Patent ID: 6044550
Filing Date: 2000-04-04
Classification: H05K,Y10T

Abstract:
A process for producing printed circuit boards, which process comprises the following steps:a. drilling holes in a copper clad laminate;b. applying an imaged etch resist to at least one outer surface of the copper clad laminate;c. contacting the copper clad laminate with an etchant for copper, thereby creating circuit elements on the at least one outer surface of the copper clad laminate having the imaged etch resist applied thereon;d. activating said holes to accept plating therein;e. stripping away said imaged etch resist;f. applying an imaged plating mask to the at least one outer surface of the copper clad laminate;g. contacting the copper clad laminate with a plating solution which plates a metal coating in said holes.wherein the foregoing steps are performed in the order given relative to each other.