Patent ID: 7197815

Claim:
A method of manufacturing an electromagnetic actuator provided with a core with a coil wound around; a stator magnetically coupled at both ends of said core; a movable element that can be displaced relative to said stator; and a supporting means for supporting said movable element, said stator and said movable element each having a projection and a depression perpendicular to their respective displacement directions and being placed in such a way that the projection and depression of said stator engage with the projection and depression of said movable element, wherein a process of manufacturing said stator, said movable element and said supporting means comprises: a step of forming a sacrificial layer on a substrate; a step of forming an electrode layer on said substrate and said sacrificial layer; a step of forming an insulated female mold layer on said electrode layer, in which step openings are formed in a photoresist layer for making said core, said stator and said movable element; a step of electroplating a magnetic layer in said openings of said insulated female mold layer on said electrode layer to make said core, said stator and said movable element of a same material; and a step of removing said insulated female mold layer and said sacrificial layer.