[XeTeX] cmyk problem

Tilman Hannemann tilmanh at uni-bremen.de
Fri Jun 19 16:27:07 CEST 2009

Hello Pete,

Am 19.06.2009 um 15:13 schrieb Peter Dyballa:

> In Tiger, I think, Apple introduced the option to print to PDF-X –  
> a special variant, PDF-X/1a, is particularly meant for press  
> business. Did you try this option?

No, because:

> I am still on Tiger and so I don't see the 1a variant ...

Same here. But from what I know of PDF-X/1a specs, I would guess that  
this procedure converts a given RGB value to a CMYK equivalent,  
rather than replacing it. RGB 1,0,1 converted to CMYK is not pure  
Magenta. You have to state somewhere explicitly that the channels for  
C, Y, and K need a zero value. In PitStop, it is possible to select a  
RGB-color and to replace it with an arbitrary other one, RGB or CMYK.



> --
> Mit friedvollen Grüßen
>   Pete
> Only two things are infinite, the universe and human stupidity, and  
> I'm not sure about the former.
> 				– Albert Einstein

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