HP LaserJet 3020 All-in-One Printer - Manual (Page 54)

7. Gather the printed pages, turn the printed side down, and straighten the stack of paper.
8. Place the pages from side one in the input tray again. Side one should be facing down
with the top edge feeding into the device first.
9. Click OK (on the computer screen), and wait for side two to print.
10. Fold and staple the pages.
44 Chapter 3 Printing ENWW