User`s manual

[Format]: ASCII ESC ! n

Hexadecimal 1B 21 n

Decimal 27 33 n

[Description]: Select print mode(s) using n as follows:

Bit Value Description

0 6*12/12*12

1 8*16/16*16

1 - Undefined

2 - Undefined

0 Cancel bold font

1 Select bold font

0 Cancel double height mode

1 Select double height mode

0 Cancel double width mode

1 Select double width mode

6 - Undefined

0 Cancel underline mode

1 Select underline mode

[Notice]:

• When selected double-height or double-width mode, double

size characters are printed

• When both double-height and double-width modes are

selected, quadruple size characters are printed.

• When some characters in a line are double or more height,

all the characters on the line are aligned at the baseline.

• ESC - can also turn on or off underline mode. However, the