Print From Your Computer : Macintosh Printing (Mac OS X 10.4)

Print Double-Sided
With the built-in duplexer (some models only), you can print on both sides of the page automatically.
Note:
Make sure you use a paper type that is compatible with the duplexer.
1.
Select Output Settings from the pop-up menu.
2.
Select a binding option for the Two-sided Printing setting.
Note:
If the options for this setting are grayed out, make sure you have selected Plain Paper/Bright White Paper as the Media Type setting. If you’re printing on letter-size paper, select A4 as the page size, then select the two-sided printing options you want. Then change the paper size back to Letter.
3.
4.
Click  Adjustments to view more options.
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