Sheet feeder controlled by fed sheet

Details Sheet feeder controlled by fed sheet Sheet feeder controlled by fed sheet

1981-05-20

1983-08-30

Stoner, Jr., Bruce H.

Sheet feeding or delivering

Feeding

Separators

13762522, 13762544, 13762566, 271 99, 271106, B65H 312

Patent

active

044013019

ABSTRACT:
A sheet feeder employing a vacuum feed belt in conjunction with a vacuum control plenum immediately adjacent the downstream edge of the vacuum belt, a self actuating valve being provided to shut off the vacuum supply to the feed belt when the sheet being fed blocks the openings in the control plenum to prevent acquisition of a second sheet by the feed belt until the trailing edge of the sheet being fed clears the control plenum.

REFERENCES:
patent: 2243876 (1941-06-01), Maddox
patent: 2243899 (1941-06-01), Fulcher
patent: 3212772 (1965-10-01), Ward
patent: 3312464 (1967-04-01), Rehm
patent: 3620526 (1971-11-01), Iles et al.
patent: 3649002 (1972-03-01), Burkhardt
patent: 3973768 (1976-08-01), Shannon
patent: 4062536 (1977-12-01), Michelson
patent: 4157177 (1979-06-01), Strecker
patent: 4221377 (1980-09-01), Bodewein et al.
Boase, E. et al. "Recirculating Document Feeder", Research Disclosure, Feb. 1978, No. 166, pp. 38-39, Item 16,659.
Souba, C. H. "Vacuum Document Picker", IBM Technical Disclosure Bulletin, vol. 13, No. 9, Feb. 1971, p. 2567.

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