How do I print on both sides of a page (duplex printing) with the HP Deskjet 1050?

The printer does not support automatic duplex printing, but you can print manually on both sides. First print only odd pages, then remove the printed pages from the output tray, reload them into the input tray with the blank side facing up, and then print only even pages. This option is found in the Print Pages drop-down menu in the Advanced settings. (Pages 12 and 15)