Filter
Top Products
The grid on the right side of Figure 6-5 can be used for either Letter
Quality
or proportional characters. For Letter Quality you do not use all
the columns. See Table 63 for further information.
There is one restriction in designing characters. Dots in the same row
cannot print in adjacent columns-there must be an empty dot position
to the left and to the right of each dot that prints. This is true in draft,
Letter Quality and proportional.
Defining Your Own Characters
The first step in defining characters is to place the dots on a grid just
as you want them to print. The examples here, like the ones in the
graphics section, use an X to represent each dot. Figure 6-6 shows a
simple userdefined character on a draft grid.
Now translate the dot pattern created on the
paper
grid to a numeric
format so you can
send the
information to the LQ2500. Every
dot has
an assigned value. Each vertical column (which has a maximum of
24
dots) is first divided into three groups of eight dots. Each group of eight
dots is
represented by one byte, which consists of eight bits. Hence, one
bit represents each dot.
Figure 6-6.
user-defined character
Graphics User-defined Characters` 6-13