Epson Stylus 820 [91/573] Esc define user defined characters

Epson Stylus 820 [91/573] Esc define user defined characters
C-84 Individual Command Explanations
ESC & Define user-defined characters
ESC/P 2 ESC/P
Format
ASCII ESC & NUL n m [a0 a1 a2 d1 d2 . . . dk]
Hex 1B 26 00 n m [a0 a1 a2 d1 d2 . . . dk]
Decimal 27 38 0 n m [a0 a1 a2 d1 d2 . . . dk]
Parameter range
0 n 127
0 m 127
n m
LQ mode Draft mode
0 a1 37 0 a1 15
0 a0 + a1 + a2 42 0 a0 +a1 + a2 18
Normal characters Super/subscript characters
k = 3 × a1 k = 2 × a1
Function
Sets the parameters for user-defined characters and then sends the data for those
characters, as described below:
n Character code of the first character to be user-defined
m Character code of the last character to be user-defined
a0 Space to the left of each proportional user-defined character
a1 Actual width of user-defined characters
a2 Space to the right of each proportional user-defined character
d1 . . . dk Character data
Notes
The data within brackets in the Format section above is repeated for each character you
define.
Defining characters when the following attributes are set results in the user-defined
characters having those attributes: superscript, subscript, proportional spacing, draft
mode, and LQ mode.
Always cancel italic characters with the ESC 5 command before defining characters.
After defining user-defined characters, you can italicize them by sending the ESC 4
command.
User-defined characters with differing attributes cannot exist at the same time. For
example, if normal-size user-defined characters have already been defined, and you use
this command to define subscript characters, the previous normal-size characters are
lost.
Do not define continuous horizontal dots on the same row; the printer ignores the
second of two continuous dots.

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