Re: Highlight TVI Not Accurate in Profile
Re: Highlight TVI Not Accurate in Profile
- Subject: Re: Highlight TVI Not Accurate in Profile
- From: Jan-Peter Homann <email@hidden>
- Date: Thu, 29 May 2014 23:27:15 +0200
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Hello William and List,
This is probably not only the case between of different tvi
calculations, but also an issue of smoothing flexo highlights during
the ICC profile calculation.
By the way, the extremly high TVI (26%) for 1,96% is an indicator,
that there is optimization potential in your flexo plate making
process and may be also in the combination of flexo plate and anilox
rollers.
Modern rasterization technologies and optimized compensation curves
for flexo platemaking should lead to a lower TVI at 1,96 %
You may should have also a look at colorlogic CoPrA3 for ICC profile
generation, which has some nice features for calculating ICC-profiles
for flexoptinting. See e.g:
http://www.colorlogic.de/help/?p=3473&lang=en
Best regards
Jan-Peter
Am 29.05.14 17:42, schrieb William Whitfield:
> Greetings,
>
> FYI - I recently posted this to Print Planet. I am a flexo printer
> and have created a profile using iProfiler for a poly stock which
> has a very high TVI. In order to make an accurate proof I had to
> build what I would call, an extreme gradation in my CGS proofing
> workflow, which led me to believe the profile is not accurately
> reporting my highlight TVI.
>
> I checked the TVI on press sheet with a 530; in ColorAnt using the
> measurement file; and, in ColorThink using the profile. ColorAnt
> matches the TVI in highlights that the press printed, but the
> profile in ColorThink does not. Here is the data for cyan:
>
> 1.96%: ColorAnt 26% Press 24% ColorThink 7% @1%, 13% @2%
>
> 2.75%: ColorAnt 30% Press 29% ColorThink 14% @2%, 20% @3%
>
> 4.71%: ColorAnt 36% Press 35% ColorThink 27% @4%, 32% @5%
>
> I have had some feedback as to why this is happening, but would
> appreciate some more. Additionally, is editing the profile in
> something like Profile Editor, which I still own, the only way to
> fix this. In my limited experience using iProfiler I do not see a
> way to make edits such as these to a profile.
>
> Thanks.
>
> -Bill-
>
>
>
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