Re: ICC workflow & DVL applications
Re: ICC workflow & DVL applications
- Subject: Re: ICC workflow & DVL applications
- From: Henk Gianotten <email@hidden>
- Date: Sun, 12 Mar 2006 23:56:24 +0100
At 12:56 12-3-2006 -0500, Kevin Muldoon wrote:
Does anyone have experience or advice for integrating an ICC workflow
in regards to separating for different ink densities for various
publications? In other words, when using SRDS publications specs, how
do you handle a conversion to different Ink Limits in a real
production environment?
Example: Vender receives an ad from client that will ship to three
different publications. All images are separated into U.S. Web Coated
(SWOP) v2 which is a 22% Tonal Value Increase and a 300% Total Ink
Density spec. However, each publication requests a different separation.
a) 'Bobs Motorcars' asks for TVI:28%, TIL:260%.
b) 'Retirement World' specs TVI:22%, TIL:280%
c) 'Mens Perspective' requests TVI:20%, TIL:320%.
Hi Kevin,
It looks that you want one ad reproduced with three different
press conditions. And one identical image in all three ads.
Is that the real question? One goal via 3 different routes?
I think I would just prepare one ad based on one profile.
And create a proof, based on that profile.
This PDF could be converted to several different PDF's by
means of a Device Link Profile transformation system.
It corrects the TVI, the TAC (or TIL), pure K, any other color
based on these different print conditions.
All based on the condition that the advertiser will accepts these different
press conditions but will not accept differences in color.
That's how a lot of prepress companies create ads for different publications.
Looking into the details of Bobs Motorcars (28% TVI and 260% TIL or
TAC), however, he will never reach one level of quality because the color
gamuts of Bobs Motorcars and Retirement World will have
a difference that, most probably, cannot be corrected enough.
Some newspapers (coldset) accept 4-color ads prepared for magazines.
They transform the images (contone and vector) form 16% TVI to 26% TVI
and from 340% TAC (or TIL) to 240% TAC. The ink color even changes
from ISO 2846-1 to ISO 2846-2.
However the LAB values of CMY change, the L value increases, the C values
decrease and the h values change slightly.
So the gamuts differ. Any experienced advertising agency will be able
to explain their customer that these gamut differences are normal.
The gamuts of ad 2 (Retirement) and ad 3 (Men's Perspective) won't
differ that much, I think.
You did not provide any information on the paper grades but most probably
they will match.
To conclude, DVL's would do a fine job.
No system, however, is able to meet the demand to create one identical ad
in all three publications. I think.
Regards, Henk.
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