Chapter 7: Graphics Commands for 24-Pin Printers 63
Graphics Select/Print Command (IBM AGM/E)
⻬ ML390 Turbo, ML391 Turbo ⻬ ML590, ML591
Function ASCII Dec Hex
Graphics Select/Print ESC * m n
1
n
2
[data] 27 42 m n
1
n
2
[data] 1B 2A m n
1
n
2
[data]
Note: The IBM AGM emulation combines the IBM Proprinter emulation with Epson LQ
graphics for special graphics applications.
This command is used to select the density, to designate the number of columns of data you'll
be sending, and to specify the data to be sent.
Parameter m
This parameter specifies which density to use when printing the graphic image. The table
below indicates the type of density for each value of m.
Table 40: Epson ESC * m Command —
8-Pin Graphics Density Codes for m Values (24-Pin Printers)
Value of m Graphics Type Pins
Horizontal Densit
(dots per inch)
0 Single Density 8 60 dpi
1 Double Density 8 120 dpi
2 High Speed Double Density 8 120 dpi*
3 Quadruple Density 8 240 dpi*
4 CRT I 8 80 dpi
6 CRT II 8 90 dpi
32 Single Density 24 60 dpi
33 Double Density 24 120 dpi
38 CRT III 24 90 dpi
39 Triple Density 24 180 dpi
40 Hex Density 24 360 dpi*
* Extrapolated (quasi density)
Parameters L
n
and H
n
These parameters tell the printer how many columns of data you'll be sending: 8-pin modes
have one byte of data per column, 24-pin modes have three bytes of data per column. These
parameters can be assigned any value from 0 to 255. To calculate the values, first determine
how many columns of dots there will be in your graphics image. Divide this number by 256
and assign the whole number to H
n
; assign the remainder to L
n
.
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