From: Duncan Hothersall via ntg-context <ntg-context@ntg.nl>
To: mailing list for ConTeXt users <ntg-context@ntg.nl>
Cc: Duncan Hothersall <dh@capdm.com>
Subject: Re: overprinting black
Date: Wed, 9 Nov 2022 16:22:23 +0000 [thread overview]
Message-ID: <CAN8fp9Ui2iqW_rgvevyYgx=WZxP9TewT1iFBvX_ge10dabb4QQ@mail.gmail.com> (raw)
In-Reply-To: <e26d7942-a756-91b2-997f-ebbfe0736ee6@fiee.net>
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Have you tried overprint=yes? I have that in old files which used to work
under mkii. I must admit I haven't had the need to use overprinting since
then, but I do recall that come colour handling wasn't ported across to
mkiv or later.
Duncan
On Wed, 9 Nov 2022 at 16:12, Henning Hraban Ramm via ntg-context <
ntg-context@ntg.nl> wrote:
> I’m not sure if this ever worked, but at least in latest LMTX it doesn’t:
>
> """
> \setupcolors[state=start,cmyk=yes,rgb=no,intent=overprint]
>
> \starttext
>
> \framed[
> background=color,
> backgroundcolor=yellow,
> ]{\ss\bfd
> Black should always overprint.
> }
>
> \stoptext
> """
>
> The black text and frame border don’t overprint the yellow background
> but knockout. The only way to check this (that I know of) is Acrobat
> Pro’s separation simulation; the screenshot shows a snippet of the
> yellow separation.
>
> Actually, setting “overprint” for all colors doesn’t make sense, it
> should be a setting for single color (but default for black):
>
> % desired interface:
> \definecolor[overBlack][k=1,intent=overprint]
>
> Hraban
>
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___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!
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___________________________________________________________________________________
next prev parent reply other threads:[~2022-11-09 16:22 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-11-09 16:10 Henning Hraban Ramm via ntg-context
2022-11-09 16:22 ` Duncan Hothersall via ntg-context [this message]
2022-11-09 16:31 ` Henning Hraban Ramm via ntg-context
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