Vertical writing type magnetic head
First Claim
Patent Images
1. A vertical writing type magnetic head comprising:
- a substrate;
a bottom pole formed on the substrate; and
a top pole aligned with and spaced a predetermined distance apart from the bottom pole, wherein the bottom pole at an edge intended to be adjacent to magnetic media has a trapezoidal shape and is narrower at its largest width than the smallest width of the top pole at an edge, having a trapezoidal shape, intended to be adjacent to the magnetic media.
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Abstract
Provided is a vertical writing type magnetic head including a substrate, a bottom pole formed on the substrate, and a top pole aligned with and spaced a predetermined distance apart from the bottom pole, wherein the bottom pole has a narrower width than the top pole. The magnetic write head is constructed such that the width of a bottom pole is narrower than that of a top pole, thereby reducing extension of a magnetic field at sides of a top pole and effectively preventing erasure of information of an adjacent track due to the bottom pole overlapping the adjacent track when there is a constructional skew in a hard disk drive.
22 Citations
16 Claims
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1. A vertical writing type magnetic head comprising:
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a substrate;
a bottom pole formed on the substrate; and
a top pole aligned with and spaced a predetermined distance apart from the bottom pole, wherein the bottom pole at an edge intended to be adjacent to magnetic media has a trapezoidal shape and is narrower at its largest width than the smallest width of the top pole at an edge, having a trapezoidal shape, intended to be adjacent to the magnetic media. - View Dependent Claims (2, 3, 4, 5)
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6. A vertical writing type magnetic head comprising:
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a substrate;
a bottom pole formed on the substrate; and
a top pole aligned with and spaced a predetermined distance apart from the bottom pole, wherein a side of the bottom pole is formed at an acute angle with respect to a side of the bottom pole adjacent to the top pole, said acute angle being equal to or less than a skew angle of tracks of a recording media to prevent overlapping of adjacent tracks by the bottom pole due to skew of a said magnetic head with respect to tracks. - View Dependent Claims (7, 8, 9, 10)
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11. A vertical writing type magnetic head comprising:
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a substrate;
a bottom pole formed on the substrate; and
a top pole aligned with and spaced a predetermined distance apart from the bottom pole, wherein the bottom pole at an edge intended to be adjacent to magnetic media has a trapezoidal shape and the top pole at an edge intended to be adjacent to the magnetic media has a trapezoidal shape. - View Dependent Claims (12, 13, 14, 15, 16)
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Specification