Compuprint MDP40B Programmer Manual - Manual (Page 71)

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ESC 7
Cancels Upper Control Codes. (EPSON ESC/P2)
ASCII Code ESC 7
Hexadecimal Value 1B 37
Decimal Value 27 55
This command cancels the printing of upper control codes (from 128 to 159).
ESC k
Selects LQ fonts. (EPSON ESC/P2)
ASCII Code ESC k n
Hexadecimal Value 1B 6B n
Decimal Value 27 107 n
Selects one of the available fonts in Letter Quality mode. See the following table:
n Types
0 Courier
1 Gothic
2 Courier
3 Prestige
4 Script
5 OCR-B
6 OCR-A
7 Presentor
11 Boldface
If the Draft mode is selected when this command is sent, the new LQ font will be
selected when the printer returns to LQ printing.