Modular automatic document feeder for a flat bed input device

Details Modular automatic document feeder for a flat bed input device Modular automatic document feeder for a flat bed input device

1998-03-12

2000-02-08

Terrell, William E.

Sheet feeding or delivering

Feeding and delivering

271 401, B65H 522, B65H 8300, B65H 8500

Patent

active

060220120

ABSTRACT:
An automatic document feeder is constructed of three chassis. A main chassis carries the active components, such as paper pick and drive mechanisms for sequentially picking and delivering said sheets to and from a flat bed scanner, motors, and transmissions for driving said paper pick and drive mechanisms, a document backing assembly, and electronic controller equipment. Moreover, the main chassis provides a document input tray. A lower chassis forms a low height form factor output tray, using paper stiffness caused by predetermined bending to register the document sheets without having to support the full length thereof. When assembled with an upper chassis, the three chassis provide the entire paper path. The lower chassis carries an attachment hinge mechanism for mounting the automatic document feeder appropriately to a flat bed scanner apparatus. The paper loading and unloading drive mechanism provides a balance normal force from a plurality of paper drive rollers. The paper loading and unloading drive mechanism is used to lift the document backing assembly from the flat bed scanner during loading and unloading of document sheets.

REFERENCES:
patent: 4349186 (1982-09-01), Nakamura
patent: 4990952 (1991-02-01), Watanabe
patent: 5140438 (1992-08-01), Kurahashi et al.
patent: 5320436 (1994-06-01), Hock et al.
patent: 5326090 (1994-07-01), Hock et al.
patent: 5630597 (1997-05-01), Minami et al.
patent: 5686950 (1997-11-01), Hirakue
patent: 5709382 (1998-01-01), Shima

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