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
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
___________________________________________________________________________________ If your question is of interest to others as well, please add an entry to the Wiki!
maillist : ntg-context@ntg.nl / https://www.ntg.nl/mailman/listinfo/ntg-context webpage : https://www.pragma-ade.nl / http://context.aanhet.net archive : https://bitbucket.org/phg/context-mirror/commits/ wiki : https://contextgarden.net
___________________________________________________________________________________
Am 09.11.22 um 17:22 schrieb Duncan Hothersall:
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.
Thank you for the hint, but it doesn’t work, neither in \setupcolors nor in \definecolor. Hraban
participants (2)
-
Duncan Hothersall -
Henning Hraban Ramm