B-04
Bourroughs standard
Bit density 161, 210 Bit Per Inch ± 5%
Preamble 25 “zero” bits
Postamble 25 “zero” bits
Start sentinel (SOM) B
End sentinel (EOM) A
Recordable characters 0-9 and “E”
Recording direction Left to Right
Center of vertical position 12,01 mm
Horizontal start position 15 mm. from the left edge
Recordable characters number 30 max (161 BPI), 40 max (210 (BPI)
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