Re: Dryingtime before profiling matte paper
Re: Dryingtime before profiling matte paper
- Subject: Re: Dryingtime before profiling matte paper
- From: Roger Breton <email@hidden>
- Date: Sat, 15 Jan 2005 19:46:54 -0500
> The major skill in press profiling, IMHO, involves knowing which two
> dozen sheets to measure from the run!
>
> (Artifical Intelligence is great, but no substitute for the real thing...)
>
> Bruce
The consensus in press profiling has always been picking sheets close to the
center of a process. Sheets corresponding to some density 'aim points' like
GraCol or ISO-12647 become the 'gene pool' from which a standard is evolved.
Let's take for example SWOP's historical 1993 press run. In that test, out
of all the thousands of sheets printed that saturday, only 12 sheets were
good enough for SWOP, based on these sheets proximity to SWOP's density aim
points. The rest is history.
Sheets may be picked ramdomly or systematically. Which scheme you favor
depends on which statistical school you belong to. But beyond that, I
maintain submitting the average to years of repro experience, like
Heidelberg did in PO5 current release, can only be beneficial. So much so
that, from a printing perspective, it even makes sense to systematically
appply this empirically-based correction to all press data.
I'm told this modeling approach is not based on artificial intelligence but
on plain common printing sense.
Roger Breton | Laval, Canada | email@hidden
http://pages.infinit.net/graxx
_______________________________________________
Do not post admin requests to the list. They will be ignored.
Colorsync-users mailing list (email@hidden)
Help/Unsubscribe/Update your Subscription:
This email sent to email@hidden