Document feeder for a copying machine

Details Document feeder for a copying machine Document feeder for a copying machine

1997-09-08

2000-11-21

Chen, Sophia S.

Electrophotography

Document handling

Original

27125801, 358498, 399367, 399374, G03G 1500, B65H 500

Patent

active

061514780

ABSTRACT:
A document feeder which has a feed roller for feeding a document picked up from a tray toward a reading position, a first pair of rollers which is located immediately before the reading position, a second pair of rollers which is located immediately after the reading position, and a document sensor. After the leading edge of the document transported by the feed roller comes to the first pair of rollers, the feed roller keeps rotating for a specified time, whereby, registration of the document is carried out. In response to a signal which is generated when the document sensor detects the trailing edge of the document, feeding of a next document is started.

REFERENCES:
patent: 4662738 (1987-05-01), Kasuya
patent: 4775139 (1988-10-01), Honjo et al.
patent: 4996568 (1991-02-01), Hamakawa
patent: 5453852 (1995-09-01), Morikawa et al.
patent: 5461468 (1995-10-01), Dempsey et al.

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