HP Deskjet 6540 Color Inkjet Printer - Manual (Page 156)

If a two-sided printing accessory is not attached to the printer or you are printing on
an unsupported paper type, use manual two-sided printing .
Guidelines
Do not exceed the In-tray capacity: up to 150 sheets.
Printing
To print a booklet, follow these steps:
1. Open the Print dialog box.
2. Select the Layout panel.
3. In the menu, click Booklet.
4. In the Print On drop-down list, click the appropriate paper size.
5. If you want the pages to be ordered from right to left, select the Right to Left
check box.
Note: For most languages, leave the Right to Left check box cleared.
6. Select any other printer setting that you want, and then click Print.
After the first side of the page is printed, the printer pauses while the ink dries.
When the ink is dry, the paper is pulled back into the duplexer and the reverse
side of the page is printed.
Note: Do not remove the paper from the printer until both sides of the page
have been printed.
HP Deskjet 6500 series printers User's Guide
156