Brother RJ-4040 - Manual (Page 91)

ESC/P Command Reference
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5. Control Command Details
ESC i a Switch command mode
ASCII: ESC i a n
Decimal: 27 105 97 n
Hexadecimal: 1B 69 61 n
Parameters
n: Command mode
0 or 48: ESC/P standard mode
1 or 49: Raster graphics mode
3 or 51: P-touch Template mode
Description
 Switches the command mode to ESC/P, P-touch Template or PTCBP (raster graphics) mode.
 Dynamically switches between the three modes.
 Since this is a dynamic command, after the printer is turned off and on again, the setting returns to the
previously setting.