Epson TM-T88 Series Technical Reference Manual page 85

Appendix
40 mm width paper
1
2
Glued area
Paper feed direction
12.7 ± 1.58 {0.50 ± 0.06"}
20.6 {0.81"}
2.39 {0.09"}
15.0 {0.59"}
Permitted preprint area
Width 39.5 ± 0.5 mm {1.56 ± 0.02"}
Back (non-printing side) Units: mm
85