Apparatus and method for sample sheet removal from the delivery

Details Apparatus and method for sample sheet removal from the delivery Apparatus and method for sample sheet removal from the delivery

1996-05-02

1998-09-22

Bollinger, David H.

Sheet feeding or delivering

Delivering

Multiple discharge

271211, 271220, B65H 2900

Patent

active

058103511

ABSTRACT:
In order to improve the sheet removal at the delivery station of a printing press, a blowing device is provided adjacent a side of a delivery stack of printed sheets. The blowing device includes one or more blowing tubes pneumatically coupled to a sheet hold-up device and two front lays of the printing press at the delivery station. When the sheet hold-up devices are extended into the region of the delivery stack and the front lays are swung to a lowered position, the blowing tubes direct a stream of pressurized air into the region of the front edge of the delivery stack. This pressurized air stream, in turn, produces air cushions above and below the sample sheet which to be drawn out, these air cushions separating the sample sheet from the adjacent printed sheets and permitting air free removal even in the case of large printed formats.

REFERENCES:
patent: 4205606 (1980-06-01), Jiruse
patent: 4811547 (1989-03-01), Raats et al.
patent: 5179900 (1993-01-01), Schwitzky
patent: 5607148 (1997-03-01), Mack et al.

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