Brother TD-2120N - Manual (Page 36)

ESC/P Command Reference
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5. Control Command Details
ESC g Apply micron pitch (15 cpi)
ASCII: ESC M
Decimal: 27 77
Hexadecimal: 1B 4D
Parameters
None
Description
 Prints the subsequent text with the elite pitch (15 characters/inch).
 This command is not apllied to 203dpi printers.
 The character spacing is 20 dots.
 If the character width is 20 dots or less, the character spacing is specified as 20 minus the character width.
 If the character width exceeds 20 dots, the character spacing is specified as the character width.
(The spacing between characters is 0 dot.)
In this case, the pitch does not exactly equal the elite pitch.
 With double-width characters, the character spacing is doubled (40 dots).
 With half-width characters, the character spacing is halved (10 dots).
 When the character spacing is changed with ESC SP, the setting is updated.
 This command is invalid when proportional pitch is selected.
 In outline fonts, the spacing between characters is 0 dot.
Example
For a 11-dot font at full width:
Ａ Ｂ
9 dot
11 dots
Ａ Ｂ
22 dots
18 dots
Full width Double width