Epson LX 300+II Reference Manual page 120

Continuous paper
A The minimum top and bottom margins above and below
the perforation are 0.17 inch (4.2 mm) each.
B The minimum left and right margins are 0.51 inch (13 mm)
each.
The maximum paper width is 10.0 inches (254 mm).
The maximum printable width is 8.0 inches (203.2 mm). If
the paper size is substantially wider than this, the side
margins will be wider than the minimum, but the printable
width does not increase beyond 8.0 inches (203.2 mm).
120
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