Refer to the instructions below.
Note: The screens on your Macintosh will vary depending on your operating system version.

For Mac OS X 10.3 - 10.4 users:

1. Open the Print dialogue. 
   (Please refer to the instructions, "Change the printer driver settings (For Mac OS X)".)
2. Choose "Layout" from the pop-up menu.
3. If you want to enable 2-sided(Duplex) Printing, choose "Long-edged binding" or "Short-edged binding" in Two-Sided.
   If you want to disable 2-sided(Duplex) printing, choose "Off."
   
   
   
   
4. Choose "Paper Handling".
5. Choose "All pages" in Print and click Print. You can print pages on both sides of the paper.
   
   
   

For Mac OS X 10.5 or later users:

1. Open the Print dialogue. 
   (Please refer to the instructions, "Change the printer driver settings (For Mac OS X)".)
2. Choose "Layout" option from the print options pop-up menu.
3. If you want to enable 2-sided(Duplex) Printing, choose "Long-edge binding" or "Short-edge binding" in Two-Sided. Automatically the Two-Sided check box is checked.
   If you want to disable 2-sided(Duplex) printing, choose "Off."
   
   
   
   
   
4. Choose "Paper Handling".
5. Choose "All pages" in Pages To Print and click Print. You can print pages on both sides of the paper.