Non-PostScript scaling errors
Before starts non-PostScript printing, it checks to see that the
printer resolution parameter matches the actual resolution of your printer.
If the resolutions don't match then will warn you that scaling problems
may occur. This warning appears just before the print dialog in case you want
to Cancel printing (you might have forgotten to switch to the correct
configuration file).
If you decide to go ahead and print the DVI file, you might see problems
such as horizontal gaps at regular intervals down each page.
prints a page by sending a sequence of horizontal bands to the printer.
The number of bands depends on how much memory is available (the band height
is displayed when showing statistics). Scaling problems can result in gaps or
overlapping at band boundaries, but they can be avoided by bumping up 's
memory to a suitably large value so that only one large band is needed to print
each page.