公开(公告)号：US07158345B2

公开(公告)日：2007-01-02

申请号：US11016949

申请日：2004-12-20

申请人： Kiyoshi Sato ,  Toshinori Watanabe ,  Hideki Gochou ,  Kiyoshi Kobayashi ,  Toru Takahashi ,  Hisayuki Yazawa ,  Hiromi Ikegami, legal representative ,  Chiaki Ikegami, legal representative

发明人： Masaki Ikegami, deceased

IPC分类号： G11B5/127

CPC分类号： G11B5/3116 ,  G11B5/312 ,  G11B5/313 ,  G11B5/3163

摘要： A thin-film magnetic head includes a lower core layer; a recording core formed on the lower core layer and exposed at a face surface facing a recording medium, the recording core including a gap layer, an upper pole layer, and optionally, a lower pole layer; an upper core layer magnetically coupled to the upper pole layer; and a coil. A tip surface of the upper core layer at the face surface is set back from the face surface in the height direction, and the tip surface is an inclined surface or a curved surface in which the depth gradually increases from the track width direction. A method for fabricating a thin-film magnetic head is also disclosed.

公开(公告)号：US20050168870A1

公开(公告)日：2005-08-04

申请号：US11016949

申请日：2004-12-20

申请人： Kiyoshi Sato ,  Toshinori Watanabe ,  Hideki Gochou ,  Kiyoshi Kobayashi ,  Toru Takahashi ,  Hisayuki Yazawa ,  Masaki Ikegami ,  Hiromi Ikegami ,  Chiaki Ikegami

发明人： Kiyoshi Sato ,  Toshinori Watanabe ,  Hideki Gochou ,  Kiyoshi Kobayashi ,  Toru Takahashi ,  Hisayuki Yazawa ,  Masaki Ikegami ,  Hiromi Ikegami ,  Chiaki Ikegami

IPC分类号： G11B5/31 ,  G11B5/147

CPC分类号： G11B5/3116 ,  G11B5/312 ,  G11B5/313 ,  G11B5/3163

摘要： A thin-film magnetic head includes a lower core layer; a recording core formed on the lower core layer and exposed at a face surface facing a recording medium, the recording core including a gap layer, an upper pole layer, and optionally, a lower pole layer; an upper core layer magnetically coupled to the upper pole layer; and a coil. A tip surface of the upper core layer at the face surface is set back from the face surface in the height direction, and the tip surface is an inclined surface or a curved surface in which the depth gradually increases from the track width direction. A method for fabricating a thin-film magnetic head is also disclosed.

摘要翻译： 薄膜磁头包括下芯层; 记录芯，形成在下芯层上并在面向记录介质的表面上暴露，所述记录芯包括间隙层，上极层和可选的下极层; 磁性地耦合到上极层的上芯层; 和线圈。 上表面的上芯层的顶表面在高度方向上从表面返回，并且尖端表面是倾斜表面或深度从轨道宽度方向逐渐增加的曲面。 还公开了一种用于制造薄膜磁头的方法。

公开(公告)号：US07167340B2

公开(公告)日：2007-01-23

申请号：US09802314

申请日：2001-03-08

申请人： Kiyoshi Sato ,  Toshinori Watanabe ,  Hideki Gochou ,  Kiyoshi Kobayashi ,  Toru Takahashi ,  Hisayuki Yazawa ,  Hiromi Ikegami ,  by Chiaki Ikegami, legal represenative

发明人： Masaki Ikegami

IPC分类号： G11B5/31

CPC分类号： G11B5/3116 ,  G11B5/312 ,  G11B5/313 ,  G11B5/3163

摘要： A thin-film magnetic head includes a lower core layer; a recording core formed on the lower core layer and exposed at a face surface facing a recording medium, the recording core including a gap layer, an upper pole layer, and optionally, a lower pole layer; an upper core layer magnetically coupled to the upper pole layer; and a coil. A tip surface of the upper core layer at the face surface is set back from the face surface in the height direction, and the tip surface is an inclined surface or a curved surface in which the depth gradually increases from the track width direction. A method for fabricating a thin-film magnetic head is also disclosed.

摘要翻译： 薄膜磁头包括下芯层; 记录芯，形成在下芯层上并在面向记录介质的表面上暴露，所述记录芯包括间隙层，上极层和可选的下极层; 磁性地耦合到上极层的上芯层; 和线圈。 上表面的上芯层的顶表面在高度方向上从表面返回，并且尖端表面是倾斜表面或深度从轨道宽度方向逐渐增加的曲面。 还公开了一种用于制造薄膜磁头的方法。

公开(公告)号：US07088549B1

公开(公告)日：2006-08-08

申请号：US09632875

申请日：2000-08-04

申请人： Hisayuki Yazawa ,  Naruaki Oki ,  Kiyoshi Kobayashi ,  Akira Koyama ,  Yoshihiro Kanada ,  Hiromi Ikegami, legal representative ,  Chiaki Ikegami, legal representative

发明人： Masaki Ikegami, deceased

IPC分类号： G11B5/147

CPC分类号： G11B31/02 ,  G11B5/23 ,  G11B5/3116 ,  G11B5/3133

摘要： A gap depth determining insulating layer is formed on a lower core layer. A curved face is formed on a front edge face of the gap depth determining insulating layer so as to gradually depart from an ABS surface from the bottom at the lower core layer to the top of the curved face. A back end of an upper magnetic layer can be formed on the gap depth determining insulating layer, whereby the volume of the upper magnetic layer can be increased while a gap depth is maintained at a predetermined length.

摘要翻译： 间隙深度确定绝缘层形成在下芯层上。 在间隙深度确定用绝缘层的前缘面上形成弯曲面，从而使ABS表面从下芯层的底部逐渐离开到曲面顶部。 可以在间隙深度确定绝缘层上形成上磁性层的后端，从而可以在间隙深度保持预定长度的同时增加上磁性层的体积。