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IP.com Disclosure Number: IPCOM000024696D
Original Publication Date: 1981-Oct-31
Included in the Prior Art Database: 2004-Apr-02

Publishing Venue

Xerox Disclosure Journal


A pneumatic bottom feeder is disclosed that utilizes angled jets 3 in the bottom of the feeder. These angled jets lift the stack of paper and individually feed a sheet of paper from the stack. A lobe type nudger roll 4 is located at the rear of the stack and is designed so that as it turns through its half revolution, the lobe in contact with the stack separates sheets 1 and 2 by nudging sheet 1 forward. Because of the lobe roll, the roll breaks contact with the stack, thus preventing feeding of sheet 2. At completion of the half revolution, the opposite side of the lobe nudger roll is in contact with the stack and positioned to feed the next sheet. Other improvements to this concept include angling (angle A') the bottom surface of the feeder, supplying vertical jets 5 perpendicular to the bottom of the tray and applying air to the sides of the sheets in the stack.