Re: Bronzing
Re: Bronzing
- Subject: Re: Bronzing
- From: Terence Wyse <email@hidden>
- Date: Thu, 05 Jun 2008 19:07:28 -0400
User as much black as you can (lots of GCR and start the black as
early as possible, preferably 0%). Use as little of the light inks as
you can, especially light magenta, assuming you have control of the
light-dark ink transition. With ORIS Color Tuner, you might not have
control over either of these issues.
Best of luck,
Terry Wyse
On Jun 5, 2008, at 5:53 PM, Todd Shirley wrote:
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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| | >Bronzing (From: Todd Shirley <email@hidden>) |