Bronzing
Bronzing
- Subject: Bronzing
- From: Todd Shirley <email@hidden>
- Date: Thu, 5 Jun 2008 17:53:15 -0400
Does anyone have and ideas on how to reduce (or totally eliminate)
bronzing effects (gloss differential) on Epsons using Ultrachrome K3
inks? We use ORIS ColorTuner to drive two Epson 4800s, one printing on
Epson Premium Photo Semi-gloss, the other on ORIS PearlPROOF Super
Semi-Matte, and they both show a rather nasty gloss differential. You
have to look at the proofs at an oblique angle, but when you do the
bronzing effect really pops out. When I print the same image direct
from photoshop to the driver (skipping the RIP), it is less pronounced
but still present. We are definitely using the photo black in both
printers, which is supposed to reduce this issue, but it looks pretty
bad on images that go through the RIP
The gloss differential happens right around the quarter-tones. Total
ink areas of about 20-50% are much shinier than the highlights and
darker colors, so when viewed obliquely they look weird. In the past
we didn't think there much we could do, but recently we received some
inkjet proofs on what appears to also be Epson Photo Semi-gloss and
there is absolutely NONE of this gloss differential. Unfortunately we
cannot contact the supplier of that proof.
Any pointers would be greatly appreciated. We are currently doing a
big job of 4/C black & white images and the client is killing us on
this issue, especially when they have proofs from other vendors that
don't display this problem.
Thanks!
-Todd Shirley
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