Sheet-feeding mechanism

Details Sheet-feeding mechanism Sheet-feeding mechanism

1989-11-06

1990-12-04

Rolla, Joseph J.

Sheet feeding or delivering

Feeding

By means to convey sheet

271109, B65H 306, B65H 504

Patent

active

049746804

ABSTRACT:
A sheet-feeding mechanism comprises feed rollers attached to a first driving shaft and spaced from each other by a predetermined distance, two of the feed rollers being end feed rollers located at both ends of the first driving shaft. A pair of end ball rollers are attached to a second driving shaft and located in correspondence to the end feed rollers. A double-structure bail roller is attached to the second driving shaft in correspondance to the feed rollers, except for the end feed rollers. The double-structure bail roller includes an inner core and an outer layer having a small friction coefficient. The iner core is elastically deformable in a direction in which the end feed rollers are pressed against the corresponding bail rollers.

REFERENCES:
patent: 3622059 (1971-11-01), Savela
patent: 3734491 (1973-05-01), Beery et al.
patent: 4387889 (1983-06-01), Koyama et al.
patent: 4893806 (1990-01-01), McLaughlin
Richards, et al., "Composite Drive Roll", IBM Technical Disclosure Bulletin, vol. 19, No. 1, p. 248, Jun. 1976.
Kraniauskas, et al., "Resilient Roller", Xerox Discosure Journal, vol. 4, No. 1, p. 9, Jan./Feb. 1979.

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