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    • 3. 发明专利
    • Recording head and disk device provided with the same
    • 记录头和磁盘装置
    • JP2013171594A
    • 2013-09-02
    • JP2012033161
    • 2012-02-17
    • Toshiba Corp株式会社東芝
    • TAGUCHI TOMOKOYAMADA KENICHIROKOI KATSUHIKOFUNAYAMA TOMOKIFUJITA NORIHITO
    • G11B5/31G11B5/02
    • G11B5/3116G11B2005/0002
    • PROBLEM TO BE SOLVED: To provide a recording head that suppresses degradation or erasure of information having been recorded and makes high recording density possible, and further to provide a disk device provided therewith.SOLUTION: A recording head of a disk device comprises: a main magnetic pole 60; a trailing shield; a recording coil; and a high frequency oscillator 65 provided between a leading end portion of the main magnetic pole 60 and the trailing shield. The main magnetic pole 60 includes a first magnetic pole layer 61a and a second magnetic pole layer 61b laminated at a trailing side of the first magnetic pole layer 61a. The first magnetic pole layer 61a has a narrowing portion 64a and a first leading end portion 66a extending from the narrowing portion 64a. The second magnetic pole layer 61b has a narrowing portion 64b and a second leading end portion 66b extending from the narrowing portion 64b. A width of the second leading end portion 66b in a track direction is narrower than a width of the first leading end portion 66a in the track direction. The high frequency oscillator 65 is provided between the second leading end portion 66b and the trailing shield and has a width in the track direction substantially the same as the width of the second leading end portion 66b in the track direction. A height H1 of the first leading end portion 66a is higher than a height H2 of the second leading end portion 66b.
    • 要解决的问题:提供一种抑制已经记录的信息的劣化或擦除并使得高记录密度成为可能的记录头,并且还提供一种提供其的盘装置。解决方案:盘装置的记录头包括:主 磁极60; 后盾 记录线圈; 以及设置在主磁极60的前端部与后挡板之间的高频振荡器65。 主磁极60包括层压在第一磁极层61a的后侧的第一磁极层61a和第二磁极层61b。 第一磁极层61a具有从变窄部64a延伸的变窄部64a和第一前端部66a。 第二磁极层61b具有从​​变窄部分64b延伸的变窄部分64b和第二前端部分66b。 第二前端部66b的轨道方向的宽度比第一前端部66a的轨道方向的宽度窄。 高频振荡器65设置在第二前端部66b和后屏蔽之间,并且具有与轨道方向上的第二前端部66b的宽度大致相同的轨道方向的宽度。 第一前端部66a的高度H1比第二前端部66b的高度H2高。