Sheet separator for an automatic document feeder

Details Sheet separator for an automatic document feeder Sheet separator for an automatic document feeder

2006-05-23

2006-05-23

Walsh, Donald P. (Department: 3653)

Sheet feeding or delivering

Feeding

Separators

C267S154000, C267S155000, C188S067000, C271S124000, C271S125000

Reexamination Certificate

active

07048271

ABSTRACT:
A sheet separator for an automatic document feeder of the invention is capable of separating an outmost sheet from a stack. The separator includes a separating roller driven by a driving device, a friction roller, a first shaft, and a force-applying mechanism for pushing the separating and friction rollers against each other. The friction roller has a first rotating state, in which the friction roller is driven by the separating roller, a stationary state when the separating roller feeds a first sheet, and a second rotating state, in which the friction roller is driven by a second sheet fed by the separating roller. The first shaft is inserted into the friction roller to provide a damping torque for stopping the rotation of the friction roller.

REFERENCES:
patent: 4208046 (1980-06-01), Shimizu
patent: 5016866 (1991-05-01), Takahashi
patent: 5158279 (1992-10-01), Laffey et al.
patent: 5435538 (1995-07-01), Billings et al.
patent: 5564689 (1996-10-01), Fukube
patent: 6585252 (2003-07-01), Russo et al.
patent: 58-119526 (1983-07-01), None
patent: 62-275941 (1987-11-01), None

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