Samsung M262x Benutzerhandbuch (en)

Using advanced print features
3.  Special Features
Double-sided Printing
Double-sided Printing 
Print on both sides of a sheet of paper (duplex). Before printing, decide how you want your document oriented. 
You can use this feature with Letter, Legal, A4, US Folio or Oficio sized paper 
If your machine does not have a duplex unit, you should complete the printing job manually. The machine prints every other 
page of the document first. After that, a message appears on your computer.
Skip Blank Pages
 feature does not work when you select the duplex option.
We recommend not to print on both sides of the special media, such as labels, envelopes, or thick paper. It may cause a paper 
jam or damage the machine.