You can
print on both sides of the paper by selecting the
2-Sided Printing checkbox on the Main tab.
Automatic double-sided printing is only available if you have
loaded plain paper in these sizes: Letter (8.5 × 11
inches [216 × 279 mm]) and A4
(8.3 × 11.7 inches
[210 × 297 mm]).
Note: Some options
may be pre-selected or unavailable, depending on other settings you
have chosen or if you are accessing the product over a
network.