Sheet feeding device utilizing vibration waves

Details Sheet feeding device utilizing vibration waves Sheet feeding device utilizing vibration waves

1990-02-22

1991-11-19

Dayoan, D. Glenn

Sheet feeding or delivering

Feeding

By means to convey sheet

271 81, 271267, 73584, B65H 702

Patent

active

050659995

ABSTRACT:
There is disclosed a sheet feeding device having at least two vibration members pinching a sheet, which is frictionally driven by the travelling vibration waves generated in the vibration members. The device is further provided with a detector for detecting the state of vibration of the vibration members and generating a signal corresponding to the phase difference between the vibrations. The signal is used for correcting the vibration state of the vibrations members, thus significantly reducing the unevenness in the sheet feeding.

REFERENCES:
patent: 3603680 (1971-09-01), Barton
patent: 4066969 (1978-01-01), Pearce et al.
patent: 4504961 (1985-03-01), Hariguchi

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