Epson TM-T88 Series Technical Reference Manual page 84

Black mark printing specifications for liner-free label paper
When using liner-free label paper, the paper must meet the following conditions:
• Black marks are printed on the back side (non-printing side)
• The combination of reflection rate of each area satisfies the table below.
Note: Reflection rates are measured by the Macbeth PCM-II (Filter D). The back of the paper is measured.
Reflection rate of black mark area (1)
Reflection rate of area outside black
mark (2)
80/58 mm width paper
2.39 {0.09"}
84
17% or
less
90% or
more
Glued area
23.01 {0.91"}
Permitted preprint area
Paper width 57.5 ± 0.5 mm {2.26 ± 0.02"} or
79.5 ± 0.5 mm {3.13 ± 0.02"}
Back (non-printing side)
16% or 15% or
less less
85% or 80% or
more more
1
2
12.7 ± 1.58 {0.50 ± 0.06"}
15.0 {0.59"}
14% or 13% or
less less
75% or 70% or
more more
Paper feed direction
Units: mm