Sheet-extracting device with a cassette for receiving a stack of

Details Sheet-extracting device with a cassette for receiving a stack of Sheet-extracting device with a cassette for receiving a stack of

1998-03-10

1999-08-17

Terrell, William E.

Sheet feeding or delivering

Feeding

Pack holders

271110, 271111, 271126, B65H 708

Patent

active

059381892

ABSTRACT:
The invention relates to a sheet-extracting device with a cassette for receiving a stack of sheets, and to a method of controlling the pressing force of the stack of sheets against the extracting device. The latter has extracting rollers (16) which are arranged on a floating shaft (34). For its part, the floating shaft (34) is centrally connected in a rationally fixed manner to a drive shaft (18) passing through it. The drive shaft (18) is mounted, by one end (20), in a frame-mounted bearing (21) and, by its other end (62), in a displaceable bearing (64). Acting on the bearing (64) is a force sensor (70, 74, 76) which is intended for determining the pressing force of the stack of sheets (12) against the extracting rollers (16). The pressing force is controlled such that it always moves within a narrow middle range between a minimum and a maximum possible value.

REFERENCES:
patent: 4457508 (1984-07-01), Eichler et al.
patent: 4548397 (1985-10-01), Runzi
patent: 4919412 (1990-04-01), Weigel et al.
patent: 5104109 (1992-04-01), Kubo
patent: 5295675 (1994-03-01), Hain
patent: 5398924 (1995-03-01), Hiltwein et al.
patent: 5518230 (1996-05-01), Scarlata et al.
patent: 5556252 (1996-09-01), Kuster
patent: 5848786 (1998-12-01), Holland-Letz

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