Methods and apparatus for neutralizing a static electrical charg

Details Methods and apparatus for neutralizing a static electrical charg Methods and apparatus for neutralizing a static electrical charg

1983-06-09

1985-04-30

Eisenzopf, Reinhard J.

Electricity: electrical systems and devices

Discharging or preventing accumulation of electric charge

By charged gas irradiation

118312, 118602, 427197, 427345, H05F 300

Patent

active

045147795

ABSTRACT:
A thermography machine applies thermography powder to the printed surfaces of sheets. Excess powder is vacuumed from the sheets under the influence of suction generated by a cyclone separator which separates the excess powder from an air stream in which the powder is entrained. A static charge eliminator is provided for neutralizing the electrical charge on the powder particles to facilitate a smooth flow of the particles through the separator. The static charge eliminator includes a plurality of electrical charged pins across which is conducted a flow of outside air which is sucked through the static charge eliminator by the suction pressure from the separator. As the air flows across the charged pins, oxygen is converted to ozone and the ozone is conducted into contact with the powder particles within the separator. The pins have a contoured profile along their length to maximize the ozone-producing process.

REFERENCES:
patent: 1977991 (1934-10-01), Hawkins
patent: 2757635 (1956-08-01), Lipsius
patent: 3308344 (1967-03-01), Smith et al.
patent: 4048667 (1977-09-01), Brennecke
patent: 4414913 (1983-11-01), Sarda

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