Stock material or miscellaneous articles – Structurally defined web or sheet – Discontinuous or differential coating – impregnation or bond
Patent
1990-01-30
1991-10-29
Ryan, Patrick J.
Stock material or miscellaneous articles
Structurally defined web or sheet
Discontinuous or differential coating, impregnation or bond
428323, 428327, 428403, 428901, 361397, B32B 900
Patent
active
050615513
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: 4049844 (1977-09-01), Bolen et al.
IEEE Transactions on Electrical Insulation, vol. EI-13, #2, 4/78, Radiation Curable Conductive Ink, Bolen et al, pp. 116-121.
Key-Tech Inc.
Ryan Patrick J.
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