ref:
http://ubuntuforums.org/showthread.php?t=188860
sudo apt-get install cups-pdf
chmod u+s /usr/lib/cups/backend/cups-pdf

系統->系統管理->列印->新增印表機
choose “Generic Printer” and then used the “Postscript Color Printer (Ver 3)” driver.

印出來的檔案在
~/PDF/下