Brother TD-4100N - Manual (Page 67)

ESC L 8-dot double-density bit image
[ASCII] ESC L n1 n2 Data
[Decimal] 27 76 n1 n2 Data
[Hexadecimal] 1B 4C n1 n2 Data
[Parameters] 0≤n1≤255,0≤n2≤3
The data contains n1 + n2 * 256 byte image data.
[Description]
Specifies that an 8-dot double-density bit image is printed with the number of dot positions
indicated by n1 and n2.
・ n1 and n2 are specified in the same way as for ESC K.
・ First, the data is lined up in one row as follows:
・ One dot of image data is enlarged to 6 dots vertically by 3 dots horizontally.
・ As a result, the image is 48 dots vertically by (n1 + n2 *256) * 3 dots horizontally.
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n1＋n2*256 byte
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LSB