Re: printing to ISO. is this possible?
Re: printing to ISO. is this possible?
- Subject: Re: printing to ISO. is this possible?
- From: Rich Apollo <email@hidden>
- Date: Sun, 11 Nov 2007 06:45:58 -0600
Hello all
I am trying to match our sheet-fed press to ISO 12647-2 as close as
possible.
The best Lab numbers I can get for primary colors are (white backing):
Cyan: 58,1 -34,7 -50,1
Magenta: 49,1 75 -2,9
Yellow: 89,3 -3,5 92,8
Black: 17,4 0,8 0,6
Numbers are close to ISO, but I would like to be closer. Specially
Cyan
and Yellow could be closer, but for that it looks like I have to
change
ink manufacturer.
Q: Should I try to get closer or it's just a waste of time
(hair-splitting)?
Please, I need your opinion!
BTW we make color proofs with ISOcoated_v2_efi.icc, and actually I'm
trying to get my press closer to proof. But that's same as ISO.
Thank you for your time!
regards,
Juris
------------------------------
Hi
I've run those numbers through our pressSIGN software because it
gives solid ink adjustments and ÆEs
These are the results:
Cyan ink +4% density - current ÆE3.86
Magenta ink 0% adjustment - current ÆE 1.49
Yellow ink 0% adjustment - current ÆE 1.54
Black ink +3% adjustment - current ÆE 1.8
So overall very good indeed. Any ÆE values < 2 when printed on paper
are really good.
The cyan ink should get closer, but it won't be by much.
Lee Badham
Those are really good numbers, Juris. You need to check your
overprint colors, too. I've had to give a little on the primaries to
get the overprints in compliance.
Rich Apollo
G7 Certified Expert
Adobe Certified Expert, Photoshop
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