Recirculating sheet feeder

Details Recirculating sheet feeder Recirculating sheet feeder

1990-09-20

1992-02-18

Skaggs, H. Grant

Sheet feeding or delivering

Delivering to stack and feeding therefrom

With sheet sensor for selective location

355320, B65H 522

Patent

active

050887149

ABSTRACT:
In a recirculating feeder, for example for a copying machine, a stack of sheets is placed on a placing member. A detection protrusion, which is rotatable about an axis extending along the placing member, contacts the underside of the stack. A spring urges the detection protrusion in an upward direction so that a top sheet of the stack comes in contact with a pressing member. As the top sheet of the stack is fed, sheets are returned to the placing member under the detection protrusion to form another stack of sheets. After the detection protrusion has urged the last sheet of a stack upward and this last sheet is fed, the detection protrusion cooperates with a sensor to indicate the feeding of the stack is completed. Thereafter, the detection protrusion can rotate to come in contact with the underside of another stack of sheets and the operation can be repeated.

REFERENCES:
patent: 4433836 (1984-02-01), Kulpa et al.
patent: 4637598 (1987-01-01), Bouwens et al.
patent: 4639126 (1987-01-01), Bushaw et al.
patent: 4869488 (1989-09-01), Hirota et al.
patent: 4934683 (1990-06-01), Ueda et al.
patent: 4980729 (1990-12-01), Okamoto

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