AC corona charger with buried floor electrode

Details AC corona charger with buried floor electrode AC corona charger with buried floor electrode

1998-09-30

2000-03-14

Gaffin, Jeffrey

Electricity: electrical systems and devices

Electric charging of objects or materials

Particulate matter

361229, 250324, H01T 1904

Patent

active

060381205

ABSTRACT:
A corona charger and method and apparatus for corona charging features an insulative shield and an electrically biased grid electrode spaced from the shield. One or more substantially bare corona wires are located between the grid electrode and the shield. The corona wires are electrically biased with an AC voltage. An electrically biased highly conductive buried floor electrode forms a part of the charger and has a surface located between the one or more corona wires and the shield. An insulating layer is located between the corona wires and the surface of the buried floor electrode so that there is no exposure of the buried floor electrode in a direct line of sight from a corona wire.

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R.M. Schaffert, M.A., Ph.D., Electrophotography, p. 234.

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