5525B/31/32 Line Matrix Printer LinePrinter Plus Programmer's Reference

Select Graphics Mode
131
Select Graphics Mode
ASCII Code ESC * m n1 n2
Hex Code 1B 2A m n1 n2
Dec Code 27 42 m n1 n2
Purpose Turns on 8-pin bit image graphics mode m . Table 30 charts the
graphics modes available.
Discussion The total number of columns =
n1 + 256 n2.
n1
= (Number of DATA bytes) - 256( n2 )
(remainder of division of number of DATA bytes by 256,
sometimes referred to as MOD 256)
n2 = (Number of DATA bytes) / 256 (quotient of division)
NOTE: This command does not suppress hexadecimal FF from printing.
Table 30. Epson Graphics Modes
m Option
Alternate
Code
Density*
(dots per inch)
Resolution**
(dots per inch)
0 Single density ESC K 60 120
1 Double density ESC L 120
120
1
2 High-speed double density ESC Y 60
120
2
3 Quadruple density ESC Z 120
240
1,2,3
4 CRT I none 80 160
5 Plotter (1:1) none 72 144
6 CRT II none 90 180
7 Double density plotter none 144
144
1
1
Prints at half speed.
2
Data can be sent incorrectly. In these modes, no dots can be closer horizontally than the current font dot
density. Sending incorrect data does not damage the printer.
3
240 dpi is simulated by combining the dots from two adjacent columns into one 120 dpi dot column.
* Number of horizontal dots per inch the printer can make.
** Number of dot columns available.