[Openicc] Printing targets: App or driver ? Profiling RGB or CMYK

edmund ronald edmundronald at gmail.com
Tue May 17 14:49:40 PDT 2011


Agree, no reason to disallow either type. It is very useful to have the CMYK
support there, not least because DeviceCMYK support is guaranteed :)

Edmund

On Tue, May 17, 2011 at 11:46 PM, Alastair M. Robinson <
blackfive at fakenhamweb.co.uk> wrote:

> Hi,
>
>
> On 17/05/11 22:14, Kai-Uwe Behrmann wrote:
>
>  So far I had no problems to print out Cmyk targets. One can use Scribus,
>> CinePaint on openSUSE/Fedora or Photoprint for that. A
>> advantage is that Cmyk profiles impose no a bottlenck to the profiler by
>> a fixed Rgb->Cmyk trasnform in the some part of the print chain.
>>
>
> There are advantages to both types of profile, but I see no reason to
> disallow either type.  If neither type is disallowed, why does it matter
> that you'd prefer to use CMYK and I'd prefer to use RGB?
>
> The Poppler-based pdftoraster can already handle both colorspaces (though
> CMYK support is a bit of a hack, that involves Poppler crunching everything
> down to a flat RGB image, then pdftoraster converts it to CMYK using
> profiles.  This is necessary because Poppler itself - as built in all
> current distros - can't output CMYK.)
> I'd be very surprised if the Ghostscript-based analogue wasn't equally
> flexible, if not more so.
>
>
> All the best
> --
> Alastair M. Robinson
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