Method for depositing a metal on a surface

Details Method for depositing a metal on a surface Method for depositing a metal on a surface

1983-10-12

1985-04-16

Newsome, John H.

Coating processes

Electrical product produced

Welding electrode

427 98, 430417, B05D 306

Patent

active

045115974

ABSTRACT:
An improved method for making conductive metal patterns involving the steps of treating a substrate with a solution comprising a reducible salt of a non-noble metal and a light radiation sensitive reducing compound, exposing said substrate to light radiant energy, fixing with a solution comprised of a complexing agent followed by electroless deposition, the improvement comprising extending the bath life of said fixing solution by maintaining the concentration of the light sensitive reducing compound on the fixing solution so that it does not exceed 0.4 m moles/liter.

REFERENCES:
patent: 4268536 (1981-05-01), Beckenbaugh et al.
patent: 4304849 (1981-12-01), Beckenbaugh et al.
Article entitled "A New Process For Patterning Printed Wiring Boards", from Electronic Packaging and Production, Dec. 1981.

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