At 22:27 9-8-2004 +0100, you wrote:
I believe that it is commonly felt that the profile for
ISO Web coated
gives a good result for those who print to the ISO 12647-2 spec, which
calls for Ink that conforms to another ISO number (ISO 2846-1 I believe).
I saw that there was a point raised earlier making a reference to the
proof4press specification (PPA) which is based on a Dupont "curve" for one
of their devices called Euro Offset DP10. Calibrated proofs created by
Dupont devices with this curve are accepted by Magazine Publishers in the
UK as a de-facto proofing standard.
In conversations with web-offset printers in the UK, most claim to use the
ISO ink sets, which makes it possible for them to print to the ISO 12637-2
spec. I have seen a report created by an "independant" saying that this
Dupont "curve" is a good representation of ISO 12647-2, but I don't
believe it. I have a suspicion that this Dupont "curve" is based on a
different ink set called "European Colour Scale" (DIN 16539 I believe),
and not the ISO Ink set.
Does anybody know what ink set (or printing condition) the Dupont "Euro
Offset DP10" curve tries to represent ?
Are Inks based on Euroscale still in commercial use today?
There seems to be some confusion at the ink producers and vendors.
"EuroScale" or "Euroskala" does not exist anymore.
We left those old Din-standards and ink producers will be able to deliver
ISO 2648-1 inks. It's an international standard and in spite of the fact
that a lot of Americans seem to believe that ISO 2648-1 is linked to
"Euroscale" it's not.
In the latest NPES Specs CGATS Recommended Practise, the Color
Characterisation Data sets 2846-1 is clearly described as the ink standards
to be used.
Gracol, SWOP and SNAP define the use of ISO 2846-1 and ISO 2846-2 (coldset)
standards.
Larry Walter of Fuji wrote on that subject several interesting articles.
And our color guru David McDowell of Kodak (and NPES) recently explained
why this is so important for all printers around the world.
The problem however, seems that the ink researchers and technicians know
very well what to do.
Ink marketing managers sometimes lack some knowledge and still call those
new inks based on old marketing names.
In a recent survey we found out that most suppliers and producers can
deliver inks based on ISO 2846-1 and ISO 2846-2 but the sales departments
still called those inks "EuroScale". That's wrong.
In Germany a handy booklet "CMYKhandinhandbook" was published by a prepress
service SatzInform provider in Berlin. The color scales were printed based
on ISO 12647-2 print standards and ISO 2846-1 ink standard. In the masthead
the ink producer is mentioned and the name of the inks too.
The proudly call them the new "EuroScale" inks. That's wrong. Any ISO
2846-1 compliant ink cannot be named "EuroScale".
So forget the part "Euro" in your ink. The only organization which may use
the name Euro Offset Standard seems Brunner Systems in Switzerland. The
have a kind of copyright for the name "EuroOffset".
Bur EuroScale European Scale or EuroSkala are non-existent.
Dupont has to rename their internal standards too.
And better explain which version of ISO 12647-2 they comply.
The old version of 1997 or the 2004 version, now in use by BVDM, Fogra and ECI.
regards, Henk