RE: Laminate profile - Abstract profile?
RE: Laminate profile - Abstract profile?
- Subject: RE: Laminate profile - Abstract profile?
- From: Hanno Hoffstadt <email@hidden>
- Date: Mon, 10 Aug 2009 09:31:44 +0200
Mike,
I'd agree that it is easy to make your own custom profile pair.
Once you have the profiles, it is also not overly complicated to use
them correctly. There are even cases like inline varnishing where a
single profile is enough.
The difficulties arise under the hood, when your pre-lam profile
exists (one of the standard paper type 1/2 profiles), and you need
consistent glossy or matte laminated or varnished profiles (but you
cannot take the old original prints and apply all kinds of surface-
finishing to them). So you have to use models to predict the changes.
This is surprisingly complex despite being a purely optical effect (if
the inks have the necessary fastnesses - check your spot colors!). Ink-
paper and ink-ink interaction have many more than only optical aspects
and thus are much more complex, as you rightly pointed out.
Hopefully some day soon we'll have a set of consistent post-lam
profiles to go with the current standard profiles, tested and
therefore trusted. (You can help here...)
Then we are back at a not-too-complex color management application
level, but this time with standards to work with.
Best regards,
Hanno
Message: 3
Date: Sun, 9 Aug 2009 09:57:36 -0400
From: "Mike Eddington" <email@hidden>
Subject: RE: Laminate profile - Abstract profile?
To: <email@hidden>
Message-ID: <email@hidden>
Content-Type: text/plain; charset="UTF-8"
Maybe I'm missing something, but I'm not getting how this is so much
more complex than any other profiling scenario, other than than
having to prepare two profiles/proofs for per-lam and post-lam, and
knowing where to use them. Spot colors do add complexity, as they do
in any scenario. IMO, more complex issues exist, such as
determining the results of any given spot color on any given
substrate(grade 1, grade 5, SCA, board, Poly, etc), or worse,
managing brand colors across multiple processes and substrates where
without compensation, spot colors on proofs of all processes will
show misleadingly similar results. Or worse yet, determining the
blending characteristics of one or more spot colors with process
inks or each other.
One can get a idea of the effects of lamination of the spot color by
simply laminating the proof or an ink draw down.
Mike
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