Patent ID: 7387297

Claim:
A printing system sheet feeder apparatus comprising: an initial sheet stack comprising two or more sheets of media stacked in a vertical position which includes a top sheet and a sheet directly below the top sheet, each sheet including a leading edge and a trailing edge wherein all leading edges and trailing edges are vertically aligned; a front nudger roll positioned directly above the initial sheet stack and near the leading edge of the top sheet of the initial sheet stack, the front nudger roll in physical contact with the top sheet of the initial sheet stack, and the front nudger roll adapted to advance the top sheet from the initial sheet stack; a separation nip aligned with the front nudger roll and capable of receiving the top sheet advanced by the front nudger roll and advancing the top sheet in a direction away from the front nudger roll; and a rear nudger roll, the rear nudger roll being positioned directly above the initial sheet stack and near the trailing edge of the top sheet and adapted to advance, from the initial sheet stack, the sheet directly below the top sheet while simultaneously, the top sheet is being advanced by the front nudger roll, or the separation nip, or the front nudger roll and the separation nip, wherein the rear nudger roll is adjustably mounted or fixed to a sheet stack trailing edge guide.