Sheet feeding or delivering – Feeding – Separators
Patent
1981-11-02
1984-07-31
Schacher, Richard A.
Sheet feeding or delivering
Feeding
Separators
271 98, 271 99, 271105, 271 34, 271 35, 271 20, 271 23, B65H 304, B65H 312
Patent
active
044625863
ABSTRACT:
A sheet feeding apparatus for feeding sheets from the top or bottom of a stack of sheets which includes a sheet stack supporting tray, a vacuum plenum and feed belt sheet separating and feeding assembly with at least one feed belt having a vacuum plenum disposed within the run of the belt, the vacuum plenum and the belt assembly being positioned adjacent a sheet to be fed such that a rear portion of the plenum and belt assembly lies opposite a portion of a stack of sheets to be fed and is adjacent and substantially parallel to the plane of the sheet to be fed and a front portion of the plenum and belt assembly which lies opposite the front portion of a stack of sheets to be fed and in a plane angled away from the plane of the sheet to be fed. In a preferred embodiment the feeder is a bottom feeder associated with a sheet stacking tray which has two sloping planar side wings one at each side of an opening in the base plane of the tray which are angled upward from the base plane and are angled outward from front to rear of the tray and which intersect the base plane along a line from a point at the rear of the tray in the approximate location of the rear corners of a rectangle the size of a sheet to be fed to a point at the front of the tray at the transition of the vacuum plenum and which include downward sloping transition wings at the front.
REFERENCES:
patent: 2812178 (1957-11-01), Hagren
patent: 2956801 (1960-10-01), Coakley
patent: 3103355 (1963-09-01), Hubbard
patent: 3424453 (1969-01-01), Halbert
patent: 3961784 (1976-06-01), Sevak
patent: 4014537 (1977-03-01), Stange
patent: 4270746 (1981-06-01), Hamlin
patent: 4324395 (1982-04-01), Silverberg
Browne John M.
Silverberg Morton
Schacher Richard A,.
Xerox Corporation
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