[NTG-context] CMYK workflow. How to set and should I worry about

[Keith McKay]

Thanks for your reply, Hraban
Best Wishes
Keith

On Tue, 23 Jun 2020, 22:06 Henning Hraban Ramm, <texml at fiee.net> wrote:

>
>
> > Am 23.06.2020 um 22:28 schrieb Keith McKay <mckaymeister at gmail.com>:
> >
> > Colleagues
> >
> > I'm getting ready to send  a book to the  printers and in their blurb
> they state "Ensure that you are using a CMYK workflow and export to
> PDF/X-1a:2001" . I can set the pdf format using \setupbackend but I'm
> unsure as to what to do about CMYK workflow. The book has no colour pages
> so I'm not sure if I really need to worry about CMYK workflow. Could
> someone advise?
>
> \setupcolors[rgb=no] to avoid rgb colors, or
> \setupcolors[state=stop] to force black and white.
>
> You must ensure yourself that your images are just black and white /
> greyscale (not in RGB mode).
>
> ConTeXt does some automatical checks and conversions depending on the
> PDF/X standard, but I’m not sure how far that goes (e.g. PDF/X-1 prohibits
> transparencies, and ConTeXt cares for that).
>
> Best, Hraban
>
>
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