Epson ActionPrinter 4000, Руководство пользователя

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User-defined Characters
An example will show how to specify
n1
and
n2.
For instance, if you
wanted to redefine the characters A through Z,
n1
would be A (or
ASCII code 65) and
n2
would be Z (or ASCII code 90). So the
command ESC & 0 AZ (followed by the appropriate data) would
replace the entire alphabet of capital letters.
Following the specification of the range of characters to be defined
in this command are three data bytes, d0,
d1,
and
d2,
that specify the
width of the character and the space around it. The left space (in dot
columns) is specified by d0, and the right space is specified by d2.
The second byte, d1, specifies the number of columns of dots that
are printed to make up the character. By varying the width of the
character and the spaces around it, you can create proportional-
width characters that print at draft speed. The table below shows
the maximum values for these bytes.
Mode d1 d 0 + d 1 + d 2
Draft
9 12
Letter Quality 10 cpi
29 36
Letter Quality 12 cpi
23 30
Proportional
37 42
The last part of the command to define your characters is the actual
data that defines the dot patterns for each character. Since it takes
three bytes to specify all the dots in one vertical column, your
printer expects d1 x 3 bytes of data to follow d2.
Software and Graphics
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