To make a magnetic force generated between two combs constant to a relative motion of the combs.
The comb structure has a pair of combs 21 and 22, a circuit 23 for magnetically coupling the combs 21 and 22, a coil 24 wound to an optional position of the circuit and a power source 25 coupled to the coil. The combs meshed via a gap S are coupled by the circuit 23. The combs are driven by a magnetomotive force generated at the coil 24. A force acting to between the combs is stronger by several hundreds times than a force of an electrostatic force comb structure and acts constantly with respect to a move distance of the combs, thus facilitating controlling a position and a force. Since the force is large, the structure can be driven with an optional frequency not at a resonance point. Moreover, since the structure can be manufactured in an equal process to an HDD(hard disk drive) head, the actuator and the head can be manufactured easily integrally.
CHOI JAE-JOON
JEONG HEE-MOON
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