Hi List
The free ISO-Profiles from ECI representing ISO-Printing Standards and
the colorimetrical control of the digital proof according to the
ISO-Standards and the ISO-Profiles is a big step forward.
The ISO Profiles and the workflow of colorimetric Proof Certification is
based on printing with a positive process for printing plates.
In the US, negative process for printing plates is the standard, which
results in higher TVA (5-6%) in the middle tones. This is also reffered
in the ISO 12647
The ECI ISO-Profiles are not working for the US market.
The main organizations for the US are GRACoL and SWOP.
For SWOP we have the TR 001 and I now several companies, which get a
SWOP Certification for ICC based Proofing Systems with TR 001 Data as
Source.
As SWOP is only for Web Offset printing (comparable to the
ISOwebcoated-profile), there is a demand for other Standard Data.
Some month ago I heard, that GRACoL and ANSI are working on standard
Data for Sheetfeed coated paper (TR 004 or TR 005 ?) which would be
comparable to the ISOcoated-profile.
Everybody is free to use such data for generating profiles and using it
in the FOGRA mediawegde for proof-certification.
Buying the FOGRA Mediawedge, you get an Excel-Sheet for extracting the
reference Lab-values from ISO 12640 / IT8 oder ECI 2002 data.
I know several german companies which are doing this for SWOP / TR 001,
if they send files and proofs to the US.
:-) Jan-Peter
Henrik Holmegaard schrieb:
On torsdag, dec 11, 2003, at 19:11 Europe/Copenhagen,
Chris Murphy wrote:
Because of how SWOP certification works, if you
want a SWOP certified
proofing system I'd consider any product on the list
quasi-proprietary, even if it's fully ICC based.
There are two positions, as Roger Breton pointed out a while ago:
(1) A printing press is by definition too unstable to be usefully
described in an ICC CMYK printer profile, and print profiling software
and print profiling instruments cannot usefully be applied to such a task.
(2) In the U.S. there is an organization which certifies proofing
systems according to a process for which the same organization has set
no real colorimetric tolerances.
The second position is intended to provide assurance without pressing
for instrument-based colorimetric tolerances. This position did not and
does not make sense.
Pre-certification of proofs without printing tolerances versus
self-certification of proofs with printing tolerances isn't much of an
argument . . . the latter wins out every time -:).
Thanks,
Henrik
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