Epson LQ-300+ User Manual page 118

Continuous paper:
A The minimum top and bottom margins above and below the
perforation are 4.2 mm (0.17 inch) each.
B The minimum left and right margins are 13 mm (0.51 inch)
each.
The maximum paper width is 254 mm (10.0 inches) and the
maximum printable width is 203.2 mm (8.0 inches).
For continuous paper wider than 229.2 mm (9.0 inches), the
side margins increase proportionally to match the width of
the paper.
118
A
Printable
area
B
A
B