Compositions – Electrically conductive or emissive compositions – Free metal containing
Patent
1990-01-30
1992-03-03
Barr, Josephine
Compositions
Electrically conductive or emissive compositions
Free metal containing
252513, 252519, 523458, H01B 106
Patent
active
050930389
ABSTRACT:
A method for producing a circuit board involves printing a U.V. curable ink onto a substrate in a desired circuit 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: 3968056 (1976-07-01), Bolon et al.
patent: 4410457 (1983-10-01), Fujimura et al.
patent: 4695404 (1987-09-01), Kwong
patent: 4960614 (1990-10-01), Durand
patent: 4999136 (1991-03-01), Weitfang et al.
Barr Josephine
Key-Tech Inc.
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