Sheet feeding or delivering – Delivering – Multiple discharge
Patent
1984-01-03
1988-09-20
Rolla, Joseph J.
Sheet feeding or delivering
Delivering
Multiple discharge
271188, B65H 2970
Patent
active
047720085
ABSTRACT:
An apparatus and method for separating doublets includes a device in which opposed surfaces that are connected to a vacuum source have a rippled portion in which vacuum slots are positioned at the apex of the ripples. There is a gradual transition in the surface of the slots from a planar portion to a rippled portion and back to a planar portion. The two surfaces are spaced a predetermined distance from each other such that when a double sheet of paper is driven through the rippled area, both the upper sheet and the lower sheet can tack to the upper and lower slots without having to jump across a gap. Subsequently, as the two sheets move into the area of the surfaces where there are no ripples, a strong separating force is generated as each sheet remains attached to the respective vacuum slots since the upper and lower slots are not in the same plane.
REFERENCES:
patent: 3040866 (1962-06-01), Rehm
patent: 3224355 (1965-12-01), Thomiszer
patent: 3504911 (1970-04-01), Silverberg
patent: 3674257 (1972-07-01), Neeb et al.
IBM Technical Disclosure, vol. 6, No. 8, Jan., 1964, pp. 17-18.
Palumbo, Jr. Anthony C.
Spencer Paul R.
Henry II William A.
Rolla Joseph J.
Xerox Corporation
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