Document sheet feeding mechanism

Sheet feeding or delivering – Feeding – Separator and conveyor

Patent

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Details

271116, 271270, B65H 506

Patent

active

060243570

ABSTRACT:
An automatic document feeding device has a document feeding roller which feeds a document from a stack to a conveying roller which conveys the document for further processing. The document feeding roller has intermittent motion which feeds the conveying roller with three different speeds: first, at a first speed for feeding the document; then, at a speed faster than the first speed as dragged by the document; and finally, a temporary stop. The temporary stop provides sufficient interspace between the successive documents so that a correct pagination signal is generated. The intermittent motion is provided by a power transmitting component which is coupled to the document feeding roller to speed it up when engaged and is decoupled during the stop interval. The power transmitting component can be coupled to the document feeding roller (1) by kicking a pin on the shaft of the transmitting component with one or more sharp edge of the document feeding roller, (2) by impacting a flat surface on the shaft of the transmitting component with on a V-shaped protrusion attached to the document feeding roller, and (3) by impacting a flat surface on the shaft of the transmitting component with another flat surface attached to the document feeding roller.

REFERENCES:
patent: 5116038 (1992-05-01), Kim
patent: 5240239 (1993-08-01), Kim
patent: 5480132 (1996-01-01), Kiyohara et al.

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