Electronic equipment utilizing forward/reverse rotation of motor

Details Electronic equipment utilizing forward/reverse rotation of motor Electronic equipment utilizing forward/reverse rotation of motor

1987-07-02

1989-04-18

Rolla, Joseph J.

Sheet feeding or delivering

Feeding

Multiple supplies

271110, 271114, 271258, 400624, 318696, B65H 344, H02P 800

Patent

active

048220191

ABSTRACT:
A cut sheet feeder feeds out a cut sheet from a first paper cassette when a bidirectional pulse motor for driving paper feed rollers rotates forward and from a second paper cassette when the bidirectional pulse motor rotates reversely, and can suppress feed-out of the cut sheet from the wrong paper cassette when the pulse motor starts to rotate. The feeding of the cut sheet from the wrong paper cassette is suppressed by stopping the motor at a predetermined phase. A first memory stores the predetermined phase and a second memory stores the current phase. A controller compares the contents of the first and second memories and applies a drive pulse to the motor until the contents of the memories coincide. A loop is formed in the cut sheet prior to the comparison of the contents of the memories to permit the motor to be rotated in the proper direction.

REFERENCES:
patent: 3965406 (1976-06-01), Yablonski
patent: 4025187 (1977-05-01), Taylor et al.
patent: 4084805 (1978-04-01), Simpson
patent: 4271773 (1981-06-01), Makabe
patent: 4438915 (1984-03-01), Akamatsu et al.
patent: 4555653 (1985-11-01), Nawata et al.
patent: 4626758 (1986-12-01), Takeuchi et al.
patent: 4706008 (1987-11-01), Cronch et al.
patent: 4707649 (1987-11-01), Kanemura

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