Technical Reference Guide – Command descriptions > 156
This command will be ignored if n has a value other than 
the values mentioned above.
> Additional details:
Can be used with any character pitch.
Although dot spacing remains unchanged, double width 
mode produces half as many characters per inch for any 
pitch.
Double width characters are algorithmically produced.
When Helvetia typestyle is selected with both double width 
and double height set, a separate bitmap will be used for 
the standard ASCII characters (20H – 7FH).
> Related functions:
This mode can also be set by the ESC ! n command (Epson 
mode).
S
ET
/
RESET
 
DOUBLE
 
HEIGHT
 
CHARACTERS
> Code: FS V n
> Compatibility:
ML1190 eco: EPSON LQ
ML1120 eco: EPS FX
> Function:
Characters will be printed twice as high after receiving this 
command.
> Range:
n = 00H, 30H, 80H, B0H, RESET double height printing.
n = 01H, 31H, 81H, B1H, SET double height printing.
> Additional details:
This command is available in the following print modes 
only:
– Utility/DLL Utility
– Emphasised/Enhanced
– Double Width
– LQ