Canon BJ-20 User Manual page 71

Set font and character pitch.
FORMAT ESC I n
DEC 27 73 n
HEX 1B 49 n
Comment
n Font and Pitch
0 Draft 10 cpi (default)
2 Letter Quality 10 cpi
3 Letter Quality Proportional
4 Down-Load Draft 10 cpi
6 Down-Load Letter Quality 10 cpi
7 Down-Load Letter Quality Proportional
8 Draft 12 cpi (created from Draft 10 cpi)
Letter Quality Prestige 12 cpi
10
(or Letter Quality 12 cpi in Canon BJ-130e emulation)
Down-Load Draft 12 cpi
12
(created from down-Load Draft 12 cpi)
14 Down-Load Letter Quality 12 cpi
16 Down-Load Draft 17cpi (created from Draft 10 cpi)
18 Letter Quality 17 cpi
20 Draft 17 cpi (created from Down-Load Draft 10 cpi)
Down-Load Letter Quality 17 cpi
22
(created from Down-Load Letter Quality 10 cpi
Else Command ignored
The Internal fonts are used if the characters are not downloaded.
Set the DIP switch 10 to ON to enable down load.
Select Sub-Sup Script Mode
Select or cancel printing of characters in the tip (superscript) or bottom
(subscript) area of the line.
For subscript mode: