Electricity: electrical systems and devices – Electric charge generating or conducting means – With specific power supply
Patent
1979-04-20
1982-07-13
Braun, Fred L.
Electricity: electrical systems and devices
Electric charge generating or conducting means
With specific power supply
250324, 250326, 355 3CH, 355 14CH, 361230, H02H 900
Patent
active
043397832
ABSTRACT:
An electrophotographic apparatus employs an alternating current corona discharge apparatus for the purpose of forming an electrostatic image on a photosensitive member. The alternating current corona discharge apparatus has a transformer for transforming or stepping up the alternating current source voltage, the secondary winding of which is connected to the ground at one end. The secondary winding is shunted by a series connection of a first plurality of varistors. A smaller second plurality of series connected varistors selected from the first plurality of series connected varistors are shunted by a first diode-resistor series connection of a diode with the cathode on the ground side and a variable resistor and a smaller and third plurality of different series connected varistors selected from the first plurality of series connected varistors are shunted by a second diode-resistor series connection of a diode with the anode on the ground side and a variable resistor. The non-grounded end of the secondary winding is connected to a wire electrode of the corona discharge apparatus and the grounded end of the secondary winding is connected to a shield plate enclosing the wire electrode.
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Kato Shoshichi
Kawataki Hiroyuki
Kinashi Hiroshi
Miwa Yoshihisa
Braun Fred L.
Sharp Kabushiki Kaisha
Yahata Electric Works Ltd.
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