Sheet feeding apparatus

Sheet feeding or delivering – Special articles – Envelope

Patent

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Details

271114, 271118, 271122, B65H 500

Patent

active

060420995

ABSTRACT:
A sheet feeding apparatus capable of separating and feeding sheets each having a flap like an envelope. In the sheet feeding apparatus, when stacked sheets are delivered by a pickup roller supported liftably, and separated one by one by a feed roller for rotating in a sheet feed direction and a retard roller for rotating in an opposite direction to the sheet feeding direction, the pickup roller is moved up and down a plurality of times until a flap of the delivered sheet passes between the feed roller and the retard roller, which makes it possible to prevent buckling of the sheet.

REFERENCES:
patent: 5172899 (1992-12-01), Tajima
patent: 5462267 (1995-10-01), Hori
patent: 5501444 (1996-03-01), Yukimachi et al.
patent: 5775686 (1998-07-01), Miyake
patent: 5860645 (1999-01-01), Tomura et al.
patent: 5882002 (1999-03-01), Kamei et al.

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