Re: UCR/GCR revisited
Re: UCR/GCR revisited
- Subject: Re: UCR/GCR revisited
- From: Koch Karl <email@hidden>
- Date: Tue, 10 Jun 2008 10:59:12 +0200
Am 10.06.2008 um 00:05 schrieb Marco Ugolini:
But, on the other hand, using different black generation policies
for images
on a single signature may have the *positive* effect of preserving the
integrity of images in that signature that we want to *protect*
against
possible color shifts on press, while allowing other less critical
ones to
shift as they may.
For example, if you have some images on an individual signature that
are in
full color and others that also use all 4 inks but are meant to look
neutral, you may want to separate the latter using a stronger black
generation (not "Max K" necessarily) to provide added protection
against
loss of neutrality, whereas the former can still be separated with a
lower
black component.
Hi Marco,
I agree with this, with one exception (again these exceptions):
The pressman needs to be aware of these mixed Light/Heavy K
(separated) images (to use Harolds wording, which definitely is more
correct than the UCR/GCR and especially UCA stuff). Light K images
will overly react on corrections in the color ink keys, while heavy K
images will overly react on corrections in the black ink keys.
Of course, all of the above concerns are superfluous (graem is right
here!), provided that and only if! the press works stable and
according to a (any) standard, the contract proof matches exactly this
standard, the press check is done under standard lighting and the
customer is sensible enough to accept the result that looks like the
proof and doesn´t want last minute changes during the press run ;-)
Let me make it clear: I´m all against retouching on press!
But then, when all these provisions are being met, we won´t have to
bother about the black any more. Then we can use max black and save
ink. Colorful images remain colorful, even with max black, if the
profiler works correctly.
Regards,
Karl _______________________________________________
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