OKI 791 User Manual

Left Margin Set

Right Margin Set

Auto Justification

Unidirectional Print On/ 
Off

One-line Unidirectional 
Printing

Backspace

Delete One Character

Set 

1

/

6

-inch

Line Spacing

Set 

1

/

8

-inch

Line Spacing

ASCII: ESC l n
Dec: 27 108 n
Hex: 1B 6C n

ASCII: ESC Q n
Dec: 27 81 n
Hex: 1B 51 n

ASCII: ESC a n
Dec: 27 97 n
Hex: 1B 61 n

ASCII: ESC U n
Dec: 27 85 n
Hex: 1B 55 n

ASCII: ESC <
Dec: 27 60
Hex: 1B 3C

ASCII: BS
Dec: 8
Hex: 08

ASCII: DEL
Dec: 127
Hex: 7F

ASCII: ESC 2
Dec: 27 50
Hex: 1B 32

ASCII: ESC 0
Dec: 27 48
Hex: 1B 30

Sets left margin n character spaces from 
printhead home position; must be at least 5 
spaces (5 cpi) to left of right margin.
n=0 to 255
n=0: home position

Sets right margin n character spaces 
from printhead home position; must be 
greater than the left margin.
n=1 to 255
n=0: command ignored

Justifies text according to the value of
n:
n=0: Left
n=1: Center
n=2: Right
n=3: Full (left & right)– use carriage
return only at end of paragraph.

Turns unidirectional (left to right only) 
printing on and off.
n=1: Unidirectional printing On
n=0: Unidirectional printing Off (nor-
mal bidirectional printing)

Turns on unidirectional (left to right) 
printing for one line.

Prints data in print buffer and moves 
one character to the left according to the 
current character pitch.

Deletes last character in print buffer.

Sets line spacing of 

1

/

6

-inch (6 lines per 

inch). This is standard typewriter spac-
ing.

Sets line spacing of 

1

/

8

-inch (8 lines per 

inch).