty in the Proof,
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I D E A l l i a n c e a t P R I N T 1 3 – B o o t h # 4 8 7 7
Dear Beauty in the Proof,
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I D E A l l i a n c e a t P R I N T 1 3 – B o o t h # 4 8 7 7
Dear Beauty in the Proof,
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I D E A l l i a n c e a t P R I N T 1 3 – B o o t h # 4 8 7 7
Dear Color Maven,
One of my client’s art director is causing me
sleepless nights, he is always complaining that
everything we do for him is too red. I'm at my
wits end trying to educate him on what we do to
make sure the proofs and prints are reproduced
accurately – all to no avail. Any words of
wisdom?
Sleepless in Seattle
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I D E A l l i a n c e a t P R I N T 1 3 – B o o t h # 4 8 7 7
Dear Sleepless in Seattle,
What’s wrong with this picture of the art director?
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I D E A l l i a n c e a t P R I N T 1 3 – B o o t h # 4 8 7 7
Dear Color Maven,
We have our first Job being printed by multiple plants across multiple
companies. We have one source making good standard proofs and
everyone will be printing on the same stock.
Can we expect that each press operator will see the same color in our
proofs?
Is it reasonable to expect that we will receive a close simulation of our
proof from all these plants?
Confused in Connecticut
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I D E A l l i a n c e a t P R I N T 1 3 – B o o t h # 4 8 7 7
Dear Confused in Connecticut,
No, you can’t expect everyone to see color the same
But…
It is reasonable to expect that proper Color Management will
give you a close simulation
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I D E A l l i a n c e a t P R I N T 1 3 – B o o t h # 4 8 7 7
I D E A l l i a n c e a t P R I N T 1 3 – B o o t h # 4 8 7 7
Your Color Mavens for the day
Bob Hallam, PIXELOLOGIE, Inc
Don Hutcheson, HutchColor, LLC
William Li, Eastman Kodak
Danny Rich, Sun Chemical Corp
John Seymour, QuadTech