Epson LX-810 User Manual page 114

Graphics
The graphics commands
The graphics mode commands are quite different from other
commands used by the printer. For most of the other printer
modes, such as emphasized and double-wide, one BSC code turns
the mode on and another turns it off. The graphics commands are
more complicated because the code that turns on the graphics
mode also specifies how many columns of graphics will be printed.
After the printer receives this command, it interprets all
subsequent numbers sent to the printer as column patterns, until
the specified number of columns has been printed.
While there are alternate commands for four of the most
commonly used options (see Chapter 9), your printer has one
special command that allows you to use any of the seven graphics
options. The format of the command is:
BSC ^ m n I n2 data
In this command, m selects the graphics option and nl and n2
specify the number of coliunns to reserve for graphics. The
available graphics options are listed below.
Option
m
Horiz.density (dots/in.)
Single-density
0 60
Double-density
1 120
High-speed double-density*
2 120
Quadruple-density*
3
240
CRT 1 4 80
Plotter (1:1)
5 72
CRT II 6 90
Adjacent dots cannot be printed in ttiis mode.
4-12 Software and Graphics