Printed circuit board
First Claim
1. A U.V. curable ink comprising from about 33 to 38 weight percent of a thermosetting resin binder, 67-62 weight percent of spherical or spheroidal conductive particles having a particle size distribution ranging from 1 to 30 microns and an effective amount of a ketone-amine curing agent.
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Accused Products
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.
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Citations
4 Claims
- 1. A U.V. curable ink comprising from about 33 to 38 weight percent of a thermosetting resin binder, 67-62 weight percent of spherical or spheroidal conductive particles having a particle size distribution ranging from 1 to 30 microns and an effective amount of a ketone-amine curing agent.
Specification