Automatic paper feeder employing a lost motion mechanism

Details Automatic paper feeder employing a lost motion mechanism Automatic paper feeder employing a lost motion mechanism

1991-11-07

1992-12-08

Olszewski, Robert P.

Sheet feeding or delivering

Feeding

Separator and conveyor

271272, 4006362, B65H 506

Patent

active

051691361

ABSTRACT:
An automatic paper feeder for feeding a sheet of paper from a paper supply bin to a platen of a printer, comprises: a paper feed roller by which an outermost one of the sheets of paper stacked in the paper supply bin is fed toward the platen while being separated from the rest of sheets of paper; at least one conveyance roller provided between the platen and the paper feed roller train, the conveyance roller receiving a forward turning power from a drive shaft of the printer through a drive gear train having a gear unit; and a one-way torque transmission member provided between the gear unit and a shaft of the conveyance roller nearest to the platen, for transmitting the forward turning powr from the gear unit to the conveyance roller shaft only when the drive shaft of the printer is rotated in the forward direction, wherein a lost motion member is provided to the gear unit and the one-way torque member for preventing the forward turning power of the drive shaft from transmitting to the conveyance roller shaft until the gear unit is forwardly rotated in a predetermined angle, after transmitting the forward turning power from the drive shaft to the conveyance roller shaft and then transmitting a backward turning power from the drive shaft to the gear unit so that the gear unit is backwardly rotated in the predetermined angle.

REFERENCES:
patent: 4523869 (1985-06-01), Martin
patent: 4927130 (1990-05-01), Tanaka et al.

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