Hp4350 prints multiple copies when only 1 requested

There may be a problem with the print driver. Try deleting the printer from your computer and then re-adding it. Print driver can be downloaded at www.hp.com. in case you have lost your installation CD. Good luck !

Select the simplex/duplex mode.
1 sided - 1 sided
1 sided - 2 sided
2 sided - 2 sided
When using 1 sided to 2 sided the originals must be even

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.

when you hit print there is windows that will pop up, there you can change the number of copies to print at a time. if you don't change the value from 1 to another number then you can only print one copy at a time. once you are done make sure to change the value set by you to 1 to avoid printing multiples unneeded copies in the future

The best thing to do as a starter is:

1. uninstall the print driver THEN
2. download the latest version from the manufacturer and install it

This rules out the driver as the cause of the problem
1. Go to printers
2. Right Click on the Printer HP Laserjet 1320
3. Click on Printing Preferences
4. Click on Advanced
5. Double Click (to open) on Paper Output
6. Ensure that COPY COUNT is set to "1"

If it is already set to one, trick the system a little:
1. set it to 2 and save that setting
2. then go back in and set it to 1

Good luck

that problem is easily solvable with a driver update.

HP has released a driver package do fix that issue

Go to "printers and faxes."
Right click on your printer and select "Printing preferences."
Select "Advanced" tab
Double click "paper output"
If "Copy count=2" then change to 1 and apply
IF IT ALREADY IS SET TO 1 THEN:
Set "copy count=2" then APPLY
Repeat the above and now set "copy count=1"

The process of setting and resetting the copy count fixed my issues.

Look for a small "Collate" box and make sure it is checked. That way it will print each set in order.

Windows may have eaten its baby again- that is, the driver for that printer.
Open the Control Panel, then Printers and Faxes, delete any listing for that model of printer, make sure the printer is on and connected, then reboot your system. This will force Win to 'find' the printer and install an uncorrupted driver for it.
(=Plug and Pray) 

I guess you are using word. In that case the default driver you use and comes standard with windows is flawed. Download a new one from HP.