Datamax-O'Neil APEX Series Programmer’s Manual - Manual (Page 13)

7
Reverse Print ESC U n
The reverse print command enables the user to print white letters on a black background .Reverse printing begins with the
characters following the command.
n Selection
R Reverse printing ON
n Reverse printing OFF
Note that on power up the printer defaults to reverse printing off.
Example1: The following escape sequence will enable the reverse printing mode.
Escape Sequence: ESC U R
Hexadecimal: 1B 55 52
Decimal: 27 85 82
All characters following this command will be reverse printed. The reverse printing command is terminated either by the Esc U n
command or by cycling the printer power.
Example 2: The following escape sequence will disable the reverse printing mode.
Escape Sequence: ESC U n
Hexadecimal: 1B 55 6E
Decimal: 27 85 110
Right to Left and Left to Right Printing ESC F n
This command causes the printer to change the direction in which characters are printed. The printer direction default mode is
set to Left to Right.
n Selection
R Right to Left
L Left to Right
Note that on power up the printer defaults to left to right printing mode.
Example1: The following escape sequence will enable the right to left printing mode.
Escape Sequence: ESC F R
Hexadecimal: 1B 46 52
Decimal: 27 70 82
All characters following this command will be printing right to left printed. The right to left printing command is
terminated either by the Esc F L command or by cycling the printer power.
Example 2: The following escape sequence will disable the left to right printing mode.
Escape Sequence: ESC F L
Hexadecimal: 1B 46 4C
Decimal: 27 70 76