Patent ID: 6820323
Filing Date: 2004-11-23
Classification: H01F,Y10T

Abstract:
A method of firing magnetic cores comprising the steps of:providing a plurality of flattened-ring compact bodies made of a magnetic material and having flattened through holes; arranging each of the plurality of flattened-ring compact bodies so that axes of the through holes are arranged horizontally; attaching a powder made of an organic material to an outer surface of the plurality of flattened-ring compact bodies; attaching the plurality of flattened-ring compact bodies to one another so that the axes of the flattened through-holes are vertically arranged; firing the plurality of flattened-ring compact bodies while the powder is interposed between the adjacent flattened-ring compact bodies such that said powder is vaporized during the firing step; and separating said plurality of flattened-ring compact bodies from each other; wherein in the step of attaching the plurality of flattened-ring compact bodies to one another, a bar is attached only to each of a pair of sides of the plurality of flattened-ring compact bodies.