Two-Sided Printing Option Disappeared

[Les67]

I had no problem printing two-sided until I switched to a different HP printer.  Now the 4650 printer no longer shows the two-sided button when the "print" screen comes up.  I have tried solutions that appear in this forum and on the HP site and they haven't helped.  Based on one suggestion, I shut down the printer, unplugged it, and restarted it.  Didn't help.  I went to the touch screen on the printer, pressed copy, pressed settings, and pressed two-sided.  Didn't help.  When I open the printer driver the settings button is the only button that isn't highlighted, so I can't click on it.  I downloaded new software and it didn't make a difference.  However, during the download a pop-up screen appeared temporarily that said that the installation of an "extension" was not allowed, so I should start over.  The same thing happened when I tried again.  It's frustrating because nothing seems to work. 

[ShlomiL]

Hi,
Please follow the steps below in order to automatically print two-sided print jobs:

1. Verify the duplex-printing accessory has been installed properly. To verify this open the System Preferences and go to Print & Fax. Open the print queue of your printer. Click on Printer Setup and from the tab menu choose Driver. Verify the box next to HP Two-sided Printing Accessory (Duplexer) is checked.

2. From the file used to print click the File menu and select Print.
NOTE: The Print window might be minimized. Press on Show Details to show any available print option.

3. In the expanded Print window you will find next to Copies the checkbox for Two-Sided. Check the box.
NOTE: If the checkbox does not appear within the specific application print dialog, skip this step.

4. To select the binding type click the lowest selection box listed as the name of the program (e.g. TextEdit)
Will appear as Copies & Pages within Microsoft Office applications.

5. Select Layout from the drop-down menu.

6. Set the Two-Sided option as Long-Edge binding (Portrait), or Short-Edge binding (landscape).

You may save the settings for future use by clicking Presets > Save Current Settings as Preset... Any used preset will remain default till another preset will be used.

Regards,
Shlomi