Toshiba B-EP Series Interface Specification page 423

jj: Data length
00 to 99
NOTES: 1. A two-digit value (00 to 99) is also available.
2. When "00" is designated, the length is equivalent to the data
3. In IrDA: TEC Protocol, when the data length value is set to
k: Data code
1 (Fixed value): JIS8 code
l: Fixed data No.
0 (Fixed value)
CHAPTER 6 LABEL MODE (INTERFACE COMMANDS)
sent by the Data Print Command.
(JIS8 code: Data which is delimited by [LF])
Data having a max. of 2000 digits is acceptable.
250 or more, it can be sent by using the multiple packet format
for the Data Print Command in several packets.
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B-EP Series