First of all make sure you have the optional DU-410 duplex option on your machine. If you do not have this optional accessory installed you can not automatically duplex. If you are sure you have this option then go to the printers properties screen on your computer and you should have an advanced tab which has the options listed. Make sure the duplex option is installed. Once you have checked these 2 things you should have your question answered. Good Luck and Thank You for using Fixya.
Answers & Comments
First of all make sure you have the optional DU-410 duplex option on your machine. If you do not have this optional accessory installed you can not automatically duplex. If you are sure you have this option then go to the printers properties screen on your computer and you should have an advanced tab which has the options listed. Make sure the duplex option is installed. Once you have checked these 2 things you should have your question answered.
Good Luck and Thank You for using Fixya.