Epson LX-90 User Manual - Parallel 8620 PIC for LX-90 - Page 19

Other Pitches, and without descenders the bottom dots of the j and y.

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Other Pitches In addition to pica, in which there are 10 characters per inch, the LX-90 can also print in other widths, or pitches. It does so by reducing the distance between pin firings. In the elite mode it prints 12 characters per inch and in the compressed mode it prints slightly more than 17 characters per inch. The pattern of the dots is not changed, but the horizontal space between them is reduced. Figure 3-2 shows enlargements of four sample letters in each of the three pitches. These letters are chosen to show how the LX-90 prints letters that are uppercase and lowercase, wide and narrow, and with and without descenders (the bottom dots of the j and y). This is pica. This is elite. This is compressed. Figure 3-2. The three pitches of the LX-90 The dot pattern of each character is carefully designed so that in pica no dot overlaps another. The reason is that in normal high-speed printing the pins cannot fire and retract and fire again quickly enough to print one dot overlapping another. 16

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Other Pitches
In addition to pica, in which there are
10
characters per inch, the
LX-90 can also print in other widths, or pitches. It does so by reducing
the distance between pin firings. In the elite mode it prints 12 charac-
ters per inch and in the compressed mode it prints slightly more than
17
characters per inch. The pattern of the dots is not changed, but the
horizontal space between them is reduced.
Figure 3-2 shows enlargements of four sample letters in each of the
three pitches. These letters are chosen to show how the LX-90 prints
letters that are uppercase and lowercase, wide and narrow, and with
and without descenders (the bottom dots of the j and y).
This is pica.
This is elite.
This is compressed.
Figure 3-2. The three pitches
of
the LX-90
The dot pattern of each character is carefully designed so that in
pica no dot overlaps another. The reason is that in normal high-speed
printing the pins cannot fire and retract and fire again quickly enough
to print one dot overlapping another.
16