Re: Rip Software
Re: Rip Software
- Subject: Re: Rip Software
- From: Dan Reid <email@hidden>
- Date: 02 Feb 2006 09:51:29 -0800
- Date: Thu, 02 Feb 2006 09:51:52 -0700
- Thread-topic: Rip Software
on 2/1/06 5:37 PM, Matthew Kelly at email@hidden wrote:
> I worked with the Roland FJ500 and the same ink set and used the
> ColorBurst Prepress RIP, which handles the 8 colors quite well, and
> allowed one to apply curves to each of the colors. It also allows
> the creation of custom spot color values.
>
> My objective was to create a hifi (or Hexachrome) profile with a 4
> color press as the source, and then use the expanded proofer gamut to
> create better Pantone matches. I would enter in the lab values from
> Gretag Macbeth's Colorpicker, having assigned to the application the
> hifi profile, into the custom spot color table in Colorburst. It
> seemed crazy but it just might work.
Nope that's a great idea.
>
> The reality was that I was never able to get a proofer gamut that was
> any better than what I was getting from a Sherpa43 CMYKcm. I tried
> various papers and Pantone Vantage inks. I used ProfileMaker with
> the multicolor plug-in for the hifi profile.
>
To state the obvious, you did send out GMB separated Hex chart? Your
Hexachrome profile should look quite different from a traditional 4/C
profile. Obvious excursions in the orange and green.
> When I looked at canned profiles, they were not any better.
>
> So my point is, is it possible to get a good hexachrome profile off
> of the Roland HiFi, as compared to a press set up for hexachrome? If
> it is the fact that it is not possible, that would relieve me of
> being the source of the failure.
>
>
I have been doing extensive testing of Hexachrome proofing with a FJ540 here
with all the RIPs under the sun. Though ColorBurst Win can't proof a
separated Hexachrome press file to a Roland Hexachrome printer you should be
able to get excellent proofs of 4/C files with spot colors emitted in
postscript stream to get the Pantone color matches you are seeking. Make
sure those Pantone colors are showing up in the postscript stream.
--
Dan B. Reid
RPimaging
Color Management Products and Training for Print, Internet, and Motion
Graphics
http://www.rpimaging.com | Toll Free: (866) RGB-CMYK
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