Charging device for an electrostatic copying machine

Details Charging device for an electrostatic copying machine Charging device for an electrostatic copying machine

1982-10-08

1985-05-14

Grimley, A. T.

Photocopying

Including fiber optics

355 14CH, 355 15, 250324, 361225, G03G 1500

Patent

active

045168482

ABSTRACT:
A charging device for an electrostatic copying machine in which a tongue piece is positioned adjacent to a charging wire. A DC signal is applied to a piezoelectric element to flex the tongue piece to a position in contact with or closely adjacent to the charging wire, and a high frequency signal is superimposed onto the DC signal so as to flex and vibrate the tongue piece against the charging wire. The vibratory piezoelectric element may be fixed to and suspended from the charging wire; alternatively the piezoelectric vibratory element may support the charging wire at an intermediate portion of the charging wire.

REFERENCES:
patent: 3496352 (1970-02-01), Jugle
patent: 3840744 (1974-10-01), Hedman, Jr.
patent: 3842273 (1974-10-01), Van Buskirk
patent: 3844657 (1974-10-01), Schweriner
patent: 3845307 (1974-10-01), Gallo
patent: 3848994 (1974-11-01), Fraser
patent: 3870883 (1975-03-01), Oagley
patent: 3891846 (1975-06-01), Ito
patent: 3953772 (1976-04-01), Zimmer
patent: 3978379 (1976-08-01), Del Vecchio
patent: 4073587 (1978-02-01), Selwyn

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