Toshiba E-STUDIO2000AC Printing Manual page 151

4.OTHER PRINTING METHODS
 Duplexing
The current duplex mode can be specified using the following options.
Option Value
simplex
duplex lduplex
duplex_long
duplex=long
hduplex
sduplex duplex_short
duplex=short
vduplex
If this option is not specified, the default value "simplex" will be used.
It is not necessary to specify duplexing for Booklet Mode (sduplex). Setting duplexing separately can override the
booklet mode setting for duplexing.
Example: The command to specify long edge duplexing is "lp -o duplex <filename>".
Alternate Value
Turn duplexing off.
Turn duplexing on with long edge binding.
Turn duplexing on with short edge binding.
Description
Printing From UNIX/Linux 151