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Peter Rolf
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 heins@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