Duplex printing in HP 2420dn on Mac OS X Lion 10.7.4

The 1018 is not supported by HP with the Mac OS Mountain Lion. I found this on an HP forum and it worked for someone else. You could try this:

Hi,
Thank you for posting,
Unfortunately, HP laserjet 1018 is not suported in Mac OS X 10.8 Mountain Lion. How evere you can use the builtin drivers that goes along with the operating system and select teh driver of another printer and check.
Connect the printer to the computer and then go to System Preferences and click on Print and Fax. In the Print Fax window, lick on the Plus sign and you will find the printer, please select the printer and then under print using click on the drop down and click on "Select print Software" and in the list, please select HP Laserjet 1015 pr HP Laserjet 1022 and check.
If you don't find these printers in the list, please download and install the latest print driver version 2.12 from the apple web site using the link below.
http://support.apple.com/kb/DL907
After downloading and install the update, please try the steps given above.

Make sure the Automatic Duplexing option is enabled:
Enter Control Panel then Devices and Printers.
Right click the printer icon, then Printer Properties.
Click the Device Settings tab.
Set the Automatic Two-Sided Duplex Accessory as installed and click OK to save.
Now Automatic Duplexing should become available.
My LaserJet 1320 will no longer do duplex printing with Windows 8

Hi Franziska,

HP has not yet released Driver software for your MAC LION however there is a solution for this.
In order to print 2 sided ( duplex printing ) you need to install drivers and it is possible by doing Apple Update.
The link below will give you more details information of how to install the drivers.

MAC LION Driver Update

Once you have done the Update and installed the drivers, you will find the Printer name in Printers list.
Click on Printer Utility and under Layout you will find options to choose 2 sided printing

Regards,
Sean

You need to go into the print driver on your Windows machine and go to the Device settings tab. One of the settings is to set whether the unit has a duplexer or not. It does not always set automatically.

Hello, Have you checked the print driver properties, Under the device settings to be sure the duplexer has been enabled.

The only way to duplex print on a standard 2420 is to print the first page, then take that page and re-insert it into the paper tray face up. Then print page 2 onto the back of page 1. If you want to automatically duplex print then you need a 2420DN printer which has the duplexing paper path as well as the formatter board with the duplex firmware.
Good Luck and Thank You for using Fixya.

HP 2015n is not able to print duplex (both sides). HP printers, which have duplex print have "d" after the product name/number - like HP2015dn, 2055dn.

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.

Hi,

I had the same problem. It was due to incorrect properties in the printer settings.

1. Go to Start >> Printers and Faxes
2. Right-click on the HP 2420 printer and select Properties.
3. Go to the Device Settings tab.
4. Under Installable Options, set Duplex Unit to Installed.

Also, make sure that the Printing Preferences are set to Two Sided Printing:

1. Go to Start >> Printers and Faxes
2. Right-click on the HP 2420 printer and select Printing Preferences.
3. Go to the Printing Shortcuts tab.
4. Select the Two Sided (Duplex) Printing option.

That should do the trick.

HP - please change your setup so that this is set by default!!

Brian Z

You can't print on both sides you miss • Automatic duplex unit for two-sided printing" you're model doesn't have it.
Read below:

Shown at left:
HP LaserJet 9000 series, base unit— LaserJet 9000
base unit =
• 50 ppm print speed
• first page out in less than 8 seconds
• built-in RIP-once technology
• 300,000 pages-per-month duty cycle
• 64 MB memory
• EIO expansion slots




LaserJet 9000n = base unit +
• HP Jetdirect 610n (EIO) internal print server for Ethernet 10/100Base-TX
• 100-sheet multipurpose tray
LaserJet 9000dn = base unit +
• HP Jetdirect 610n (EIO) internal print server for Ethernet 10/100Base-TX
• 100-sheet multipurpose tray
• Automatic duplex unit for two-sided printing


LaserJet 9000hns = base unit +
• HP Jetdirect 610n (EIO) internal print server for Ethernet 10/100Base-TX
• Automatic duplex unit for two-sided printing
• 2000-sheet input tray
• 3000-sheet stapler/stacker