HP 2420 - Manual (Page 217)

To print a multiple-page document, follow these steps:
1 Select the Print on Both Sides (Manually) check box.
2 Click OK. The even-number pages of the document print.
3 When the control panel shows the MANUALLY FEED OUTPUT STACK message, insert the
stack of media (on which the even-number pages have been printed) as indicated in the
following figure.
Figure 4-15 Print on Both Sides Instructions
When you have completed the steps that appear in the dialog box, the second half of the print job
prints on the back side of the stack of media. The driver does not require the application to
specifically support odd- and even-page printing, because the driver coordinates this function.
Flip Pages Up
The Flip Pages Up check box, enabled only when Print on Both Sides is selected, is used to
specify the duplex-binding option. By default, the Flip Pages Up check box is not selected. The
following table demonstrates the results of selecting this box, depending on the media orientation
selected on the Finishing tab.
HP PCL 6, HP PCL 5e, and PS emulation unidriver features 201
HP unidrivers