Specifications

P25 Development Guide
www.bluebamboo.com
14
[Reference]
ESC -, GS !
ESC –
[Name] Turn underline mode on/off
[Format] ASCII ESC - n
HEX 1B 2D n
Decimal 27 45 n
[Range] 0 ≤ n ≤2 (or 48 ≤ n ≤ 50)
[Description] Turns underline mode on or off, based on the following values of n;
n Function
0(or 48) Turns off underline mode
1(or 49) Turns on underline mode (1 dot thick)
2(or 50) Turns on underline mode (2 dots thick)
[Note]
1
The printer can underline all characters (including right-side character spacing),
except for the space set by HT.
2 The printer cannot underline white/black inverted characters.
3
When underline mode is turned off by setting the value “n” to 0 or 48, the
following data is not underlined, and the underline thickness set before turning
off does not change. The default underline thickness is 1 dot.
4 Changing the character size does not affect the current underline thickness.
5
Underline mode can also be turned on or off by using ESC !. However, the last
received command is effective.
[Default] n = 0
[Reference]
ESC !
5. GS ! can also select character size. However, the setting of the last received command
is effective.
6 This command should be placed previous than any normal printing characters in a line.