Double feeding prevention in a bottom sheet document feeder

摘要: A multifeed resistance system 90 which is a simple and low cost modification of known non-retard type bottom sheet separator/feeders, especially vacuum feeder 17 in the stack 14 sheets fluffed by an air knife 18 front area 98 pulled down fed out from with corrugating belt there tray 16 underneath 14. limited special resisting or retarding member 92 under rear has been found to be effective multifeeds, yet not interfere sequential feeding. One more areas double feeding overly upstream portion supporting surface 15 stacking 16. This oriented (one-way) fiber mat, cloth pad material, fibers 94 are angled (oriented towards 16). These engage trail edge second-from-the-bottom 96 resist its downstream movement as bottom-most being initially separated out.