Paper Alignment; Command Lists - Epson LX-300+II User Manual

A The minimum top margin is 4.2 mm (0.17 inch).
B The minimum left margin is 3.0 mm (0.12 inch).
The minimum right margin is 3.0 mm (0.12 inch).
The maximum printable width is 203.2 mm (8.0 inches).

Paper alignment

Printing starts at "0" on the scale. The unprintable area is to the
left of the "0."

Command Lists

Your printer supports the EPSON ESC/P control codes and IBM
2380 Plus (for LX-300+II)/IBM 2381 Plus (for LX-1170II)
emulation control codes listed below.
155