| 摘要 |
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.
|
