GRACoL 2013
GRACoL 2013
- Subject: GRACoL 2013
- From: Mike Stewart <email@hidden>
- Date: Wed, 04 Dec 2013 10:48:42 -0600
Hello All: I hope I can explain myself clearly. We are using an Indigo
as a "proofer". We proof simulating various printing conditions. With
the Indigo we are able print on the actual stock the printer will use
(most of the stock is being supplied by the printers themselves).
We use ORIS Color Tuner to maintain colour and Hot folders to process files.
Our workflow is as follows. We get the Indigo into a repeatable state.
We run an IT8 through ORIS (various iterations) until we have a
colorimetric match to the printing condition (Ex. GRACoL 2006). We use
paper stocks that fall within spec. for GRACoL. As long as the printer
is using stocks that also fall within the GRACoL spec. we have a
"match" between our proof and the printer.
All this is fine until we come to uncoated stocks with high levels of
OBA's. Before the release of the GRACoL Uncoated 2013 profile we would
set up on an uncoated stock that was within the spec. for Fogra 47. We
would measure the IT8 with an ISis using the UV Cut measurement. If we
were proofing on printer supplied paper with higher levels of OBA's
than the spec. allowed, we simply let the colour go where it went.
This works quite well until we run into the situation where the
printer (making their own proofs) would use a UV cut measurement on
stocks very heavy in OBA's. Now the two proofs will not match.
What is the best way to set up in this scenario? Should I use the UV
Cut or not on papers with high levels of OBA. Remember - I am not
simulating on an Inkjet, I am using the actual printing papers on an
Indigo. Is there a correct way as a rule of thumb?
Thanks - Mike Stewart
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