Why can I not copy 2 sided paper

A few things come to mind here…

First of all, can you post a copy of the guide for reference?

A few things we need to check:

• Are you using the glass copier or the ADF tray to load the documents you’re copying?
• Are you actually copying 2 pages through the printer, or just 1 double-sided page? Depending on the model, we may need to specify 2-sided copying to ensure it scans both sides (verify 2-sided scanning is available, it may not be supported on your model)
• Is the page you’re copying to being fully inserted into the feeder? (ie. the printer’s not registering the paper feed because it hasn’t been inserted far enough?)
• Are they any odd noises / grinding sounds / jamming / other obvious hardware issues w/ the unit?

I have had all 4 of these happen to myself at different points.

Assuming nothing is physically damaged it’s more than likely a procedural error (ie. “user issue”), however if it’s a new out-of-box printer it’ll possibly need a firmware update as well to bring it up to speed.

from http://h10032.www1.hp.com/ctg/Manual/c04...

Make a 2-sided copy

1. Load the original print side up into the document feeder, or load the original print side down on the right front corner of the scanner glass.

2. Specify number of copies and settings.

● From the Home screen, touch Copy .

Flick to the desired number of copies.

● If the value for the 2–Sided option is 1:1, touch to select 1:2.

>>> Are you selecting 1:2?

● Touch (Settings), scroll through the options, and then touch Resize to make sure Actual is selected. NOTE: The 2-sided function does not work if the Fit to Page option is selected.

>>> Is “Fit to Page” selected?

● From the Settings screen, specify paper size, paper type, quality, or other settings.

● Touch (Back) to return to the Copy screen.

3. Touch Black or Color to start the copy job.

4. When prompted, load the second original and touch OK.

>> Is it prompting for you to insert the second doc, or are we removing/inserting something prematurely?

More detail about the specifics of what you’re trying and/or step-by-step description of what’s happening would be helpful.

Best of luck.