Epson TM-S9000II-NW Technical Reference Manual page 51

Print Start Position
Paper feed direction
origin
5 to 10 mm (Default setting: 5 mm)
Validation settings
Paper feed direction
Left margin
(dots)
Top margin (default setting: 0) and left margin (default setting: 0) settings are configurable
Top margin (dots)
Allowable printing area
Chapter 3 Advanced Product Use
50.8 mm
18 mm
10 mm
51