Magnetic head for magnetooptical recording apparatus
AssigneeCanon Kabushiki Kaisha
InventorKazuyoshi Ishii
Life of this patent
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Abstract
A magnetic head for magnetooptical recording is provided with a slider base, a core made of a magnetic material, and a coil composed of a spiral thin film conductor. The core is mounted on the slider base and has a main pole. A thin plate-shaped cover member is provided to surround the main pole while exposing the upper end face thereof. The cover member is composed of an antiabrasive material. An air bearing face or a sliding face is formed on the surface of the cover member. The coil is formed on the rear surface of the cover member.
Claims16
A magnetic head for magnetooptical recording comprising:
- a slider base;
- a core comprising a magnetic material, mounted on said slider base, said core having a main pole;
- a thin plate-shaped cover member which surrounds the periphery of said main pole, an upper end face of which is exposed, said cover member being composed of an antiabrasive material and a front surface of said cover member being arranged to face a magnetooptical recording medium;
- and
- a coil composed of a thin film conductor formed on a rear surface of said cover member, said coil being formed spirally by patterning.
A magnetooptical recording apparatus comprising:
- an optical head for irradiating a magnetooptical recording medium with a light beam;
- and
- a magnetic head for applying a magnetic field modulated by an information signal to the recording medium, said magnetic head comprising:
- (1) a slider base;
- (2) a core comprising a magnetic material mounted on said slider base, said core having a main pole;
- (3) a thin plate-shaped cover member which surrounds the periphery of said main pole, an upper end surface of which is exposed, said cover member being composed of an antiabrasive material add a front surface of said cover member being arranged to face a magnetooptical recording medium;
- and
- (4) a coil composed of a thin film conductor formed on a rear surface of said cover member, said coil being formed spirally by patterning.
A magnetic head for magnetooptical recording comprising:
- a slider base;
- a core comprising a magnetic material mounted on said slider base, said core having a main pole;
- a thin plate-shaped cover member which covers an upper end face of said main pole, said cover member being composed of an antiabrasive material and a front surface of said cover member being arranged to face a magnetooptical recording medium;
- and
- a coil composed of a thin film conductor formed on a rear surface of said cover member, said coil being formed spirally by patterning.
A magnetooptical recording apparatus comprising:
- an optical head for irradiating a magnetooptical recording medium with a light beam;
- and
- a magnetic head for applying a magnetic field modulated by an information signal to the recording medium, said magnetic head comprising:
- (1) a slider base;
- (2) a core comprising a magnetic material mounted on said slider base, said core having a main pole;
- (3) a thin plate-shaped cover member which covers an upper end face of said main pole, said cover member being composed of an antiabrasive material and a front surface of said cover member being arranged to face a magnetooptical recording medium;
- and
- (4) a coil composed of a thin film conductor formed on a rear surface of said cover member, said coil being formed spirally by patterning.
Dependencies are inferred from the claim text.