Hopper for feeding documents automatically into a sorter. The hopper employs rotating eccentric rollers protruding through slots in the bottom of the hopper to drive documents in a direction perpendicular to the rollers across the hopper against front or first wall. A rotary roller extending through a slot along this wall is used to urge the ends of the documents downward and forward towards feeder nudger belts which feed them to the sorter. A spring biased flag pushes against one end of the stack of documents to urge them in the same direction against the feeder nudger belts.