Datamax-O'Neil APEX Series Programmer’s Manual - Manual (Page 10)

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This command (ESC K n CR) must be sent prior to any printable characters on the line in order to take effect.
Example 1: The following escape sequence set the pitch to 12 CPI (Courier Font):
Escape Sequence: ESC K 1 CR
Hexadecimal: 1B 4B 31 0D
Decimal: 27 75 49 13
Example 2: The following escape sequence set the pitch to 25 CPI Verin Font:
Escape Sequence: ESC K 1 1 CR
Hexadecimal: 1B 4B 31 31 0D
Decimal: 27 75 49 49 13
Select Character Pitch: Mode 2 ESC k n
This command is used for backward compatibility when Legacy or Factory fonts are selected. The command sets the font size
based on the number of character per inch. The parameter n can have the following values:
Character Pitch/Font Character size Columns Per Line
n
APEX 2
APEX 3
Andes3
APEX4
0 ~13 cpi Rotated / Courier mode 0 16 x 14 24 (rows/line) 36 (rows/line) 52 (rows/line)
1 ~12 cpi Normal / Courier mode 1 16 x 23 24 36 52
2 ~16 cpi Normal / Courier mode 2 12 x 23 32 48 69
3 ~19 cpi Normal / Courier mode 3 10 x 23 38 57 83
4 ~21 cpi Normal / Courier mode 4 09 x 23 42 64 92
5 ~24 cpi Normal / Courier mode 5 08 x 23 48 72 104
6 ~10 cpi Normal / Monospace 821BT 20 x 23 19 28 40
7 ~20 cpi Normal / Monospace 821BT 10 x 23 38 57 80
8 ~20 cpi Bold / Monospace 821BT 10 x 23 38 57 80
9 ~20 cpi Short / Monospace 821BT 10 x 18 38 57 80
This command (ESC k n) must be sent prior to any printable characters on the line in order to take effect.
Example: The following escape sequence set the pitch to 12 CPI (Courier font):
Escape Sequence: ESC k
1
Hexadecimal: 1B 6B 31
Decimal: 27 107 49