I’ve been frustrated by the lack of helpful information out there on how to print double-sidedly on an HP Inkjet printer; or, for that matter, any printer that pulls in paper and puts it out above the input tray. I’ve developed a failsafe method for double-sided printing on these kinds of printers, and I’ve made a little reference sheet on how to do it.
Take a Look
It’s a half-letter PDF you can keep handy. I specifically designed it for use with a Mac, but I’m sure you can adapt the instructions for Linux or (*gag*) Windows.
Taldar 