36 Phaser 2135 Color PrinterAutomatic 2-Sided Printing From thePaper TrayAutomatic 2-sided printing is available from all trays; it is notavailable from the Multi-Sheet Bypass Feeder. To use automatic2-sided printing, the duplex option must be installed in the printer.For best results with 2-sided printing, use 90 g/m 2 (24 lb. bond) laserpaper.Automatic 2-sided printing is available for all paper sizes except A6.Use only plain paper or heavy paper. Paper weight must be between75-120 g/m 2 (20-32 lb. bond).NoteSee Manual 2-Sided Printing (page 39) for information aboutduplexing heavier paper weights.For best results with automatic 2-sided printing, do not use heavytoner coverage on the even-numbered pages of your print job.CautionUse only laser bond paper for automatic 2-sided printing inthe Universal Tray. Do not use any specialty media (such asglossy coated paper) to print automatic 2-sided printing.Damage caused by using unsupported media for 2-sidedprinting is not covered by the printer’s warranty. Load 75-120 g/m 2 (20-32 lb. bond) paper in the UniversalTray. The front side is face-up in the tray.2-Sided Prints