Double-sided copying is a way to save paper and money. Most but not all models of Brother copy machines have the capability to do double-sided copying. In addition to the environmental benefits, printing on two sides is advantageous when printing a document that will be bound, so the document can be read like a book.
Load the documents you want to copy into the ADF tray located on top of the document cover. Make sure all the pages are evenly stacked before loading them in the tray. The pages should be flat, not be crinkled, torn, or rolled.
Use the keypad to enter the number of copies you want to make.
Press "Duplex" and then press the up or down arrow to scroll through the options and select "1sided -> 2sided L."
Press "Start" to begin copying.