CUPS default duplex option not working

[therzog]

I have print driver version 4.2.0. I'm trying to use the CUPS interface (http://localhost:631/printing) to change the default duplex option from off to "two sided." So in the CUPS interface I go into "Set Default Options" -> "Two-Sided Printing" and choose "Long-edge binding."  Now, when I go to print, the "Two-sided" checkbox is selected, but it still prints one-sided. Is there some way to make the driver respect the updated default settings?

[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).

Click Presets > Save Current Settings as Preset... Any used preset will remain default till another preset will be used.

Regards,
Shlomi