公开(公告)号：US20120236431A1

公开(公告)日：2012-09-20

申请号：US13047304

申请日：2011-03-14

申请人： Kei HIRATA ,  Hiroshi KIYONO ,  Osamu NAKADA ,  Kenkichi ANAGAWA

发明人： Kei HIRATA ,  Hiroshi KIYONO ,  Osamu NAKADA ,  Kenkichi ANAGAWA

IPC分类号： G11B21/02 ,  G11B21/04

CPC分类号： G11B5/315 ,  G11B5/012 ,  G11B5/1278 ,  G11B5/3116

摘要： A magnetic disk device includes: a recording medium provided with a plurality of write tracks; a magnetic write head including a magnetic pole, side shields, and a leading shield, a distance from the magnetic pole to each of the side shields being maintained to be uniform with a gap layer therebetween, and a distance from the magnetic pole to the leading shield being maintained to be uniform with a gap layer therebetween; and a control section rotating the recording medium, and allowing magnetic information to be recorded on the recording medium while allowing the magnetic write head to travel in a direction from an inner write track toward an outer write track or in a direction from the outer write track toward the inner write track, across write tracks in the recording medium. With such a configuration, format efficiency may be improved, and a width of an erase band on a magnetic disk may be minimized. Therefore, surface recording density of a recording medium may be improved without reducing an effective write track width.

摘要翻译： 磁盘装置包括：设置有多个写入磁道的记录介质; 包括磁极，侧屏蔽和前屏蔽的磁写头，从磁极到每个侧屏的距离保持均匀，其间具有间隙层，并且从磁极到前导的距离 保持其间的间隙均匀的护罩; 以及控制部分，使记录介质旋转，并且允许磁信息被记录在记录介质上，同时允许磁性写入头沿着从内部写入磁道朝向外部写入磁道或从外部写入磁道的方向行进 朝向内部写入轨道，跨越记录介质中的写入轨迹。 利用这种配置，可以提高格式效率，并且可以使磁盘上的擦除带的宽度最小化。 因此，可以提高记录介质的表面记录密度，而不会降低有效的写入磁道宽度。

公开(公告)号：US20110310510A1

公开(公告)日：2011-12-22

申请号：US12819552

申请日：2010-06-21

申请人： Kenkichi ANAGAWA ,  Katsuki Kurihara ,  Takeo Kagami ,  Kei Hirata ,  Minoru Ota

发明人： Kenkichi ANAGAWA ,  Katsuki Kurihara ,  Takeo Kagami ,  Kei Hirata ,  Minoru Ota

IPC分类号： G11B5/10

CPC分类号： G11B5/3146 ,  G11B5/1278 ,  G11B5/235 ,  G11B5/315

摘要： A main magnetic-pole layer is provided with, at the tip end portion thereof, a trailing shied on the trailing side via a non-magnetic gap layer, and the non-magnetic gap layer includes therein one or more magnetic layers. This magnetic layer appropriately controls the amount of magnetic fluxes coming from the tip end portion of the main magnetic-pole layer for capturing into the trailing shield because the magnetic fluxes coming from the tip end portion of the main magnetic-pole layer go through the magnetic layer before being captured into the trailing shield.

摘要翻译： 主磁极层在其末端部分经由非磁隙层在后侧设置有尾部，非磁性间隙层包括一个或多个磁性层。 该磁性层适当地控制来自主磁极层的前端部分的磁通量，用于捕获到后屏蔽件中，因为来自主磁极层的末端部分的磁通量通过磁 在被捕获到后盾之前。

公开(公告)号：US20090059438A1

公开(公告)日：2009-03-05

申请号：US11848778

申请日：2007-08-31

申请人： Kenkichi ANAGAWA ,  Norikazu OTA

发明人： Kenkichi ANAGAWA ,  Norikazu OTA

IPC分类号： G11B5/33 ,  B05D5/12

CPC分类号： G11B5/1278 ,  G11B5/3116 ,  G11B5/3146 ,  G11B5/315 ,  G11B5/3163 ,  Y10T29/49048

摘要： A thin-film magnetic head with a perpendicular magnetic recording structure includes a main pole layer, a nonmagnetic gap layer, and an auxiliary pole layer facing the main pole layer via the nonmagnetic gap layer. A surface of a top end section of the main pole layer has an inclined step that slopes from a lamination plane of the layers. The surface faces a top end section of the auxiliary pole layer. The top end section of the auxiliary pole layer has side shield sections at a position that is not exposed to an ABS. The side shield sections faces at least part of side surfaces in a track-width direction, of the main pole layer so as to cover at least part of the inclined step.

