Specifications

Confidential
SHEET
90
NO.
SHEET
REVISION
H
TITLE
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91
TM-U590 series
Specification
(STANDARD)
• The relationship between the image data and the dots to be printed is as follows:
8-dot bit image
1 half dot
Print data
Single density
Double density
Print data
Bit-image data
Bit-image data
LSB
LSB
MSB
MSB
d3d2d1
d3d2d1
ESC
-
n
[Name] Turn underline mode on/off
[Format] ASCII ESC
-
n
Hex 1B 2D n
Decimal 27 45 n
[Range] n = 0, 1, 48, 49
[Description] Turns underline mode on or off, based on the following values of n:
n
Function
0, 48 Turns off underline mode
1, 49 Turns on underline mode (1-dot thick)
[Notes] • The printer can underline all characters (including right-side character spacing),
but cannot underline the space set by HT.
• The printer cannot underline 90° clockwise rotated characters and white/black
inverted characters.
• Changing the character size does not affect the current underline thickness.
• Underline mode can also be turned on or off by using ESC !. Note, however, that
the last received command is effective.
[Default] n = 0
[Reference] ESC !