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Vertical Direction Horizontal Direction
Dots
Dot Density Dot Density
Max. Dots
0 8-dot single density 8 67 DPI 101 DPI 192
1 8-dot double density 8 67 DPI 203 DPI 384
20 24-dot single density 24 203 DPI 101 DPI 192
21 24-dot double density 24 203 DPI 203 DPI 384
ESC * m n1 n2 [d] k
[Function] Specifying the Bit Image Mode
[Code] <1B>H<2A>H<m><n1><n2> [d] k
[Range] {m= 0, 1, 20, 21(Hex)}
{0 =< n1 =< FF(Hex)}
{0 =< n2 =< 1(Hex)}
{0 =< d =< FF(Hex)}
{k = n1 + FF(Hex) x n2} (m=0, 1(Hex)) Number of bytes containing image data
{k = (n1 + FF(Hex) x n2) x 3} (m=20, 21(Hex)) Number of bytes containing image data
[Outline] According to the number of dots specified in n1, n2, specify the bit image of mode m.
• The No. of dots printed is divided by 256, whose quotient is taken as n2 and residual
as n1.
•Bit image data is sent starting from the top to bootom and from the left to right
(vertical columns scanning). In modes m=0, and 1 only one byteper column is sent
and in mode m-20h, 21h 3 bytes for each column are sent.
•d is bit image data, the bits subject to printing are taken as “1” and those not as
“0”.
• The bit image modes specified by m are shown as follows:
[Caution] • When the values set in m (bit image mode) are out of the above range, the data
following after n1 is processed as normal printing data.
•After completion of bit image printing, printer returns to normal data processing
mode.
• Line space is automatically set to 0.
Modem (Hex)