HP Color LaserJet 9500 Printer series - Manual (Page 30)

http://www.hp.com/support/lj9500
28 Chapter 3 – What you can do Rev. 1.0
To print a booklet in Windows
1 Open the printer driver. (See “Open the printer driver” on page 22.)
2 On the Finishing tab, select Print on Both Sides.
3 Select Flip Pages Up, if necessary.
4 Select the booklet layout from the Booklet Printing drop-down list, and then click OK.
To print a booklet in Mac OS
Before printing a booklet for the first time, make sure that you have installed the HP Manual Duplex and Booklet software.
This software requires a custom installation and is available for Mac OS 9.2.2 and earlier.
Note Mac OS X does not have the ability to print a booklet.
1 In the software application, click the File menu, and then click Print.
2 Select Layout from the pull-down menu, and then click Print on Both Sides.
3 Select Plug-In Preferences from the pull-down menu, Print-Time Filters, and Booklet.
4 Click Save Settings.
5 Click Booklet Printing.
6 Click Format Booklet.
7 Select the Paper Size from the pull-down menu, and then click Print.