Sheet feeder with variable length, variable speed sheetpath

Details Sheet feeder with variable length, variable speed sheetpath Sheet feeder with variable length, variable speed sheetpath

1994-12-12

1999-08-24

Bartuska, F. J.

Sheet feeding or delivering

Feeding

Separator and conveyor

271 1008, 271270, B65H 534

Patent

active

059415185

ABSTRACT:
A floating feedhead having a variable sheetpath for an electrophotographic printing machine. A feeder for feeding sheets from the top of a stack to a processor for a printing machine is disclosed. The feedhead is of a standard retard feed type having either a nudger roll/feed roll or a feed belt in combination with a retard member to separate sheets. The feedhead is connected to the sheet delivery area of the machine by a variable length, variable speed sheetpath. The sheetpath has a drive member such as a drive nip in cooperation with the feedhead. When the sheetpath is at its longest the feedhead and variable drive member operate at a higher speed to deliver the sheets to the sheet intake area at a predetermined time interval. As sheets are fed and the sheetpath becomes shorter, the variable drive and feedhead slow to maintain proper sheet timing. The sheetpath may be of a telescopic baffle configuration or could alternatively be a variable speed vertical transport arrangement.

REFERENCES:
patent: 760402 (1904-05-01), Scott
patent: 4702466 (1987-10-01), DuBois
patent: 5050859 (1991-09-01), Paxon
patent: 5101241 (1992-03-01), Watanabe
patent: 5146286 (1992-09-01), Rees et al.

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