re: Best RIP -- first impressions
re: Best RIP -- first impressions
- Subject: re: Best RIP -- first impressions
- From: Dan Reid <email@hidden>
- Date: Sat, 22 Sep 2001 13:56:32 -0600
On Fri, 21 Sep 2001 23:26:24 +0100, "Martin [apple account]" <email@hidden>
wrote:
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We had a new Best RIP and Epson 5000 installed this week so that we could
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retire the Efi and two older 5000 engines that are getting a bit tired.
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>>snip
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Couple of questions for those of you who have experience of this RIP and
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proofing combination:
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1. What the hell is going on with the black dots in the shadow areas?
Epson 5000 needs to have a custom black curve generated so you don't get
"peppering" in the shadows. Force the black to start around the 60% mark for
starters and move towards 70% as needed.
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My Efi prints shadows badly, so the Best didn't have much to beat. But I was
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shocked to see some rather crude and large black speckles all over the
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shadow areas of the proof. The results are laughable as some of the world's
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most beautiful female models have suddenly developed pronounced 5 o'clock
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shadows!
Yup, that's the peppering issue. Not really a RIP issue here but more of
your profile generation parameters. You see the EFI has prebuilt separations
to deal with that problem.
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A test neutral ramp shows a lovely neutral result from CMY until you get to
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about 80 per cent and then you get a load of ugly black dots with a
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coarseness of an 85lpi screen overlaid on top.
Since your installer is a novice. When he/she gets trained you can *tackle*
a base linearization to optimize per channel ink limits and dot gain curves.
I have not tried v4.5 yet so not sure if they have fixed the broken TAC
(total ink limit) problem. OTW build TAC into your profile instead.
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How come the black dots are so big? And can we alter the RIP settings to
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make this *GCR from hell* less obvious?
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2. We have a Spectrocam and ColorBlind Matchbox+. Will this combination be
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OK for checking linearization and profiling papers?
Not my first choice but should get you better results than the EFI by far.
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3. We are using standard Epson inks in the 5000. We also use Epson's PQ
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inkjet paper, DuPont Cromalin paper and DuPont Matte Proofing paper. How
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long do I need to let the test strips dry out before measuring them?
Use the SpetroCam software to measure dry down. Measure every 15mins and
note any differences. Best of luck.
--
Dan B. Reid
RENAISSANCE PHOTOGRAPHIC IMAGING
Color Imaging Solutions Provider
http://www.rpimaging.com | email@hidden
Toll Free: (866) RGB-CMYK [ 866-742-2695 ]
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