I am looking for a Lexmark inkjet all-in-one device that has a duplex automatic document feeder ADF. That is, I want it to be able to automatically scan both sides of an input document that has print on both sides. It seems pretty easy on Lexmark's website to find which devices are capable of automatic 2-sided or duplexed printing, but I can't find any information on which ones, if any, will automatically scan both sides of a 2-sided incoming document coming in from the automatic document feeder. Anyone?