Brother TD-2120N - Manual (Page 73)

ESC/P Command Reference
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5. Control Command Details
First, the data is lined up in six rows as follows:
1b
yte
1b
yte
1b
yte
1b
yte
1b
yte
1b
yte
1b
yte
1b
yte
1b
yte
1b
yte
1b
yte
1b
yte
1b
yte
1b
yte
1b
yte
1b
yte
1b
yte
1b
yte
…
(n1+n2*256)*6 bytes
MSB
LSB
…
MSB
LSB
…
MSB
LSB
1b
yte
1b
yte
1b
yte
1b
yte
1b
yte
1b
yte
1byte 1byte 1byte 1byte 1byte 1byte
1by
te 1by
te 1by
te 1by
te 1by
te 1by
te
…
MSB
LSB
…
MSB
LSB
…
MSB
LSB
 One dot of the image data is enlarged as follows, according to the value of m.
m=71 m=72 m=73
 As a result, the image is sized depending on the value of m, as follows:
m=71 48 dots vertically×(n1+n2*256)*2 dots horizontally
m=72 48 dots vertically×(n1+n2*256)*1 dot horizontally
m=73 48 dots vertically×(n1+n2*256)*1 dot horizontally