Epson TM-L90 Developer's Manual page 102

Confidential
Requirement for label length
(when labels (without black marks) or labels (with black marks) are used.)
Requirement for black mark intervals
(when receipt paper (with black marks) is used.)
Back (non-printing face)
B-4 Option and Consumable Products
25.4–101.6
Requirement for Label Length
Preprintable area
Requirement for Black Mark Intervals
30.4 – 106.6
[Units: mm]
15
40 – 160
or
more
Paper feeding
direction
[Units: mm]
Rev. A