Printed circuit board

Details Printed circuit board Printed circuit board

1990-01-30

1991-04-09

Ryan, Patrick J.

Stock material or miscellaneous articles

Structurally defined web or sheet

Discontinuous or differential coating, impregnation or bond

428323, 428325, 428331, 428357, 428397, 428462, 428463, 428901, 430311, 361397, B32B 900

Patent

active

050063979

ABSTRACT:
A method for producing a circuit board involves printing a U.V. curable ink onto a substrate in a desired cirucit pattern and curing the ink by exposing it to a pulsed U.V. source or subjecting the circuit pattern prepared from a U.V. curable ink containing magnetite particles to a magnetic field to move the magnetite particles to the upper surface of the U.V. curable ink. Other embodiments include circuit boards made in accordance with these methods and the use of the U.V. curable ink as a shielding composition for enclosures housing electronic equipment.

REFERENCES:
patent: 4013462 (1977-03-01), Gaffe et al.
patent: 4333961 (1982-06-01), Bruce et al.
patent: 4495040 (1985-01-01), Panico
patent: 4657779 (1987-04-01), Gaske
patent: 4671984 (1987-06-01), Maeda et al.
patent: 4863757 (1989-09-01), Durand

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