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Design grids
Printing user-defined characters is like printing graphics patterns
becuase
you send the printer precise instructions on where you want
each
dot
printed. In fact, planning a userdefined character is like
planning a small graphics pattern.
To design a character you use a grid that 24
dots
high-one dot for
each wire on the LQ2500 print head. The
width
of the character matrix
depends on the character set in use. For draft characters, the
grid is
nine dots wide.
For Letter Quality it is 29 dots wide,
and
for proportional characters it
is 37 dots wide. The
dots
for both Letter Quality and proportional are
spaced more closely together than those for draft.
Figure 65 shows the two design grids. The line at the side labelled
cap
indicates the top of a
standard
capital letter,
and
the line labelled
base
indicates the baseline for all letters except those with descenders
(the bottom parts of such letters as j and y). The bottom row is usually
left blank because it is used for underlining.
Figure 6-5.
Design grids
6-12
Gaphics
and User-defined
Characters