Canon BJ-230 - Manual (Page 46)

The following table lists the print styles that are available in each printer
control mode.
You use DIP switch 12 to select the printer control mode. When DIP
switch 12 is OFF, which is the default, the printer uses BJ-10 mode. Set
DIP switch 12 to ON to select LQ mode. See Chapter 8, Customizing
the Printer, for more information on DIP switches.
Software and Printer Compatibility
You use software to send infomation and instructions to the printer over
the cable that connects the printer to the computer. In addition to data,
the instructions you send may include special sequences. The command
sequences tell the printer such things as how many lines to skip and
where to start printing.
Some control codes are standard throughout the microcomputer
industry and are recognized by all printers. Two examples of these are
form feed (FF) and line feed (LF).
ESCape sequesnces are unique to each printer emulation. ESCape
sequences begin with the ESCape character (ESC) followed by one or
more other characters.
The ESCape character tells the printer not to print the next character(s),
but to use the information to perform a printing control task, such as
printin in bold or underlining.
Appendix C lists the control codes and ESCape sequences the printer
recognizes in both BJ-10 mode and Epson LQ mode. The printer
recognizes control sequences in ASCII, decimal, and hexadecimal
format.
Printer Control Mode
Print Style BJ-10 Epson LQ
Italic No Yes
Emphasized Yes (via ESC E sequence) Yes (via ESC E sequence)
Double-high Yes (via ESC [ @ sequence) Yes (via ESC w sequence)
Double-wide Yes (via ESC W sequence) Yes (via ESC W sequence)
Slashed zero Yes (via ESC [ K sequence) No