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US 4,049,844 AGranted
Method for making a circuit board and article made thereby
AssigneeGeneral Electric Company
InventorsDonald A. Bolon, Gary M. Lucas, Ralph L. Bartholomew
Life of this patent
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Abstract
A method is provided for making a circuit board involving the screen printing of a radiation curable ink onto the surface of a substrate followed by the radiation cure of the ink. A photoflash circuit board array made by such method is also provided.
Claims9
A method for making a circuit board having conductive circuit elements with a specific resistivity of less than 10 ohm-cm patterned on a nonconductive substrate, which comprises,
- 1. printing a radiation curable ink onto the nonconductive substrate to a desired circuit pattern, and
- 2. effecting the radiation cure of the radiation curable ink, where said radiation curable ink comprises by volume
- A. from about 10% to 60% of an organic resin binder having a viscosity of from 50 to 10,000 centipoises at 25.degree. C., and
- B. from about 90% to 40% of a particulated electrically conductive metal containing material substantially free of metal containing material having an aspect ratio of diameter to thickness of a value greater than 20.
1 more element
Dependencies are inferred from the claim text.