Method for improving the inspection of printed circuit boards

Details Method for improving the inspection of printed circuit boards Method for improving the inspection of printed circuit boards

1980-01-25

1984-01-24

Kaplan, G. L.

Chemistry: electrical and wave energy

Processes and products

G01N 2726

Patent

active

044274963

ABSTRACT:
An improved method is provided for the visual inspection of printed circuit boards to determine the continuity or discontinuity of the circuits. In the method the circuit boards are treated in an electrolytic bath to cause an electrochemical change in the color of the continuous circuits versus the discontinuous circuits.

REFERENCES:
patent: 3282805 (1966-11-01), Brown
patent: 3366554 (1968-01-01), Lindblad
patent: 3419479 (1968-12-01), Klein
patent: 3493481 (1970-02-01), Messner et al.
patent: 3494837 (1970-02-01), Messner et al.
patent: 3530045 (1970-09-01), Alburger
patent: 3810258 (1974-05-01), Mathauser
patent: 4019129 (1977-04-01), Grau
patent: 4063644 (1977-12-01), Hoffman et al.
patent: 4165270 (1979-08-01), Ost et al.

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