Printing multiple copies

I assuming you mean you get 2 prints when you only asked for one. Looks like the driver default settings are set to 2 copies.
If you can use the copy facility and print one copy that sort of eliminates the printer. The problem must be further up stream towards the computer sending the print.
You also. If he like to remove the print driver and reinstall it, the default must always be set to 1 copy.

umm if I understand correctly you want one document printed same document on both sides select double side printing the where it ask for how many copies you want send to or how many of the documents you want in increments of two ex. 2=1 double side copy,4=2 double sided ,6=3double sided

If you don't have a manual, you can find one here

My guess is either on the printer or the driver. Skimming the manual, it doesn't seem that you can set the default number of pages printed per sent print job on the printer, but that is something I would look into. This is a nice office printer, perhaps the printer is set to print multiple copies of everything it is sent. You could determine if it is the printer or driver/computer by printing to it from another computer.

If it is the computer, go into the control panel and select the properties for this printer. In there, check if the number of copies is improperly set to 5. This would happen for every print job sent from this system.

Does it print 5 copies of documents sent from different programs (i.e. Web Page, Word, Excel)? Quite possibly, one time you set it to print 5 copies and that application retained that as default. In that application, rather than clicking "print" click "printer setup" and look through the settings to see if it is requesting multiple copies.

I am 95% sure one of these three solutions will solve your problem.

You may be low on toner

How do I turn off the ink level system on my HP all in one C6350 printer?

Instead of pressing the start button to print, you need to press the small ON/OFF button. The start button works to copy/scan. But to print, you will need to turn the printer on first. Once the printer is on, the computer should recognize it fine and allow you to print from your applications.

Please Re-install the printer's driver
http://h20000.www2.hp.com/bizsupport/TechSupport/DriverDownload.jsp?prodNameId=468006&lang=en&cc=us&taskId=135&prodTypeId=18972&prodSeriesId=468002

After spending a lot of time on the net looking for an answer I decided to spend some time to see what was different betweent the computers. It turns out that the 2 computers that I was having the problem on had Zone Alarm installed and the 3rd computer that it was working on did not. So I dug around in Zone Alarm and marked every HP software item as allowed. I then rebooted the computer and submitted a test page to the printer. Low and behold 1 copy as I wanted. I proceeded to test it some more and now am only getting one copy when I ask for one. The problem appears to be that Zone Alarm was messing it up. I still have Zone Alarm running, I just needed to mark HP as an accepted program under every listing in Zone Alarm.

Uninstall then Reinstall the software. Support link below:

http://h10025.www1.hp.com/ewfrf/wc/product?product=3192753&lc=en&cc=us&dlc=en〈=en&cc=us

Duplexor printing is the only feature which HP All-In-One printer offers, where you can print in both sides of the paper from your computer if you have multiple pages to print.

But SORRY you cannot make a duplex copy on the stand alone machine itself.

But still you can scan and print the same on the duplexor.

For Scanning Multiple pages in one Folder:

All you need to do is if the All-In-One Printer driver and software is completly installed in your computer, Then you should have a icon in your desktop as HP Solution Center / Go to
Start> All Programs> HP> HP Solution Center>
Then click on Scan document> The in the option where it says Where do you want to send the scanned documents> Click on the drop down and select PDF / Word then make syre you
have selected Show preivew Box> Then click On Scan>
After it shows the preivew> Click on I Accept> NOW IT WILL ASK IF YOU WANT TO SCAN ANOTHER DOCUMENT> Click yes on this and replace the document> and the click on
NEW SCAN> and follow the same steps to scan multiple pages, till you have finished scanning all and then> When it asks if you want to scan another document> Click on No.

And then print the same through the duplexor

Good Luck