1. Put multiple copies of documents face up in the upper paper feeder.
2. Press the copy key on the control panel.
3. Press the menu key on the control panel.
4. When "Copy Function" is displayed on the screen, press the OK key.
5. Press the left/right arrow on the control panel to select both sides, and then press OK.
6. Press the left/right arrows on the control panel to select Single → Double-sided, and then press OK.
7. After the above settings are completed, press the Start button on the control panel to realize the double-sided copying function.