Compuprint 9058 Programmer Manual - Manual (Page 38)

EPSON/IBM Mode
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ESC P
Selects 10.5 point, 10 cpi. (EPSON)
ASCII Code ESC P n
Hexadecimal Value 1B 50 n
Decimal Value 27 80 n
This command selects 10.5-point, 10-cpi character printing. If you change
the pitch during proportional mode (selected with the ESC p command)
the change takes effect when the printer exits proportional mode.
ESC P
Sets or cancels proportional printing. (IBM)
ASCII Code ESC P n
Hexadecimal Value 1B 50 n
Decimal Value 27 80 n
This code is a terminator code; when received it causes all data in the
print buffer to be printed out. Then if n parameter is equal to 1, the
subsequent data is printed in proportional mode. If n parameter is
equal to 0, proportional mode is reset.
If the any horizontal spacing command is sent to the printer when
the proportional printing is set, the command will be stored and will
be activated as soon as the proportional printing will be reset.
ESC p
Sets or cancels proportional printing. (EPSON)
ASCII Code ESC p n
Hexadecimal Value 1B 70 n
Decimal Value 27 112 n
This command selects the proportional or fixed spacing according to
the following values: