# Use of unicode-math results in “unprintable” PDF

In the following example, if I uncomment the inclusion of unicode-math, I still get an PDF that shows up fine in my PDF Viewer (Evince), but none of the equation shows up in print. Why is that?

\documentclass{scrartcl}

\usepackage{fontspec}
%\usepackage{unicode-math}
%\setmathfont{Asana Math}
% uncomment the previous two lines to get unprintable'' PDF

\begin{document}

magnetic constant $\mu_0 = 4\pi·10^{-7} \frac{\mathrm{H}}{\mathrm{m}}$

\end{document}


Edit: After updating to TL2013, the problem still persists. I guess some printer drivers have problems with the generated PDF (trying it on a Brother HL-5350DN btw). When I convert the PDF to PostScript with pdftops, the resulting *.ps file prints just fine. I'll try with my Canon printer at home later.

Edit 2: My Canon printer (MP-600R, with the default Ubuntu drivers) is doing the same thing, no equation.

Edit 3: Output of pdffonts:

name                                 type              encoding         emb sub uni object ID
------------------------------------ ----------------- ---------------- --- --- --- ---------
CELWMH+LMRoman10-Regular             CID Type 0C       Identity-H       yes yes yes      4  0
TRFNXO+Asana-Math                    CID Type 0C       Identity-H       yes yes yes      5  0
GZWLZZ+Asana-Math                    CID Type 0C       Identity-H       yes yes yes      6  0

• No problem here; LuaLaTeX and XeLaTeX, TeX Live 2013 – egreg Jul 5 '13 at 10:56
• Hm, I'll try updating. Still on TL2012. – Psirus Jul 5 '13 at 11:05
• @Psirus works for me: TL2012 and TL2013, LuaLaTeX and XeLaTeX, with Evince and Okular. – giordano Jul 5 '13 at 11:15
• It shows on all PDF viewers, as far as I can tell, but when I print it (physically), the equation is missing. – Psirus Jul 5 '13 at 11:38
• What sort of printer are you printing to? Using what driver? Have you tried printing as image''? – WillAdams Jul 5 '13 at 12:41

gs -q -dBATCH -dNOPAUSE -dSAFER -sDEVICE=pdfwrite -dSubsetFonts=true -dEmbedAllFonts=true \

replacing "in.pdf" with the PDF you have, and "out.pdf" with some convenient filename.