[XeTeX] cmyk encoded files

[Daniel Greenhoe]

On Sun, Nov 20, 2011 at 7:34 AM, Peter Dyballa <Peter_Dyballa at web.de> wrote:
> It seems so!
> XeTeX/XeLaTeX can be invoked with --no-pdf.
> The created XDV file gives hints that CMYK is used (color push cmyk <4 values>).

That is good news. And that was a clever method for checking. I did
not think of trying that myself.

Thank you!
Dan

On Sun, Nov 20, 2011 at 7:34 AM, Peter Dyballa <Peter_Dyballa at web.de> wrote:
>
> Am 19.11.2011 um 23:03 schrieb Daniel Greenhoe:
>
>> Version 2.11 of the xcolor package says that cmyk is "supported by
>> Postscripts directly" (page 8). So if I simply specify
>>  \usepackage[cmyk]{xcolor}
>> in the preamble and compile with XeTeX/XeLaTeX, is that sufficient to
>> ensure the resulting pdf is cmyk encoded?
>
> It seems so! XeTeX/XeLaTeX can be invoked with --no-pdf. The created XDV file gives hints that CMYK is used (color push cmyk <4 values>). Pdftops from the xpdf suite produces a PS file which also gives hints that colour is used in the CMYK model. Mac OS X's sips tells it uses RGB model...
>
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