Many people find that, if they use the standard conversion utilities:
ps2pdf, dvipdf, and then display using
acroread, the display on the screen is terrible, although it
prints ok. Remedies:
gs -version) that
underlies ps2pdf or dvipdf is 6.50 or later,
the problem should not happen. Occasionally you need to use the
-Ppdf option. ps2pdf or dvipdf on any Linux machine
(e.g. tank, neo).