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CHAPTER 7
DOWNLOAD
CHARACTERS
AND DOT GRAPHICS
Subjects covered in Chapter 7 include-
* Designing and printing your own characters
l
User-designed graphics
Using the procedures
outlined
so far, all of the printer's
standard
functions
can be utilized. There
are two additional
user-defined
functions
available: designing
and printing
your
own characters,
and designing
and printing
your own dot
graphics.
These two functions can be used to design and print any sym-
bol, or any graphic shape. This allows you to make your own
special symbols, or print a company logo. Some understanding
of dot matrix technology
will be useful.
DOT MATRIX
PRINTING
Before you start to learn how to create your own characters,
you'll need some understanding
of how dot matrix printers
work. The process is called dot-matrix
printing because each
character
is composed
of small dots arranged
on a matrix, or
grid. To see how that character
grid gets printed, you need to
take a look at the print head itself.
The print head in this printer comprises
24 wires apparently
arranged in a vertical column. If you were to remove the print
head and look at the wires, you would see two staggered
col-
umns of twelve wires. However,
the timing is such that they
print as one continuous
column of 24 wires.
Figure 7-1 shows an enlarged schematic view of the front of
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