Magnetic head slider inspection device
AssigneeHitachi, Ltd.
InventorsMasaru Furukawa, Yukio Kato, Junguo Xu
Life of this patent
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Abstract
A magnetic head slider inspection device including a motor unit for revolving a disk medium, a slider unit provided with a reproducing head, which is levitated from a surface of the disk medium under force generated by the revolving disk medium, a magnetic field generator positioned at an opposite side of the disk medium with respect to the slider unit for generating a magnetic field substantially perpendicular to the disk medium surface, and a circuit unit for generating the magnetic field from the magnetic field generator, and measuring a resistance value of the reproducing head levitated from the disk medium surface.
Claims13
A magnetic head slider inspection device comprising:
- a motor unit for revolving a disk medium;
- a slider unit provided with a reproducing head, which is levitated from a surface of the disk medium under force generated by the revolving disk medium;
- a magnetic field generator positioned at an opposite side of the disk medium with respect to the slider unit for generating a magnetic field substantially perpendicular to the disk medium surface;
- and
- a circuit unit for generating the magnetic field from the magnetic field generator, and measuring a resistance value of the reproducing head levitated from the disk medium surface,
- wherein the magnetic field generator is an electromagnet having a conductive wire wound around into a coil, to which electric current is applied for temporarily generating the magnetic field;
- and
- the circuit unit includes an electric circuit for applying the electric current to the electromagnet to generate the magnetic field from the electromagnet so that the resistance value of the reproducing head levitated from the disk medium surface is measured.
Dependencies are inferred from the claim text.