Coating processes – Electrical product produced – Integrated circuit – printed circuit – or circuit board
Patent
1987-02-24
1988-08-02
Newsome, John H.
Coating processes
Electrical product produced
Integrated circuit, printed circuit, or circuit board
427306, B05D 512
Patent
active
047613041
ABSTRACT:
The method for the manufacture of printed circuit boards which have been imaged by means of a polymeric resist which comprises selectively catalyzing those areas not covered by the image by treating the imaged circuit board with a catalyst having a charge higher than the charge on the non-imaged areas and sufficiently lower than the charge on the resist image to cause the catalyst to be repelled therefrom, but sufficiently close to the charge on the non-imaged areas to cause adsorption of the catalysts thereon.
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Brasch William R.
Favini Carlo
Lea-Ronal, Inc.
Newsome John H.
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