Sheet feeding apparatus capable of feeding sheets of plural size

Details Sheet feeding apparatus capable of feeding sheets of plural size Sheet feeding apparatus capable of feeding sheets of plural size

1991-05-08

1993-02-09

Olszewski, Robert P.

Sheet feeding or delivering

Feeding

Separators

271108, B65H 308

Patent

active

051848120

ABSTRACT:
Air flows are jetted at leading edge of sheets from nozzles aligned along the widthwise direction of the sheets so as to separate the bottommost or uppermost sheet from the remaining sheets. When the sheets are large-sized, all the aligned nozzles form the air flows for separating the sheets. When the air flows from all the nozzles are jetted at the small-sized sheets, the sheets are liable to flap. Accordingly, the nozzles arranged near the both ends are closed, so that only the nozzles jetting the air flows to effectively separate the small-sized sheets are used.

REFERENCES:
patent: 3198514 (1965-08-01), Barbara et al.
patent: 4418905 (1983-12-01), Garavuso
patent: 4518159 (1985-05-01), Nishibori et al.
patent: 4566683 (1986-01-01), Moore
patent: 4585222 (1986-04-01), Nishibori et al.
patent: 4887805 (1989-12-01), Herbert et al.
patent: 5519859 (1980-05-01), Kikuchi

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