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Shared Printer Language
Three emulation control command languages are available to
change the printer mode:
l Epson Job Language (EJL)
l Printer Job Language (PJL)
• Emulation Switch (ES)
Epson Job Language (EJL)
The Epson Job Language is an original Epson language. It can
perform the following operations for your printer:
l Switching the printer mode
•
Transferring the printer’s system information to the computer
l Entering the Printer Job Language (PJL) mode
EJL can switch the printer mode with a monodirectional interface,
but a bidirectional interface is required for the computer to receive
system information from the printer.
For more details on EJL commands, see the end of this chapter. For
information on the PJL mode, see below and Appendix B.
Printer Job Language (PJL)
The Printer Job Language mode uses PJL commands to change
printer modes. Because this mode emulates the HP LaserJet series
III printer PJL feature, you can use software written for that printer
when it is shared in a network environment.
You can also enter the EJL mode from the PJL mode. For
information on the PJL commands, see Appendix B.
A-18
Appendix A