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US 4,901,178 AGranted
Thin film magnetic head
AssigneeSony Corporation
InventorsTomio Kobayashi, Iwao Abe, Kazuo Kashiwa, Yukihiro Aizawa, Hiroyuki Suzukawa
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AssigneeSony Corporation
InventorsTomio Kobayashi, Iwao Abe, Kazuo Kashiwa, Yukihiro Aizawa, Hiroyuki Suzukawa
Estimating the term…
A thin film magnetic head whereby the inclined surface is formed with a prescribed angle relative to the upper surface of the substrate in the vicinity of a slide contact surface thereof with a magnetic recording medium, the magnetic gap is formed on the magnetic film on the inclined surface, and the azimuth of the magnetic gap is set by the inclined surface. By forming grooves or protrusions on the substrate, the inclined surface by which the azimuth of the magnetic gap is set is defined. A coil conductor is formed on the flat portion of the upper surface of the substrate. With the thin film magnetic head presented by this invention, a double azimuth thin film magnetic head of a multi-channel thin film magnetic head can be easily provided.
A thin film magnetic head including a magnetic substrate having a generally planar upper surface, a coil conductor and an upper magnetic film that are successively laminated on said upper generally planar surface of said magnetic substrate with the interposition of respective insulating films above and below said coil conductor, and at least one inclined surface formed on said substrate in the vicinity of a slide contact surface thereof with a magnetic recording medium, said inclined surface being inclined at a predetermined angle relative to said upper surface, said upper magnetic film being formed on said inclined surface for setting the azimuth of a magnetic gap formed between said substrate and said upper magnetic film.
A thin film magnetic head inclining a magnetic substrate having a generally planar upper surface, a lower magnetic film, a coil conductor, and an upper magnetic film that are successively laminated on said upper generally planar surface of said magnetic substrate with the interposition of respective insulating films above and below said coil conductor, and at least one inclined surface formed on said substrate in the vicinity of a sliding contact surface thereof with a magnetic recording medium, said surface being inclined at a predetermined angle relative to said upper surface, said lower and upper magnetic films being formed on said inclined surfaces to set the azimuth of a magnetic gap formed between said upper and lower magnetic films.
Dependencies are inferred from the claim text.