Appeal No. 1998-1571
Application No. 08/022,199
APPENDIX
9. A method for producing a cylindrical coil comprising
the steps of:
(i) imparting an electroless plating reaction catalyst to
at least an outside surface of an insulation cylindrical
substrate having a heat conductivity of 4.5 to 8.4 W/mEC;
(ii) deactivating the electroless plating reaction
catalyst in the form of a continuous winding on a side surface
of the insulation cylindrical substrate by irradiating a
predetermined portion of the electroless plating reaction
catalyst by a laser beam, whereby groove portions are formed
by removing a part of the substrate corresponding to the
groove portions, from which the electroless plating reaction
catalyst is removed, and the electroless plating reaction
catalyst of sides of the groove portions are deactivated;
(iii) applying an electroless plating solution to the
insulation cylindrical substrate; and
(iv) allowing the electroless plating reaction catalyst
to react with an electroless plating solution.
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