https://community.usa.canon.com/t5/Office-Printers/MF6540-not-printing-duplex-consistantly/m-p/115571#M1104 <P>For some reason my <SPAN>MF6540</SPAN> sometimes prints on the back side of the paper, it is very hard to print on pre-printed stationery, not knowing which side to put up in the paper tray.&nbsp; It also copies like this too.&nbsp;</P><P>&nbsp;</P><P>Should I upgrade bios or drivers?</P> Mon, 22 Sep 2014 04:23:48 GMT bruceclumpner 2014-09-22T04:23:48Z https://community.usa.canon.com/t5/Office-Printers/MF6540-not-printing-duplex-consistantly/m-p/115571#M1104 <P>For some reason my <SPAN>MF6540</SPAN> sometimes prints on the back side of the paper, it is very hard to print on pre-printed stationery, not knowing which side to put up in the paper tray.&nbsp; It also copies like this too.&nbsp;</P><P>&nbsp;</P><P>Should I upgrade bios or drivers?</P> Mon, 22 Sep 2014 04:23:48 GMT https://community.usa.canon.com/t5/Office-Printers/MF6540-not-printing-duplex-consistantly/m-p/115571#M1104 bruceclumpner 2014-09-22T04:23:48Z