Document feeder

Details Document feeder Document feeder

2006-11-08

2010-12-28

Yan, Ren (Department: 2854)

Electrophotography

Document handling

Original

C399S371000, C399S373000

Reexamination Certificate

active

07860445

ABSTRACT:
A document feeder includes a bidirectional feed path having both ends connected to predetermined positions of the bidirectional feed path, respectively. A document is fed from a downstream side of the image reading position to an upstream side with leading end and trailing end being reversed. The driving force is not transmitted when the rotation of the rotating member of the driving source is switched from one direction to the other, while the driving force is transmitted when an actuator is operated based on the driving system being rotated in the other direction. The actuator is actuated when the driving system is rotated in the other direction and the document is drawn in the bidirectional feed path. If the rotated amount of the driving source during the actuation of the actuator is less than a predetermined value, the actuator is actuated by a predetermined period.

REFERENCES:
patent: 4500086 (1985-02-01), Garavuso
patent: 5384631 (1995-01-01), Matsunami
patent: 6161831 (2000-12-01), Kusakabe et al.
patent: 6209861 (2001-04-01), Kakuta et al.
patent: 2004/0207708 (2004-10-01), Ohashi et al.
patent: 8-85649 (1996-04-01), None
patent: 11-263539 (1999-09-01), None
patent: 2004315166 (2004-11-01), None

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