Hi.
I have a problem with the use of patterns ---it adds color (plates
CMY) to a document that should be all black (K).
This simple document
\documentclass{article}
\usepackage{tikz}
\usetikzlibrary{patterns}
\begin{document}
\begin{tikzpicture}
\filldraw[pattern=horizontal lines] (0,0) circle (3pc);
\end{tikzpicture}
\end{document}
as seeing with an Adobe Acrobat preflight, produces four plates
(CMYK), when it should only produce K. If you delete the patterns, you
get indeed just one plate (K). Even adding [pattern
color=black,pattern=horizontal lines] or [pattern color=black!
100,pattern=horizontal lines] you get 4 plates.
The problem is that the printing shop preflights the documents, and if
they see more than one plate in a job that should be only a one plate
printing, they reject the PDF.
I'm producing the graphics in separate documents from the book, and
then I \include them; therefore, I can use Acrobat and resave them as
composite gray, but I would like to know if there is a way of making
patterns produce only 1 plate.
Best,
Axel
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