Sheet feeding and separating apparatus with stack force relief/e

Details Sheet feeding and separating apparatus with stack force relief/e Sheet feeding and separating apparatus with stack force relief/e

1982-09-21

1985-12-31

Stoner, Jr., Bruce H.

Sheet feeding or delivering

Feeding

Separators

271110, 271118, 271122, B65H 304

Patent

active

045616442

ABSTRACT:
A retard feeder and separator apparatus includes a sensor located at a retard nip downstream from a portion of a feed belt that applies a normal force to a stack of sheets and forwards sheets individually from the stack. The sensor detects the lead edge of a sheet fed from the stack and simultaneously causes relief of the normal force against the stack in order to reduce multifeeds and sheet damage. Alternatively, if the sensor does not sense a sheet within a predetermined time the normal force against the stack will be increased to reduce misfeeding.

REFERENCES:
patent: 3469834 (1979-09-01), Stange et al.
patent: 3768803 (1973-10-01), Stange et al.
patent: 3895790 (1975-07-01), Hoyer et al.
patent: 3934869 (1976-01-01), Strobel, Jr.
patent: 3988017 (1976-10-01), Kyhl
patent: 4033578 (1977-07-01), Taylor et al.
patent: 4203586 (1980-05-01), Hoyer
IBM Technical Disclosure Bulletin, "Document Autofeed Mechanism and Multifeed Detection", vol. 22, No. 11, p. 4953, Apr. 1980, to Abbiate et al.

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