Sheet feeding apparatus

Details Sheet feeding apparatus Sheet feeding apparatus

1991-12-23

1993-09-14

Olszewski, Robert P.

Sheet feeding or delivering

Feeding

With means to align sheet

271268, B65H 916

Patent

active

052442020

ABSTRACT:
A sheet feeding device includes a vibration member having at least one circular-arc portion, for generating a travelling wave, and a sheet guide for guiding a sheet. Since an amplitude of vibration at an inner circumferential side of the vibration member is smaller than an amplitude of vibration at an outer circumferential side, a distortion is produced in the vibration member in a direction perpendicular to the direction of movement of the sheet. The sheet guide is provided at an inner circumferential side of the vibration member, so that the sheet is fed due to the distortion while being pressed against the sheet guide. Hence, an oblique movement of the sheet due to unevenness in the thickness of the sheet can be prevented.

REFERENCES:
patent: 2726864 (1955-12-01), Waechter
patent: 2729136 (1956-01-01), Feick et al.
patent: 3415509 (1968-12-01), Tyburski et al.
patent: 3516656 (1970-06-01), Sherman
patent: 4334759 (1982-06-01), Clausing
patent: 4426073 (1984-01-01), Mizuma
patent: 4432541 (1984-02-01), Clark et al.
patent: 4955598 (1990-09-01), Hiroshige et al.

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