To print a DVI file that uses PostScript fonts on a non-PostScript printer,
you must have the corresponding screen fonts installed in your system.
For example, if ptmr8r appears in a DVI file then will
try to use the screen font Times.
If Times is not installed then will display an error
message and use the system font instead (normally Chicago).
When previewing a DVI file, will warn you if it can't find the
screen font for a PostScript font; all characters from such a font will
be shown using the system font in the missing_fonts color.