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    • 6. 发明专利
    • Magnetic head for perpendicular magnetic recording that includes sensor for detecting contact with recording medium
    • 用于磁记录的磁头包括用于用记录介质检测接触的传感器
    • JP2012178208A
    • 2012-09-13
    • JP2011200205
    • 2011-09-14
    • Headway Technologies IncSae Magnetics(H K )Ltdヘッドウェイテクノロジーズ インコーポレイテッド新科實業有限公司SAE Magnetics(H.K.)Ltd.
    • SASAKI YOSHITAKAITO HIROYUKISATO KAZUKIIIJIMA ATSUSHI
    • G11B5/31
    • G11B5/1278G11B5/314G11B5/315G11B5/40G11B5/607G11B5/6076
    • PROBLEM TO BE SOLVED: To enable control of the distance between a part of a medium facing surface and a surface of a recording medium, and detection of contact of a part of the medium facing surface with the recording medium, without interruption of protrusion of the part of the medium facing surface.SOLUTION: A magnetic head includes a main magnetic pole 15, a recording shield, a return magnetic path section 30, heaters 82, 92, and a sensor 85 that detects contact of a part of the medium facing surface with a recording medium. The return magnetic path section 30 includes: a yoke layer 31; a coupling part 32 coupling the yoke layer 31 and the recording shield to each other; and a coupling part 35 located away from the medium facing surface 2 and coupling the yoke layer 31 and the main magnetic pole 15 to each other. An end face of the coupling part 32 facing toward the yoke layer 31 includes a center part facing the yoke layer 31, and two side portions located on opposite sides of the center part in a track width direction and in contact with the yoke layer. The sensor 85 is located between the center part and the yoke layer.
    • 要解决的问题:为了能够控制介质面向表面的一部分和记录介质的表面之间的距离,以及检测介质面向表面的一部分与记录介质的接触,而不中断 介质面对表面的一部分突出。 解决方案:磁头包括主磁极15,记录屏蔽,返回磁路部分30,加热器82,92和传感器85,其检测介质面向表面的一部分与记录介质的接触 。 返回磁路部分30包括:磁轭层31; 将轭铁层31和记录罩彼此连接的联接部32; 以及耦合部分35,其位于远离介质面对表面2并且将磁轭层31和主磁极15彼此连接。 耦合部32的朝向磁轭层31的端面包括面向磁轭层31的中心部,以及位于轨道宽度方向上与中心部的相反侧并与磁轭层接触的两个侧部。 传感器85位于中心部分和轭层之间。 版权所有(C)2012,JPO&INPIT
    • 8. 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