Overlapped document detector

Details Overlapped document detector Overlapped document detector

1981-07-06

1983-08-09

Stoner, Jr., Bruce H.

Sheet feeding or delivering

Feeding

With means to interrupt feeding

271284, 250223R, B65H 712, B65H 714

Patent

active

043974600

ABSTRACT:
An overlapped document detector for a document handling apparatus comprises an air knife in the primary document path to separate overlapped documents and forward them along separate ones of two secondary paths. Optical detectors focused on each secondary path, detects documents to detect an overlapped condition. A vacuum is created to maintain the documents in their respective secondary paths for detection purposes.

REFERENCES:
patent: 2441912 (1948-05-01), Streich
patent: 2906189 (1959-09-01), Robertson
patent: 3040866 (1962-06-01), Rehm
patent: 3186708 (1965-06-01), Hinz
patent: 3278754 (1966-10-01), Wallace
patent: 4160546 (1976-07-01), McMillan et al.

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