[scribus] pxd/x3 export : apparently contains RGB images

[John Culleton]

On Friday 01 October 2010 11:32:15 eric hanuise wrote:
> On 01/10/10 16:54, Pierre Marchand wrote:
> > Vous (eric hanuise) avez écrit :
> >> On 01/10/10 16:32, Christoph Schäfer wrote:
> >>> On Friday 01 October 2010 12:30:15 eric hanuise wrote:
> >>>> Hi all.
> >>>>
> >>>> I've exported a PDF as pdf/x3 using isocoated v2 ICC profile.
> >>>> It contains several png images, which are rgb.
> >>>>
> >>>> As I understand it, the pdf exported by scribus should be cmyk
> >>>> only, and the images converted to cmyk during pdf generation.
> >>>> however, the printer came back to me and told me the pdf
> >>>> contained RGB images.
> >>>>
> >>>> Have I misunderstood the ability of scribus to convert
> >>>> everything to cmyk on pdf export, or is there some setting I
> >>>> missed ?
> >>>
> >>> Yes, this seems to be a misunderstanding, and to be honest,
> >>> it's quite common even among commercial printers. The PDF/X-3
> >>> standard explictly permits RGB imgaes (plus a colour profile)
> >>> to be included in a PDF, which is one of its biggest
> >>> advantages. In other words: Scribus adheres to the standard :)
> >>
> >> Thanks, bu this does not reply my question :) pdf/x3 is in fact
> >> irrelevant here.
> >> The printer requests cmyk only pdf's, with no rgb images inside
> >> it. How can I provide that to him ?
> >
> > In PDF export>  colors>  target = printer
>
> Thanks. This option is greyed out when using pdf/x3 (but shows
> 'printer'). When using another type of pdf (1.3 1.4 or 1.5) the
> prepress option does not allow to specify the icc profile to be
> used as intent. Will the profile defined in color management for
> printer be used ? (I'm using 1.3.7 on ubuntu)
>
> How can I check the saved PDF to know which profile have actually
> been used ?
> Also, how can I check that the saved PDF does indeed only contain
> CMYK objects and no RGB ? (Using tools available on linux)
>
>
>
>
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Excellent question. Don't know the answer. But I do know that when I 
use pdf x/1-a format (Scribus 1.5.0) I don't have problems with RGB. 
Of course all the other factors must be set correctly.

For members of this group only, if you have an sla file you want saved 
as PDF X/1-a please send it to sales at wexfordpress.com subject 
"scribus conversion."  For now I'll do this for free. We may have to 
wait a year for 1.6.0.
-- 
John Culleton
Wexford Press
"Create Book Covers with Scribus"
Printable E-book 38 pages $5.95
http://www.booklocker.com/books/4055.html