Coating apparatus – With means to apply electrical and/or radiant energy to work... – Electrostatic and/or electromagnetic attraction or...
Patent
1995-06-06
1997-09-23
Warden, Jill
Coating apparatus
With means to apply electrical and/or radiant energy to work...
Electrostatic and/or electromagnetic attraction or...
118625, 118696, 118698, 12820315, 12820323, 604 58, B05B 510
Patent
active
056699735
ABSTRACT:
Apparatus having a substrate having a planar conductive plating located on a first surface of a dielectric layer and having a conductive trace (a collection trace) located on a second surface of the dielectric layer such that the conducting plating and the conductive trace have a parallel, spaced-apart relation. The conductive trace is charged by supplying a voltage to the plating and the trace to establish a voltage differential across the dielectric layer. As such, depending upon the magnitude of the voltage, polarity of the voltage and the duration for which the voltage is applied to the trace, a certain quantity and polarity of charge accumulates on the trace. The material to be deposited is charged to an opposite polarity than that of the trace and then the deposition material is applied to the trace. Consequently, the substrate electrostatically retains the deposition material on the collection trace.
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Burke William J.
David Sarnoff Research Center Inc.
Ludlow Jan M.
Warden Jill
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