Recording sheet feeding device

Details Recording sheet feeding device Recording sheet feeding device

1992-10-26

1994-07-12

Bollinger, David H.

Sheet feeding or delivering

Feeding

Separator and conveyor

271117, 271124, B65H 500

Patent

active

053281632

ABSTRACT:
A sheet feeding device having a tray on which a plurality of sheets are stacked, includes a feeder for feeding the stacked sheets through contact therewith, a separator provided downstream in the feeding direction of the feeder for separating sheets one by one from the stack of sheets and at least a pair of conveyance rollers provided downstream of the separator for conveying the separated sheet. A detector detects the size of the stacked sheets. A pressing device presses the sheets, and a contact pressure between the feeder and the sheets is adjustable. A sheet edge detector provided downstream of the separator detects an edge of each of the separated sheet, and respective drivers drive the feeder, the pressing device and the conveyance rollers. A controller controls the driver. A table in which a plurality of variable and selectable pressure forces appliable by the pressing device are set according to a detected sheet size. The controller controls the driver according to a set value of the table.

REFERENCES:
patent: 3963339 (1976-06-01), Taylor et al.
patent: 4550903 (1985-11-01), Moore
patent: 5120039 (1992-06-01), Yamada

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