Filter
Top Products
5. The last important thing to do is to reset the printer to its default
settings, including the normal line spacing (line
180).
Notice that the graphics command (ESC K) can be in effect for only one
print line. To print more than
one
line of graphics, the graphics
command must be issued before
each
line.
Density varieties
Although all the examples so far in this section have been in the single-
density graphics mode, there are
seven
other eight-pin densities and two
that use all nine pins.
Nine-pin graphics is not necessary for most uses, but you can find the
command (ESC ^) in the Command Summary in Chapter
8.
The four
most common eight-pin modes are ESC K, ESC L, ESC Y, and ESC Z.
There is also a general purpose command for any of
the
eight-pin
graphics modes: ESC ^.
This command is used in the same way as the
individual commands, except that before nl and n2 you must send the
code for
the
graphics mode required.
The different graphics modes are summarized in the following table:
Alternate
Code
Horiz. density
m
(dots/in)
ESC K
0
60
ESC L
1
I
120
Option
Single-density
Double-densitv
High-speed double-density*
ESC Y
2
120
Quadruple-density*
ESC Z
3
240
CRT I
none
4
80
Plotter
(1:1)
CRT II
none
5
72
none
6
90
Double-density plotter
none
7
144
*Adjacent dots cannot be printed in this mode.
Modes
4, 5, 6,
and
7
are special modes that alter the horizontal density
to give the proportions of a computer monitor (the CRT modes) or to
match the vertical density so as to give round circles
(the
plotter mode).
In two modes, high-speed double-density and quadruple-density,
the
print head
cannot
print two consecutive dots with
the same
pin, so it
Using Software and Graphics 4-15