US 6,982,932 B2 | ||
Recording/reproducing head and recording/reproducing apparatus incorporating the same | ||
Hiroshi Sakakima, Kyoto (Japan); Masahiro Birukawa, Hirakata (Japan); Kazuo Yokoyama, Osaka (Japan); and Masayoshi Hiramoto, Nara (Japan) | ||
Assigned to Matsushita Electric Industrial Co., Ltd., Kadoma (Japan) | ||
Filed on Sep. 10, 2003, as Appl. No. 10/659,964. | ||
Application 10/659964 is a division of application No. 10/293420, filed on Nov. 12, 2002, granted, now 6,650,598. | ||
Application 10/293420 is a division of application No. 09/603072, filed on Jun. 26, 2000, granted, now 6,504,796. | ||
Claims priority of application No. 11-177911 (JP), filed on Jun. 24, 1999; application No. 11-254417 (JP), filed on Sep. 08, 1999; and application No. 2000-189846 (JP), filed on Jun. 23, 2000. | ||
Prior Publication US 2004/0047080 A1, Mar. 11, 2004 | ||
Int. Cl. G11B 11/00 (2006.01) |
U.S. Cl. 369—13.17 | 5 Claims |
1. A recording/reproducing apparatus comprising:
a first magnetic head for recording a signal onto a recording medium; and
a second magnetic head for reproducing the signal recorded on the recording medium; wherein:
the first magnetic head comprises:
a first substrate;
a first magnetic head core provided on the first substrate, having a first magnetic gap; and
a coil provided in such a manner that at least a portion of the first magnetic head core is surrounded by the coil,
wherein the first magnetic head core is provided in such a manner that a thickness direction of the first magnetic head core
around the first magnetic gap is substantially the same as a track width direction of the recording medium; and
the second magnetic head comprises:
a second substrate;
a second magnetic head core provided on the second substrate, having a second magnetic gap; and
a first magnetoresistance device provided on the second magnetic head core,
wherein the first magnetoresistance device comprises:
an insulating layer provided on the second magnetic head core; and
a pinned layer provided on a side opposite to the second magnetic head core of the insulating layer, wherein a magnetization
direction is not easily rotated in the pinned layer,
wherein the second magnetic head core comprises a soft magnetic layer provided at a position corresponding to the second insulating
layer; and the soft magnetic layer functions as a free layer of the first magnetoresistance device, wherein a magnetization
direction is easily rotated in the free layer.
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