Have a hp laserjet 4350 network printer and have select print on both sides check on the printer preferences and in the finisher tabs. but still doesnt not print on both sides.

Hi

If you want to set Print on Both Sides (duplex) as the default setting for all print jobs (even single page jobs) use the following steps.

1. Click Start , Printers or Printers and Faxes from the Microsoft Windows desktop.
2. Right-click the HP Color LaserJet 2605dn_2605dtn and select Printing Preferences (Properties in Microsoft Windows 2000).
3. Click the Finishing tab.
4. Select Print on Both Sides under the Document Options section.
5. Click OK to save the setting and close the Printing Preferences window.
6. Close the Printers or Printers and Faxes folder.

Note:In this scenario, all print jobs, even single print jobs, will be treated as Print on Both Sizes (automatic duplexing) for media that is supported by the duplexing unit. For media that is not supported by the duplexing unit, the job will be treated as Print on Both Sides (Manually) (manual duplex).

There is no driver for win 7, although if you are running on windows 7 32bit there is a work around. Download the software for windows vista 32 bit for the 2840.

If you are using Windows:

1. Click on Start => Settings => Printers and Faxes
2. Locate your printer's name and right click on it and click "Printing Preferences"
3. Under the "Main" (General tab in some other printer models) Tab, and under "Paper Options" group, select the settings for "Paper Type" Paper Size"
4. Click "Apply" and the click OK.
   

Your values here will be the default values loaded when you click the print command in any programs in your computer.

Make sure the manula paper feed slot is closed.
Access Printer Properties or Printing Preferences
Select the Finishing Tab
Select Print on Both Sides
Select OK
Then print the document(s)

Go into the control panel, select the printer, select printing preferences, select finishing, put a checkmark in box where it says "print both sides"

Don't set by using the "Print" option.
Go to [Start]
[Printers and Faxes]
right-click on the HP printer entry
! Don't select "Printing Preferences"! from there
Select [properties]
Select [Advanced] tab
Select [Printing Defaults]
[Advanced}
(I know, the screen looks the same, but it functions differently this way)
Change paper size to "Letter"
[OK, OK, OK]
*done*

Your Printer Preferances is probably set to 2... solution is

Go into Control Panel > Printers > right click on the 4350 and choose Properties.

Look for Printing Preferances button near the bottom and click it.
Choose the Advanced tab and make sure Copy Count is set to 1

Sir, the Hp LaserJet 2015n printer CANNOT automatically do duplex printing since the printer does not include mechanism and paper storage areas to cycle the paper through the printer a second time and print on the reverse side. Manual duplex printing can be done as follows: Choose duplex printing and remove all sheets after the printing is complete. Turn the sheets over while preserving the orientation and insert them in the paper feed path. I have an HP 1020 laserjet printer which is similar to the 2015.

start
settings
printers&faxs
open printer properties
tick mark print on both sides

Set to Print directly to printer.