AC corona current regulation

Details AC corona current regulation AC corona current regulation

1998-07-06

2000-03-07

Anderson, Bruce C.

Radiant energy

Corona irradiation

250325, H01T 1904

Patent

active

060343680

ABSTRACT:
In an electrostatographic imaging apparatus employing at least one charging device, in an electrostatic charge process involving the creation of latent electrostatic images, A method for controlling corona current generation by said at least one charging device is disclosed. The method comprising the steps of: generating an AC current and an AC voltage with a power supply; measuring the steady state negative half cycle of current, filtering capacitive current spikes from said negative half cycle current measurement and generating a corona current feedback signal in response to said filtering step; and dynamically adjusting the AC voltage in response to the corona current feedback signal so that the steady state negative half cycle of current measured in said measuring step remains constant.

REFERENCES:
patent: 3699388 (1972-10-01), Ukai
patent: 3908164 (1975-09-01), Parker
patent: 3950680 (1976-04-01), Michaels et al.
patent: 4234249 (1980-11-01), Weikel, Jr. et al.
patent: 4831332 (1989-05-01), Rudisill et al.

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