Epson 1500 - Manual (Page 39)

Using Printer Emulations
A printer emulation is a set of operating commands that
determines how data sent from your computer is interpreted
and acted upon by the printer. Your printer has several resident
emulations:
HP IIP LaserJet (ActionLaser 1000)
HP III LaserJet (ActionLaser 1500)
Epson LQ
Epson FX
Epson GL/2 (ActionLaser 1500).
The HP LaserJet IIP emulation is the default setting for the
ActionLaser 1000. HP LaserJet III emulation is the default
setting for the ActionLaser 1500. See Appendixes B and C for
detailed information on all of your printer’s emulations.
In most cases you will not need to change the default setting.
However, there are four reasons why you may need to use a
printer emulation other than the default setting:
If you need to print documents already formatted for a dot
matrix printer.
If you need to use application programs that do not
support an HP LaserJet printer.
If you are using the optional PostScript identity card.
If you are using Epson GL/2 mode with the ActionLaser
1500.
Controlling Your Printer 1-23