Automatic paper feeder

Details Automatic paper feeder Automatic paper feeder

1988-02-05

1990-05-15

Rolla, Joseph

Sheet feeding or delivering

Feeding

Separators

271127, 271225, 271258, B65H 714, B65H 124

Patent

active

049251775

ABSTRACT:
An automatic paper feeder presses the surface of copying paper loaded on a paper loading plate in a paper cassette against a paper feeding roller, and feeds the paper sheet by sheet in accordance with the rotation of the roller. When a paper detector provided at a downstream side of the roller does not detect the paper within a specified period of time after starting a paper feeding operation, the automatic paper feeder rotates the roller in the reverse direction, at the same time releasing the pressure between the paper and the roller, and then increases the pressure and rotates the roller in the forward direction to restart the paper feeding operation.

REFERENCES:
patent: 3948279 (1976-04-01), Gupta
patent: 4391439 (1983-07-01), Edstrom
patent: 4394088 (1983-07-01), Hanamoto et al.
patent: 4398550 (1983-08-01), Shireman
patent: 4436406 (1984-03-01), Murasaki et al.
patent: 4471178 (1984-10-01), Furuichi et al.
patent: 4535463 (1985-08-01), Ito et al.
patent: 4616819 (1986-10-01), Makio et al.
patent: 4750020 (1988-06-01), Ishizu et al.

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