An identity module can be used with a font module or by itself.
Bach identity module comes with a blank font module plugged into it.
If you use an identity module by itself, leave the blank font module
plugged in. If you use a font module, unplug the blank module and
replace it with the font module.
The Font Module
The font modules are available in a number of different typestyles,
including:
A font module must be connected to an identity module in order to
work. The ESC/P Expansion Identity Module maintains and extends
the LQ’s Epson identity, and allows you to add any of the optional
fonts.
C-3