Re: Scum Mark
Re: Scum Mark
- Subject: Re: Scum Mark
- From: "Martin Robinson / Chromalan" <email@hidden>
- Date: Mon, 17 Nov 2003 12:59:14 -0000
Rob,
Thank you for your advice, you are right it is the ColourBlind Professional
package. The RIP I remember this happening to the most was the ProofMaster RIP
by PerfectProof, but I remember this happening to laser printers without any
external RIPs too.
Until I upgrade my Profile software I will start creating 8 bit ones instead
and see how that goes. I understand that the Windows version (now version 5)
doesn't have this issue, only the Macintosh version! It's very worrying to
hear you've suffered with the ColorBlind application too and with the price
tag of #3,500 it's quite disgusting really!!
Can anyone please recommend what they think of PrintOpen 4.0.5.2 (the latest
version.) I think I remember that Andrew was going to run some tests, I would
like to compare this to ColorBlind and see what the results are like, it seems
to be a much less cumbersome profiling application to work with than CB Pro.
Thanks in advance for any feedback.
Martin
----- Original Message -----
From: Rob Griffith
To: email@hidden
Cc: email@hidden
Sent: Thursday, November 13, 2003 7:17 PM
Subject: Re: Scum Mark
> I use a profiling application (name withheld) which has a major bug in
the
> Macintosh version! Basically when you create printer profiles (mainly
cmyk
> inkjet,) you end up with what I believe they call a 'scum mark' in areas
of
> the printed image that should be clear of ink. I have been informed that
there
> is a way to 'remove the white point' that would fix this by editing the
nCIE
> file after measuring the patches but prior to creating the profile.
>
> Please get as detailed and in-depth as your hearts desire, I appreciate
any
> help that you can spare.
>
Hi Martin
Your use of the phrase "nCIE" file makes me think that you are talking
about
ColorBlind. If so you are right. There is an issue with ColorBlind profiles
and certain CMMs that puts in a scum dot, most notably on the Best RIP. It
gets worse if you use 16 bit profiles.
There are two things I can suggest. Firstly ditch Colorblind and get
something more up to date like Monaco or Gretag. Harsh I know but worth it
in the long term. I have been using Monaco now for almost a year after
suffering with ColorBlind and the results I get are so much better.
Secondly, there are ways to fix the problem, one is to use ColorBlind Edit,
but this can cause you to lose highlight detail that you want to keep. The
other that I think might work is some of the editing features in X-Rite's
ColorShop X. Send me a profile off list and I'll see if I can help.
I have also occasionally seen this problem in some rips when using an 8 bit
profile as source and a 16 bit profile as destination. If this is the case
then rebuild the destination profile as 8 bit.
Regards
Rob Griffith
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www.colourcollective.co.uk
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