ESC/POS Command Manual
47
[Format]
ASCII
GS v 0 m xL xH yL yH d1...dk
Hex 1D 76 30
m xL xH yL yH d1...dk
Decimal 29
118 48 m xL xH yL yH d1...dk
[Range]
0
≤
m
≤
3, 48
≤
m
≤
51
0
≤
xL
≤
255
0
≤
xH
≤
255
0
≤
yL
≤
255
0
≤
yH
≤
8
0
≤
d
≤
255
k=(xL + xH x 256) x (yL + yH x 256) (k≠0)
[Description]
Selects Raster bit-image mode.
The value of m selects the mode, as follows:
m
Mode
Vertical Dot Density
Horizontal Dot Density
0, 48
Normal
180 dpi
180 dpi
1, 49
Double-width
180 dpi
90 dpi
2, 50
Double-height
90 dpi
180 dpi
3, 51
Quadruple
90 dpi
90 dpi
[dpi : dots per 25.4mm {1”}]
xL, xH, select the number of data bytes (xL+xH
×
256) in the horizontal
direction for the bit image.
yL, yH, select the number of data bytes (xL+xH
×
256) in the vertical
direction for the bit image.
[Details]
In standard mode, this command is effective only when there is no data
in the print buffer.
This command has no effect in all print modes (character size,
emphasized, double-strike, upside-down, underline, white/black
reverse printing, etc.) for raster bit image.
If the printing area width set by GS L and GS W is less than the minimum
width, the printing area is extended to the minimum width only on the line
in question. The minimum width means 1 dot in normal (m=0,48) and
double-height (m=2,50), 2dots in double-width (m=1,49) and quadruple
(m=3,51) modes.
Data outside the printing area is ready in and discarded on a dot-by-dot
basis.
The position at which subsequent characters are to be printed for raster bit
image is specified by HT(Horizontal Tab) ESC $ (Set absolute print
position), ESC
＼
(Set relative print position), and GS L (Ste left margin).
If the position at which subsequent characters are to be printed is not a
multiple of 8, print speed may decline.
