[Openicc] Printing Plans GhostScript

Hal V. Engel hvengel at gmail.com
Wed Mar 2 15:24:44 PST 2011


On Wednesday, March 02, 2011 03:06:32 PM Chris Murphy wrote:
> On Mar 2, 2011, at 2:31 PM, Kai-Uwe Behrmann wrote:
> > Am 02.03.11, 13:25 -0700 schrieb Chris Murphy:
> >> Yes but once it's at pstopdf it's already separated from the application
> >> and the CPD, there's no way to know/communicate what the user intention
> >> is: /Device = sRGB, or /Device = /Device.
> > 
> > Ah, I see. But if I read Till correctly the prefered Linux printing
> > format is PDF. So PostScript might not play that important role any more
> > and we do not need to suggest it to calibration software and early
> > colour binding print file creators. If you had a actual example I might
> > get a better idea what makes your concern around PostScript. Are you
> > afraid that existing workflows and devices will somehow break?
> 
> I'm just trying to understand the general propositions. But I agree with
> Gerhard that leaving PostScript behind is a potential issue because there
> will be legacy applications that continue to churn out PostScript for
> years, even after pstopdf CUPS prefilter is applied to the chain. Even
> once you do that, you don't automatically inherent OutputIntent. You'd
> need a CPD that captures the PostScript and immediately turns it into a
> PDF at that stage, before it even gets to CUPS.

The CPD only accepts PDF spool files.

> 
> I think the print pipeline can and should handle all PDF. Otherwise you
> need a gatekeeper application to print something as basic as PDF/A
> correctly. And in that case, there are a lot of PDFs in the world, and
> will continue to be created, that are /DeviceRGB or /DeviceCMYK and will
> look like crap if they are printed to most any output device known to
> mankind if no substitution of the device space occurs.
> 
> Chris
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