我以前从未遇到过该软件包的问题dsfont。但突然间，在我的所有文档中（与序言中的 s 组合无关\usepackage），dsfonts 在 PDF 中看起来非常差。它们质量很差，看起来像素化。我不知道这里发生了什么。此外，下面的最小工作示例给我的 PDF 看起来很糟糕。
\documentclass{article}
\usepackage{dsfont}
\begin{document}
\[\mathds{N}=\{0,1,2,\ldots\}\]
\[\mathds{ABCDEFGHIJKLMNOPQRSTUVWXYZ}\]
\end{document}
C:\Users\cala>updmap --verbose
Parsing config file "C:\Program Files\MiKTeX 2.9\miktex\config\updmap.cfg"...
Parsing "C:\Program Files\MiKTeX 2.9\fonts\map\dvips\tetex\dvips35.map"...
Parsing "C:\Program Files\MiKTeX 2.9\fonts\map\dvips\tetex\pdftex35.map"...
Parsing "C:\Program Files\MiKTeX 2.9\fonts\map\dvips\tetex\dvipdfm35.map"...
Parsing "C:\Program Files\MiKTeX 2.9\fonts\map\dvips\tetex\ps2pk35.map"...
Parsing "C:\Program Files\MiKTeX 2.9\fonts\map\dvips\amsfonts\cm.map"...
Parsing "C:\Program Files\MiKTeX 2.9\fonts\map\dvips\amsfonts\cmextra.map"...
Parsing "C:\Program Files\MiKTeX 2.9\fonts\map\dvips\amsfonts\cyrillic.map"...
Parsing "C:\Program Files\MiKTeX 2.9\fonts\map\dvips\amsfonts\euler.map"...
Parsing "C:\Program Files\MiKTeX 2.9\dvips\eurosym\eurosym.map"...
Parsing "C:\Program Files\MiKTeX 2.9\fonts\map\dvips\amsfonts\latxfont.map"...
Parsing "C:\Program Files\MiKTeX 2.9\fonts\map\dvips\mflogo-font\mflogo.map"...
Parsing "C:\Program Files\MiKTeX 2.9\fonts\map\dvips\rsfs\rsfs.map"...
Parsing "C:\Program Files\MiKTeX 2.9\fonts\map\dvips\amsfonts\symbols.map"...
Parsing "C:\Program Files\MiKTeX 2.9\fonts\map\dvips\xypic\xypic.map"...
Parsing C:\Users\cala\AppData\Roaming\MiKTeX\2.9\fonts\map\dvips\arabi\arabi.map...
Parsing "C:\Program Files\MiKTeX 2.9\fonts\map\dvips\psnfss\charter.map"...
Parsing "C:\Program Files\MiKTeX 2.9\fonts\map\dvips\psnfss\fpls.map"...
Parsing "C:\Program Files\MiKTeX 2.9\fonts\map\dvips\lm\lm.map"...
Parsing "C:\Program Files\MiKTeX 2.9\fonts\map\dvips\psnfss\pazo.map"...
Parsing "C:\Program Files\MiKTeX 2.9\fonts\map\dvips\pslatex\pcrr8rn.map"...
Parsing "C:\Program Files\MiKTeX 2.9\fonts\map\dvips\psnfss\psnfss.map"...
Parsing "C:\Program Files\MiKTeX 2.9\fonts\map\dvips\avantgar\uag.map"...
Parsing "C:\Program Files\MiKTeX 2.9\fonts\map\dvips\bookman\ubk.map"...
Parsing "C:\Program Files\MiKTeX 2.9\fonts\map\dvips\courier\ucr.map"...
Parsing "C:\Program Files\MiKTeX 2.9\fonts\map\dvips\helvetic\uhv.map"...
Parsing "C:\Program Files\MiKTeX 2.9\fonts\map\dvips\ncntrsbk\unc.map"...
Parsing "C:\Program Files\MiKTeX 2.9\fonts\map\dvips\palatino\upl.map"...
Parsing "C:\Program Files\MiKTeX 2.9\fonts\map\dvips\times\utm.map"...
Parsing "C:\Program Files\MiKTeX 2.9\fonts\map\dvips\psnfss\utopia.map"...
Parsing "C:\Program Files\MiKTeX 2.9\fonts\map\dvips\zapfchan\uzc.map"...
Parsing "C:\Program Files\MiKTeX 2.9\fonts\map\dvips\zapfding\uzd.map"...
Writing C:\Users\cala\AppData\Local\MiKTeX\2.9\dvips\config\ps2pk.map...
Writing C:\Users\cala\AppData\Local\MiKTeX\2.9\dvips\config\download35.map...
Writing C:\Users\cala\AppData\Local\MiKTeX\2.9\dvips\config\builtin35.map...
Writing C:\Users\cala\AppData\Local\MiKTeX\2.9\dvips\config\psfonts_t1.map...
Writing C:\Users\cala\AppData\Local\MiKTeX\2.9\dvips\config\psfonts_pk.map...
Writing C:\Users\cala\AppData\Local\MiKTeX\2.9\pdftex\config\pdftex_ndl14.map...
Writing C:\Users\cala\AppData\Local\MiKTeX\2.9\pdftex\config\pdftex_dl14.map...
Writing C:\Users\cala\AppData\Local\MiKTeX\2.9\dvipdfm\config\dvipdfm_dl14.map...
Writing C:\Users\cala\AppData\Local\MiKTeX\2.9\dvipdfm\config\dvipdfm_ndl14.map...
Copying C:\Users\cala\AppData\Local\MiKTeX\2.9\dvips\config\psfonts_t1.map
to C:\Users\cala\AppData\Local\MiKTeX\2.9\dvips\config\psfonts.map...
Copying C:\Users\cala\AppData\Local\MiKTeX\2.9\dvipdfm\config\dvipdfm_dl14.map
to C:\Users\cala\AppData\Local\MiKTeX\2.9\dvipdfm\config\dvipdfm.map...
Copying C:\Users\cala\AppData\Local\MiKTeX\2.9\pdftex\config\pdftex_dl14.map
to C:\Users\cala\AppData\Local\MiKTeX\2.9\pdftex\config\pdftex.map...
C:\Users\cala>updmap
答案1
问题是由于 的错误安装引起的dstroke.map：它安装在MiKTeX 2.9\fonts\dvips\doublestroke，而它应该安装在MiKTeX 2.9\fonts\map\dvips\doublestroke。
解决方案：将整个目录移动doublestroke\到正确的位置MiKTeX 2.9\fonts\map\dvips\。然后启动MiKTeX Settings to refresh the FNDB, and runupdmap`（以管理员身份）。
以下是我后来得到的结果：
