Device for the electronic generation of an electrostatic charge

Details Device for the electronic generation of an electrostatic charge Device for the electronic generation of an electrostatic charge

1977-12-01

1979-05-22

Smith, Alfred E.

Electric lamp and discharge devices: systems

Plural power supplies

Plural cathode and/or anode load device

355 3P, H05B 3700, H05B 3900, H05B 4100

Patent

active

041561651

ABSTRACT:
A device is disclosed which selectively generates an electrostatic charge pattern directly on a portion of a surface for use in facsimile process machines or high-speed printers. A matrix is formed by two sets of electrodes, one perpendicular to the other, separated by a perforated metallic spacer having an electret film on each side between it and the electrodes. One set of electrodes is perforated corresponding to the perforations in the spacer. Separate control devices control the application of an electrical voltage to the sets of electrodes enabling an electrostatic charge to be generated directly on a surface covering the perforated electrode. Charged toner particles may be applied to the surface by known techniques to effectuate the printing or reproduction of an image.

REFERENCES:
patent: 4031429 (1977-06-01), Holz et al.

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