Epson PLQ-20 Reference Manual page 160

Postamble
Maximum number of
recordable characters
(1 block)
Maximum number of
recordable characters
(2 block)
Number of separator
Center of vertical position
Horizontal start position
ISO7811
Bit density
Recording direction
Preamble
SOM (Start sentinel)
Recordable characters
EOM (End sentinel)
LRC Parity
Postamble
Maximum number of
recordable characters
(1 block)
Maximum number of
recordable characters
(2 block)
Number of separator
Center of vertical position
Horizontal start position
20 bits
105 characters
45 characters
60 bits
13.9 mm
9.5 mm from the left edge
75 bpi ± 5%
Left to Right
20 bits
B
0-9, A, D, E
F
even
20 bits
37 characters
23 characters
120 bits
10.4 mm
14.8 mm from the left edge
Appendix A Product Information 160