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    • 4. 发明专利
    • Magnetic head for perpendicular magnetic recording having main pole and shield
    • 具有主要和屏蔽性能的磁性记录磁头
    • JP2013114740A
    • 2013-06-10
    • JP2012234331
    • 2012-10-24
    • Headway Technologies Incヘッドウェイテクノロジーズ インコーポレイテッドSae Magnetics(H K )Ltd新科實業有限公司SAE Magnetics(H.K.)Ltd.
    • SASAKI YOSHITAKAITO HIROYUKISATO KAZUKITANEMURA SHIGEKIARAKI HIRONORISHIMIZU TATSUYA
    • G11B5/31
    • G11B5/1278G11B5/3116G11B5/3146G11B5/315G11B5/3163
    • PROBLEM TO BE SOLVED: To allow a main pole to produce a write magnetic field of sufficient magnitude while allowing a reduction in length of a magnetic path that passes through the main pole and a return path section that is located on the front side of the main pole in a direction of travel of a recording medium.SOLUTION: A magnetic head includes a coil, a main pole 15, a write shield 16, and a return path section 40. The return path section 40 is located on the front side of the main pole 15 in a direction of travel of a recording medium to thereby define a space S1. The coil includes a first coil element 121A and a plurality of second coil elements 122A and 122B extending to pass through the space S1. The second coil elements 122A and 122B are located on the front side of the first coil element 121A in the direction of travel of the recording medium. The return path section 40 includes a first portion 40A located such that the first coil element 121A is interposed between the first portion 40A and a medium facing surface 100, and a second portion 40B located such that the second coil elements 122A and 122B are interposed between the second portion 40B and the medium facing surface 100.
    • 要解决的问题:为了允许主极产生足够大的写入磁场,同时允许减小通过主极的磁路的长度和位于前侧的返回路径部分 的主极在记录介质的行进方向上。 解决方案:磁头包括线圈,主极15,写入屏蔽16和返回路径部分40.返回路径部分40沿着行进方向位于主极15的前侧 的记录介质,从而限定空间S1。 线圈包括第一线圈元件121A和延伸穿过空间S1的多个第二线圈元件122A和122B。 第二线圈元件122A和122B在记录介质的行进方向上位于第一线圈元件121A的前侧。 返回路径部分40包括第一部分40A,第一部分40A被定位成使得第一线圈元件121A插入在第一部分40A和面向介质的表面100之间,第二部分40B被定位成使得第二线圈元件122A和122B介于 第二部分40B和介质面向表面100.版权所有(C)2013,JPO&INPIT
    • 9. 发明专利
    • Perpendicular magnetic recording head with magnetic return path section
    • 具磁性返回路段的全磁性记录头
    • JP2013229088A
    • 2013-11-07
    • JP2012274306
    • 2012-12-17
    • Headway Technologies Incヘッドウェイテクノロジーズ インコーポレイテッドSae Magnetics(H K )Ltd新科實業有限公司SAE Magnetics(H.K.)Ltd.
    • SASAKI YOSHITAKAITO HIROYUKIARAKI HIRONORITOMITA SEIICHIROSATO KAZUKITANEMURA SHIGEKISHIMIZU TATSUYA
    • G11B5/31
    • G11B5/1278G11B5/17G11B5/3116G11B5/315G11B5/3163
    • PROBLEM TO BE SOLVED: To avoid problems caused by a large area of an end face of a magnetic return path section, which is located on the rear side with respect to a main magnetic pole in a moving direction of a recording medium, being exposed on a medium facing surface.SOLUTION: A magnetic head includes a coil, a mail magnetic pole 15, a shield 16, a magnetic return path section 30, and an accommodating section 50, which are located above an upper surface 1a of a substrate 1. The accommodating section 50 accommodates at least a portion of the magnetic return path section 30. The magnetic return path section 30 is located between the main magnetic pole 15 and the upper surface 1a of the substrate 1 and connects a portion of the main magnetic pole 15 away from a medium facing surface 80 with the shield 16 to form a space for a portion of the coil to pass through. The accommodating section 50 includes an intervening section 50A which stands between the magnetic return path section 30 and the medium facing surface 80, and the intervening section 50A has a sloped surface 50Aa facing the magnetic return path section 30. The magnetic return path section 30 includes a sloped section 31B which is located between a portion of the coil and the sloped surface 50Aa and extending along the sloped surface 50Aa.
    • 要解决的问题:为了避免在记录介质的移动方向上相对于主磁极位于后侧的磁性返回路径部分的大面积面积引起的问题被暴露在 面向介质的表面。解决方案:磁头包括位于基板1的上表面1a上方的线圈,邮磁磁极15,屏蔽层16,磁返回路径部分30和容纳部分50。 容纳部50容纳回磁通路部30的至少一部分。磁返回路径部30位于主磁极15与基板1的上表面1a之间,并且将主磁极15的一部分 远离具有屏蔽16的介质面向表面80,以形成用于线圈的一部分通过的空间。 容纳部分50包括位于磁返回路径部分30和介质相对表面80之间的中间部分50A,并且中间部分50A具有面向磁返回路径部分30的倾斜表面50Aa。磁返回路径部分30包括 位于线圈的一部分和倾斜表面50Aa之间并沿着倾斜表面50Aa延伸的倾斜部分31B。