Sheet feeding or delivering – Feeding – Separators
Patent
1997-04-10
1999-04-06
Bollinger, David H.
Sheet feeding or delivering
Feeding
Separators
B65H 352
Patent
active
058907106
ABSTRACT:
A document feeder apparatus is provided for feeding documents along a document feed path. The document feeder apparatus comprises a picker mechanism for picking a number of documents from a stack of documents stored in a hopper and moving the picked documents along the document feed path. An advance mechanism includes an advance roller having a longitudinal central axis and being rotatable about its longitudinal axis. The advance roller has an outer circumferential surface which is engageable with one side of the picked document moving along the document feed path. A retard mechanism includes an endless retard belt having an outer major side surface which is engageable with the opposite side of the picked document moving along the document path. The outer major side surface of the endless retard belt and the outer circumferential surface of the advance roller cooperate to define at least a portion of the document feed path therebetween. Tension is applied to the endless retard belt such that a relatively constant pinch pressure is applied to the picked document while the picked document is moving along that portion of the document feed path between the outer major side surface of the endless retard belt and the outer circumferential surface of the advance roller.
REFERENCES:
patent: 3709482 (1973-01-01), Nelson et al.
patent: 3734490 (1973-05-01), Parks
patent: 3934869 (1976-01-01), Strobel, Jr.
patent: 4556209 (1985-12-01), Tsubo
patent: 5033729 (1991-07-01), Struthers
patent: 5730439 (1998-03-01), Salomon
Phillips Robert W.
Seymour Kenneth S.
Bollinger David H.
Chan Michael
NCR Corporation
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