Peter Rolf <indi...@gmx.net> writes:
> Oliver Heins schrieb:
>> Yes, I noticed that, too. But to me it looks like it is first knocked
>> out in the pdf, and then the overprint flag is set.
>>
>>
> Good point. In that case the text must be set twice, as knockout and
> overprint can't coexist. I have looked into the uncompressed mkii PDF
> (\nopdfcompression) and I can not see any obvious flaw. The parts are
> clearly separeted by '/GSknockout gs' and '/GSoverprint gs', the black
> text is not set twice.
>
> Just an idea: the colorspace of the picture is RGB, the text is set in
> CMYK. Maybe the mixed color spaces mess up things here.
But shouldn't the same effect be seen with other colors than black then,
too? And it only happens with black, and I think it happens even when
you do it within a cmyk-only document:
Can you test the following? My Acrobat is on a machine without net, and
my usb stick broke within the experiments.
Best regards,
olli
\setupcolors[state=start, cmyk=yes, rgb=no]
\starttext
{\bfb\setstrut
\startoverprint
\framed
[background=color,backgroundcolor=magenta,
foregroundcolor=yellow,align={lohi,middle},
frame=off,width=3.5cm,height=3cm]
{overprint\\\property[knockout]{knockout}}%
\stopoverprint
\framed
[background=color,backgroundcolor=magenta,
foregroundcolor=yellow,align={lohi,middle},
frame=off,width=3.5cm,height=3cm]
{knockout\\\property[overprint]{overprint}}}%
{\bfb\setstrut
\startoverprint
\framed
[background=color,backgroundcolor=magenta,
foregroundcolor=black,align={lohi,middle},
frame=off,width=3.5cm,height=3cm]
{overprint\\\property[knockout]{knockout}}%
\stopoverprint
\framed
[background=color,backgroundcolor=magenta,
foregroundcolor=black,align={lohi,middle},
frame=off,width=3.5cm,height=3cm]
{knockout\\\property[overprint]{overprint}}}%
\stoptext
--
Oliver Heins he...@sopos.org http://oliverheins.net/
http://blog.overheins.net/ F27A BA8C 1CFB B905 65A8
http://scriptorium-adp.de/ 2544 0F07 B675 9A00 D827
1024D/9A00D827 2004-09-24 -- gpg --recv-keys 0x9A00D827
Please avoid sending me Word or PowerPoint attachments:
http://www.gnu.org/philosophy/no-word-attachments.html
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