HP 220240 - Manual (Page 117)

Table 4–18: DUPLEX Menu Features and Values
Feature Values Description
duplex OFF 1 Selects the simplex mode of operation. Paper is
printed on one side in simplex mode.
ON Selects the duplex mode of operation. Paper
is printed on two sides in duplex mode and
delivered to the top output tray.
1 Factory default setting.
4–32 Operator’s Guide