Toshiba B-EP Series Interface Specification page 609

8.10.58 LEFT MARGIN SET COMMAND
Function Sets the left margin as specified by nL and nH.
The left margin is determined by [(nL + nH × 256) × dots].
Format [GS] LnLnH
Term ASCII: GS L
Hex: 1Dh 4Ch
[Parameter]
nL: Width of print area
nH: Width of print area
Left margin
Default value nL = 0, nH = 0
Explanation (1) This command will be valid only if received at the beginning of a line.
(2) If this command is received while the printer is in page mode, the defined parameter
setting will be applied after switching to standard mode.
(3) The command settings do not have any impacts upon page mode.
(4) The maximum permissible left margin is equal to the width of the printable area. If
a specified value exceeds the maximum value, it will be rounded to the maximum
value.
Reference Print Area Width Set Command ([GS] W)
CHAPTER 8 ESC/POS MODE (INTERFACE COMMANDS)
0 ≤ nL ≤ 255 (00h ≤ nL ≤ FFh)
0 ≤ nH ≤ 255 (00h ≤ nH ≤ FFh)
Printable area
Width of print area
8-82
[GS] L
B-EP Series