摘要翻译： 具有垂直磁记录结构的薄膜磁头包括主极层，非磁性间隙层和经由非磁性间隙层面向主极层的辅助极层。 主极层的顶端部分的表面具有从层的层叠平面倾斜的倾斜台阶。 表面面对辅助极层的顶端部分。 辅助极层的顶端部分在不暴露于ABS的位置处具有侧屏蔽部分。 侧屏蔽部分面向主极层的轨道宽度方向上的侧表面的至少一部分，以便覆盖至少部分倾斜台阶。

公开(公告)号：US20080013210A1

公开(公告)日：2008-01-17

申请号：US11769497

申请日：2007-06-27

申请人： Kenkichi ANAGAWA ,  Hiraku HIRABAYASHI

发明人： Kenkichi ANAGAWA ,  Hiraku HIRABAYASHI

IPC分类号： G11B5/127

CPC分类号： G11B5/1278 ,  G11B5/11 ,  G11B5/3116 ,  G11B5/3136 ,  G11B5/3143

摘要： Provided is a thin-film magnetic having improved write characteristics in the high-frequency band. The head comprises an electromagnetic coil element comprising upper and lower magnetic layers, a write gap layer and a write coil layer, and in the electromagnetic coil element, at least one non-magnetic layer is provided within the upper magnetic layer, and further, an upper surface, a lower surface, at least a portion of a front surface and at least a portion of a rear surface of the non-magnetic layer are covered with magnetic material of at least one of the upper magnetic layer and the lower magnetic layer.

摘要翻译： 提供了在高频带中具有改进的写入特性的薄膜磁体。 头部包括包括上下磁性层的电磁线圈元件，写入间隙层和写入线圈层，并且在电磁线圈元件中，在上部磁性层内提供至少一个非磁性层，此外， 上表面，下表面，非磁性层的前表面的至少一部分和后表面的至少一部分被上磁性层和下磁性层中的至少一个的磁性材料覆盖。

公开(公告)号：US20080239584A1

公开(公告)日：2008-10-02

申请号：US11694310

申请日：2007-03-30

申请人： Kenkichi ANAGAWA ,  Hiraku Hirabayashi

发明人： Kenkichi ANAGAWA ,  Hiraku Hirabayashi

IPC分类号： G11B5/33

CPC分类号： G11B5/3146 ,  G11B5/11 ,  G11B5/1278 ,  G11B5/3116 ,  G11B5/3912

摘要： Provided is a thin-film magnetic head having an MR element in which the tolerance of external magnetic field is improved even under the condition that shields have smaller areas. The head comprises: an MR element comprising lower and upper shield layers provided so as to sandwich an MR multilayer, one edges of the layers reaching a head end surface on an ABS side; and an electromagnetic transducer comprising main and auxiliary magnetic pole layers, one edges of the layers reaching the head end surface, wherein at least one laminate shield layer for tolerating external magnetic field is provided adjacently on one side or on both sides in a track width direction of at least one layer out of the upper and lower shield layers and the auxiliary magnetic pole layer, and one edge of the at least one laminate shield layer reaching the head end surface.

摘要翻译： 提供一种具有MR元件的薄膜磁头，其中即使在屏蔽具有较小面积的条件下，外部磁场的公差也得到改善。 头包括：MR元件，包括设置成夹住MR多层的下屏蔽层和上屏蔽层，所述层的一个边缘到达ABS侧上的头端表面; 以及包括主磁极层和辅助磁极层的电磁换能器，所述层的一个边缘到达所述头端面，其中，在轨道宽度方向的一侧或两侧相邻地设置有用于容纳外部磁场的至少一个层叠屏蔽层 的上下屏蔽层和辅助磁极层中的至少一层，并且至少一层压屏蔽层的一个边缘到达头端表面。