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,......
,-,.
........
,-,.
Data Byte
Number of
Print Electrode
Bit Number
Electrodes
Position
7 Top
4
1
-
4 Top
6
5
4
3
2
1
0
4
5-8
4
9 - 12
4
13 - 16
4
17
-
20
4
21 -
24
4
25 -
28
Bottom
4
29
-
32 Bottom
The
following example is for 5:6 Aspect
Ratio
and would produce
the graphic symbol
.._
.
LPRINT CHR$(27)
;
CHR$(75)
;
CHR$(8)
;
CHR$(0)
;
CHR$
(255) ;CHR$ (
127
)
;CHR$
(63)
;
CHR$ ( 31)
;
CHR$ (
15)
;
CHR$ (
7) ;
CHR$
(3)
;CHR$
(1)
;
ESC L
Dual Density Bit Image
ESC L
Ln Hn
n1 n2
...
nk
This
command changes
the
printer
from text to bit image printing
at a horizontal dot density of 120 dpi. Each data byte
(nk) repres-
ents one column of
eight
dots. The vertical dot density is
deter-
mined
by the active horizontal-to-vertical aspect
ratio.
The aspect
ratio is selected by the ESC n
command.
The default aspect ratio
is 5:6. The number of bit image data bytes printed is equal to
256
times
Hn
plus
Ln.
All text printing modes are
suspended
by the
bit
image
printing
mode.
Bit image commands and text may be
mixed on the same
line.
The
printer ignores any bit image data
which would print
beyond the
right margin or more than 1584
bytes for a
line
length of 13.2 inches.
5:6 Aspect Ratio:
When this aspect ratio
is
selected, the printer
assumes
a horizontal
dot density of 120 dpi and a vertical density
of
72 dpi.
For
a complete
discussion,
see the description for the
5:6 aspect ratio
in
the
ESC
K (Normal Density Bit
Image)
command.
Reference
4-35
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