At 10:20 21-3-2005 +0000, Paul Sherfield wrote:
Yes, a point on the Pantone
involvement in ISO 12647/2? When are Pantone
going to publish a Solid to Process guide that reflects the ISO
standard
printing conditions for, say, type 1 and 2 papers. The current
Pantone to
Euro guide matches no known printing conditions, Euro or
ISO!
Paul.
John Stanzione (Pantone US) gave this information.:
In a separate e-mail he confirmed that the Pantone inks used for both
Process Guides (US and EURO) are ISO 2846-1 compliant.
You can see that Pantone Euro printed material does not exactly match ISO
12647-2:2004.
I think Pantone will deliver Pantone ISO CMYK Process Guides if we insist
on that.
That however means that all parties have to agree that they will use
these standards.
Ask your local printers association and prepress or premedia association
to agree on the implementation of the ISO 12647-2 workflow.
If all agree Pantone will follow. They are marketing driven and will
(finally) deliver what their customers ask.
Right now it seems to early for them to add another CMYK ISO Process
Color Guide to their program. Their distribution channel does not want to
evangelize new workflows and standards. Right now that seems to
complicated for them.
Pantone can be convinced by a large ISO 12747 user base.
So let's promote that!
Regards, Henk
At 08:32 11-2-2005 -0500, John Stanzione wrote:
The CMYK
data (In the US) is based on the PANTONE solid to process guide
coated. Thus, the values are based on the workflow, which is
clearly outlined in the copy pages of the printed Guide. While the
inkset used meets ISO requirements for SWOP, the workflow does not
necessarily conform to all components of SWOP.
Here is the information from the printed Guide
(US):
Color Run Sequence and Screen
angles:
K @ 45 degrees
C @15 degrees
M @ 75 degrees
Y @ 0 degrees
Wet Ink Target Densities:
Black 1.75
Cyan 1.30
Magenta 1.42
Yellow 1.00
Line Screen:
175 lines/inch
(69 lines/cm)
Paper stock:
#1 grade 60 lb. gloss coated cover
stock
Dot Gain Target Measurements
25%
50%
75%
Black
19
25
18
Cyan
14
24
15
Mag
14
21
15
Yel
12
19
14
As promised, here is the workflow information
from the PANTONE solid to process guide coated EURO. This is the
workflow that was used to produce the EURO CMYK simulation values found
in the PANTONE ColorCue:
Print rotation and Screen angles:
Black @ 45 degrees
Cyan @ 15 degrees
Magenta @ 75 degrees
Yellow @ 90 degrees
Wet Ink Target Densities
Measurements were taken
with non-polarized ISO
Staus T reflection density filters
Black 1.80
Cyan 1.52
Magenta 1.50
Yellow 1.00
Line screen
69 lines/cm
Paper Stock
162 g/m2 coated stock
Dot Gain Target Measurements
40% Middle Tone
17% +/- 3% CMY
18% +/- 3% K
80% Shadow Tone
12% +/- 2% CMYK
I hope you find this information helpful.
Best regards,
John Stanzione
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