Print Quality Problems - Epson EPL-N2010 Reference Manual

Position of the printout is not correct.
Make sure that you are using the correct page length and margin
settings in your software program.
Graphics don't print correctly.
Make sure that your software program is set for the printer
emulation you are using. For example, if you are using the LJ4
emulation mode, be sure that your software program is set for a
LaserJet 4 printer.
If you are using a serial interface, make sure that you set the parity,
baud rate, number of data bits, and number of stop bits to match
the computer.
Graphics require large amounts of memory; see "Memory
problems" in this chapter for more help.

Print quality problems

The background is dark or dirty.
Turn off the printer. Clean the paper path inside the printer using
a soft, dry cloth.
Clean internal printer components by printing three pages with
only one character per page.
You may not be using the correct type of paper for your printer.
If the surface of your paper is too rough, printed characters may
appear distorted or broken. Smooth, high-quality copier paper is
recommended for best results. See "Paper Specifications" in
Appendix A for information on choosing paper.
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Troubleshooting and Maintenance