Sheet feeding or delivering – Feeding – Separators
Patent
1992-06-03
1993-05-18
Schacher, Richard A.
Sheet feeding or delivering
Feeding
Separators
271125, B65H 346
Patent
active
052113884
ABSTRACT:
An apparatus for feeding individual sheets from the bottom of a sheet stack. The sheet stack is placed in the paper tray with the lead edge abutting the sheet feeding apparatus. The face of the stack rests against the main fang. As the feed roll forwards the sheets from the bottom of the stack to a position under the main fang, further sheet separation occurs as the lead edges of the sheets strike a substantially arcuate member located between the main fang and the retard roll. The curved portion of the member which has a larger radius of curvature than the retard member causes the sheets to be shingled out permitting a single sheet to pass under the retard roll and to be advanced by the feed roll.
REFERENCES:
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patent: 3768803 (1973-10-01), Stange
patent: 3895791 (1975-07-01), Kramell et al.
patent: 3937455 (1976-02-01), Hauser
patent: 3941373 (1976-03-01), Stange
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patent: 4306713 (1981-12-01), Avritt
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patent: 4705265 (1987-11-01), Hirota
patent: 4991831 (1991-02-01), Green
Xerox Disclosure Journal, vol. 8, #4, Jul./Aug. 1983, "Edge Force Sheet Separating System", by John Maksymiak, et al., pp. 315-316.
Xerox Disclosure Journal, vol. 12, #1, Jan./Feb., 1987 "Bottom Friction Retard Feeder" by William D. Milillo, p. 51.
Xerox Disclosure Journal, vol. 7, #2, Mar./Apr. 1982, "Floating Gate Sheet Separator/Feeders With Outriggers" by Dennis P. Teeter, et al., pp. 67-68.
Schacher Richard A,.
Xerox Corporation
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