Sheet feed and transport

Details Sheet feed and transport Sheet feed and transport

1978-06-28

1981-02-24

Stoner, Jr., Bruce H.

Sheet feeding or delivering

Feeding and delivering

Separator and conveyor

271195, 271245, 271270, 271275, 271276, 271DIG2, 346138, B65H 512, B65H 906

Patent

active

042523079

ABSTRACT:
A low inertia rotary drum transport for flexible sheets, the drum rotating at a relatively low speed for loading a sheet, rapidly accelerating to a relatively high speed for processing the sheet, then rapidly decelerating to the relatively low speed for unloading the sheet. A gate and conveyor are controlled to supply the sheet to the drum in precise registration. Vacuum apparatus and a charge corona are provided for attaching the sheet to the drum, the vacuum attaching the leading portion of the sheet, the corona charging the middle portion of the sheet to hold the sheet to the drum by electrostatic attraction, and the vacuum attaching the trailing portion of the sheet. Air pressure apparatus detaches the leading portion of the sheet for unloading.

REFERENCES:
patent: 2946593 (1960-07-01), Beyer
patent: 3323794 (1967-06-01), Brandt
patent: 3351340 (1967-11-01), Levine
patent: 3466029 (1969-09-01), Jensen et al.
patent: 3506259 (1970-04-01), Caldwell et al.
patent: 3663012 (1972-05-01), Van Den Honert
patent: 3784190 (1974-01-01), Crawford
patent: 3804401 (1974-04-01), Stange
patent: 3808603 (1974-04-01), Degreve et al.
patent: 3843114 (1974-10-01), Kojima et al.
patent: 4015523 (1977-04-01), Evans et al.
patent: 4085673 (1978-04-01), Wierszewski

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