Thin-film magnetic head, head gimbal assembly, and hard disk drive
AssigneeTDK Corporation
InventorsNoboru Yamanaka, Norikazu Ota
Life of this patent
Estimating the term…
Abstract
A thin-film magnetic head comprises at least one of a magnetoresistive device for reading and an electromagnetic transducer device for writing, and a heating element provided in the head body part. The heating element has an up portion meandering between an origin and a halfway point and a down portion meandering along the up portion from the halfway point to an end positioned in the vicinity of the origin, and adapted to generate heat when energized.
Claims19
A thin-film magnetic head comprising:
- at least one of a magnetoresistive device for reading and an electromagnetic transducer device for writing;
- and
- a heating element having an up portion meandering between an origin and a halfway point and a down portion meandering along the up portion from the halfway point to an end positioned in the vicinity of the origin, and adapted to generate heat when energized.
A head gimbal assembly comprising a base, a thin-film magnetic head formed on the base, and a gimbal adapted to fix the base,
- wherein the thin-film magnetic head comprises:
- at least one of a magnetoresistive device for reading and an electromagnetic transducer device for writing;
- and
- a heating element having an up portion meandering between an origin and a halfway point and a down portion meandering along the up portion from the halfway point to an end positioned in the vicinity of the origin, and adapted to generate heat when energized.
A hard disk drive comprising a base, a thin-film magnetic head formed on the base, and a recording medium opposed to the thin-film magnetic head,
- wherein the thin-film magnetic head comprises:
- at least one of a magnetoresistive device for reading and an electromagnetic transducer device for writing;
- and
- a heating element having an up portion meandering between an origin and a halfway point and a down portion meandering along the up portion from the halfway point to an end positioned in the vicinity of the origin, and adapted to generate heat when energized.
A thin-film magnetic head comprising:
- at least one of a magnetoresistive device for reading and an electromagnetic transducer device for writing;
- and
- a heating element comprising a plurality of unit portions, each unit portion having an up portion extending from a first point to a second point, a down portion extending along the up portion from a third point near the second point to a fourth point near the first point, and a turn portion connecting the second point and the third point, said plurality of unit portions being juxtaposed in a direction crossing an extending direction of the up portion, and connecting portions, each connecting portion connecting the first point and the fourth point adjacent to each other between the unit portions, the heating element being adapted to generate heat when energized;
- wherein in the heating element a distance between the unit portions is longer than a distance between the up portion and the down portion in each unit portion.
A head gimbal assembly comprising a base, a thin-film magnetic head formed on the base, and a gimbal adapted to fix the base,
- wherein the thin-film magnetic head comprises:
- at least one of a magnetoresistive device for reading and an electromagnetic transducer device for writing;
- and
- a heating element comprising a plurality of unit portions, each unit portion having an up portion extending from a first point to a second point, a down portion extending along the up portion from a third point near the second point to a fourth point near the first point, and a turn portion connecting the second point and the third point, said plurality of unit portions being juxtaposed in a direction crossing an extending direction of the up portion, and connecting portions, each connecting portion connecting the first point and the fourth point adjacent to each other between the unit portions, the heating element being adapted to generate heat when energized;
- wherein in the heating element a distance between the unit portions is longer than a distance between the up portion and the down portion in each unit portion.
A hard disk drive comprising a base, a thin-film magnetic head formed on the base, and a recording medium opposed to the thin-film magnetic head,
- wherein the thin-film magnetic head comprises:
- at least one of a magnetoresistive device for reading and an electromagnetic transducer device for writing;
- and
- a heating element comprising a plurality of unit portions, each unit portion having an up portion extending from a first point to a second point, a down portion extending along the up portion from a third point near the second point to a fourth point near the first point, and a turn portion connecting the second point and the third point, said plurality of unit portions being juxtaposed in a direction crossing an extending direction of the up portion, and connecting portions, each connecting portion connecting the first point and the fourth point adjacent to each other between the unit portions, the heating element being adapted to generate heat when energized;
- wherein in the heating element a distance between the unit portions is longer than a distance between the up portion and the down portion in each unit portion.
Dependencies are inferred from the claim text.