Chemistry: electrical and wave energy – Processes and products
Patent
1982-07-23
1984-02-07
Tufariello, T. M.
Chemistry: electrical and wave energy
Processes and products
204224R, C25O 502, C25O 1700
Patent
active
044301650
ABSTRACT:
A method of and apparatus for electrodepositing a metal onto a workpiece wherein an electric potential is applied between an anodic electrode and the cathodic workpiece in the presence of an electrodepositing solution. A narrow thermal light beam is directed onto the workpiece and intercepted by a localized area thereon to activate an interface between the area and the electrodepositing solution. The metal in the solution is thereby electrodeposited selectively on that localized area. The beam and the workpiece are relatively displaced to successively shift the area of interception of the beam until a desired surface region on the workpiece is electrodeposited. Preferably, the thickness of the solution traversed by the beam incident upon the localized area is limited not to exceed a preselected dimension. The apparatus preferably comprises a mirror for reflecting the beam from a source thereof which is fixed in position onto the workpiece and a drive unit for displacing the mirror to achieve the required displacement of the incident beam relative to the workpiece. A lens is disposed in the optical path for the beam and the position thereof is controlled to maintain its focal plane coincident with the beam-intercepting localized area.
REFERENCES:
patent: 4217183 (1980-08-01), Melcher
Dubno Herbert
Inoue-Japax Research Incorporated
Ross Karl F.
Tufariello T. M.
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