Automatic document feeder

Details Automatic document feeder Automatic document feeder

1995-08-25

1997-06-03

Skaggs, H. Grant

Sheet feeding or delivering

Feeding and delivering

Sensor located at the feeder and controls the delivering

271 321, 271 317, 271 402, 271 403, 271 41, 271 1002, 271 1004, 271 1012, 271 1013, 271242, 271270, 271902, B65H 522

Patent

active

056346352

ABSTRACT:
An automatic document feeder for feeding and discharging a document or documents to and from a document handling device such as a copying machine includes a document supply unit having a separation roller and register rollers, positioning unit and discharge unit, which are driven by a drive unit having a single reversible driving motor. The separation roller is operated to forward the document to a document reading portion when driving the driving motor in a first direction, and stopped when driving the driving motor in a second direction. The register rollers are operated only when driving the driving motor in a second direction. By slowing down the separation roller just before the document collides with the register rollers, the document can be transferred at high speed without being damaged.

REFERENCES:
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patent: 4579327 (1986-04-01), Furuichi
patent: 4667951 (1987-05-01), Honjo et al.
patent: 4721297 (1988-01-01), Katayama
patent: 4761001 (1988-08-01), Hayakawa et al.
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patent: 5320339 (1994-06-01), Thomas et al.
Japanese Patent Application Publication No. SHO 53-102752(A) Jul. 9, 1978.
Japanese Patent Application Publication No. SHO 61-295946(A) Dec. 26, 1986.
Japanese Patent Application Publication No. HEI 1-127557(A) May 19, 1989.
Japanese U.M. Application Publication No. SHO 58-34128(A) May 3, 1983 English abstract not enclosed.

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