Epson TM-P80 Technical Reference Manual page 95

Requirement for black mark printing
The allowable relation between the reflecting rate in the black mark portion (1) and the non black
mark portion (2) must be as shown in the below:
Black mark portion (1):
Non black mark portion (2):
The reflecting rate means the value which is measured with a Macbeth density meter
(PCMII) D filter.
Preprintable area
15 or
more
Back(non-printing side)
16% or less
85% or more
[2]
[1]
Paper feed direction
30 to 300
3 to 5
Units:mm
Appendix
95