PURPOSE: To enable uniform electrification and destaticization with a discharge device for electrification and destaticization of an electrostatic recorder, etc. by setting an alternating voltage in such a way that the width in the region of creeping discharge coincides approximately with the width of an inductive electrode.
CONSTITUTION: An alternating voltage is impressed between the inductive electrode 4 and discharge electrode 5 of a discharge member 1 by a means 6 for impressing the alternating voltage. A bias voltage is impressed between the dielectric base body 2a of a member 2 to be electrified and the electrode 5 by a means 7 for impressing the bias voltage to electrify the insulator of the member 2 or the surface of a photoconductor 2b. The width l, in a region 10, of the extension of the creeping discharge extending along the surface of a dielectric material 3 on both sides of the electrode 5 increase with an increase in the peak-peak value of the alternating voltage impressed between the electrode 4 and the electrode 5 until said discharge is satd. and the width l coincides approximately with the width L of the electrode 4. The width l of the region 10 of the creeping discharge remains constant in the longitudinal direction. The uniform electrification relatively stable with environmental fluctuation (temp., humidity, etc.) is made possible.
NAGASE YUKIO
TAKEUCHI TATSUO
EGAMI HIDEMI
SATOMURA HIROSHI
