公开(公告)号：US07154707B2

公开(公告)日：2006-12-26

申请号：US10805408

申请日：2004-03-22

申请人： Yuichi Watabe ,  Norikazu Ota ,  Yasuyuki Notsuke ,  Susumu Aoki ,  Tetsuya Roppongi ,  Naoto Matono

发明人： Yuichi Watabe ,  Norikazu Ota ,  Yasuyuki Notsuke ,  Susumu Aoki ,  Tetsuya Roppongi ,  Naoto Matono

IPC分类号： G11B5/127

CPC分类号： G11B5/3116 ,  G11B5/313 ,  G11B5/3967

摘要： Provided is a thin film magnetic head capable of securing recording characteristics even in the case where a return pole layer is disposed on a medium-outgoing side of the pole layer. The return yoke layer is disposed on a trailing side of the pole layer, and a neck height NH is within a range of NH≦W1 (a width of a front end portion in a main pole layer)+0.05 μm, and a height ratio (a ratio of the neck height NH to a throat height TH) NH/TH is within a range of 0.5

摘要翻译： 提供了即使在极性层的介质输出侧设置返回极层的情况下也能够确保记录特性的薄膜磁头。 返回轭层设置在极层的后侧，颈部高度NH在NH <= W 1（主极层的前端部的宽度）+0.05μm的范围内，并且 高度比（颈部高度NH与喉部高度TH的比）NH / TH在0.5

公开(公告)号：US07061719B2

公开(公告)日：2006-06-13

申请号：US10673333

申请日：2003-09-30

申请人： Naoto Matono ,  Norikazu Ota ,  Yuichi Watabe ,  Susumu Aoki ,  Yasuyuki Notsuke

发明人： Naoto Matono ,  Norikazu Ota ,  Yuichi Watabe ,  Susumu Aoki ,  Yasuyuki Notsuke

IPC分类号： G11B5/147

CPC分类号： B82Y25/00 ,  B82Y10/00 ,  G11B5/3116 ,  G11B5/313 ,  G11B5/3163 ,  G11B5/3166 ,  G11B5/3903 ,  G11B5/3909 ,  G11B5/3967 ,  G11B2005/3996

摘要： A thin film magnetic head which has a thin film coil for generating a magnetic flux and a magnetic pole layer for emitting the magnetic flux generated by the thin film coil toward a recording medium. The magnetic pole layer having a stacked structure including a main magnetic pole layer, an auxiliary magnetic pole layer, and a non-magnetic pole layer. The main magnetic pole layer is disposed so as to be exposed in a recording medium facing surface which faces the recording medium. The auxiliary magnetic pole layer has one end face recessed from the recording medium facing surface and which is disposed so as to face a part of the main magnetic pole layer. The non-magnetic layer is disposed so as to be sandwiched between the main magnetic pole layer and the auxiliary magnetic pole layer.

摘要翻译： 一种薄膜磁头，其具有用于产生磁通的薄膜线圈和用于将由薄膜线圈产生的磁通朝向记录介质发射的磁极层。 具有包括主磁极层，辅助磁极层和非磁极层的堆叠结构的磁极层。 主磁极层被设置为暴露在面向记录介质的面向记录介质的表面上。 辅助磁极层具有从记录介质相对表面凹陷的一个端面并且被设置为面对主磁极层的一部分。 非磁性层被设置成夹在主磁极层和辅助磁极层之间。

公开(公告)号：US07453668B2

公开(公告)日：2008-11-18

申请号：US11252038

申请日：2005-10-18

申请人： Susumu Aoki ,  Reiichi Kurumisawa ,  Norikazu Ota ,  Yasuyuki Notsuke ,  Yuichi Watabe

发明人： Susumu Aoki ,  Reiichi Kurumisawa ,  Norikazu Ota ,  Yasuyuki Notsuke ,  Yuichi Watabe

IPC分类号： G11B5/127

CPC分类号： G11B5/1278 ,  G11B5/3116 ,  G11B5/3163 ,  Y10T29/49046

摘要： The present invention provides a method of manufacturing a thin film magnetic head capable of assuring recording characteristics by determining throat height with high precision. A TH specifying layer is formed so as to extend to a position P1 while being adjacent to a gap layer, and an auxiliary insulating layer is similarly formed so as to extend from the position P1 while being adjacent to the gap layer and specify throat height on the basis of the position P1. After that, a main insulating layer is formed so as to cover a thin film coil on the auxiliary insulating layer, and a yoke layer is formed so as to extend while being partially on the TH specifying layer. The throat height is determined accurately and stably on the basis of the position P1 by the auxiliary insulating layer.

摘要翻译： 本发明提供一种能够通过高精度地确定喉部高度来确保记录特性的薄膜磁头的制造方法。 TH指定层形成为在与间隙层相邻的同时延伸到位置P1，并且辅助绝缘层类似地形成为从位置P 1延伸而邻近间隙层并指定喉部 基于位置P 1的高度。之后，形成主绝缘层以覆盖辅助绝缘层上的薄膜线圈，并且形成磁轭层，以便部分地延伸到TH指定 层。 基于位置P 1由辅助绝缘层精确稳定地确定喉部高度。

公开(公告)号：US07433152B2

公开(公告)日：2008-10-07

申请号：US11393848

申请日：2006-03-31

申请人： Yuichi Watabe ,  Susumu Aoki ,  Reiichi Kurumisawa ,  Yasuyuki Notsuke ,  Norikazu Ota

发明人： Yuichi Watabe ,  Susumu Aoki ,  Reiichi Kurumisawa ,  Yasuyuki Notsuke ,  Norikazu Ota

IPC分类号： G11B5/147

CPC分类号： G11B5/3967 ,  G11B5/1278 ,  G11B5/3116 ,  G11B5/3143

摘要： A perpendicular magnetic recording head capable of minimizing the possibility of erasing recorded information without intention at the time of recording information is provided. A pole layer has a structure in which a main pole layer disposed on a leading side and an auxiliary pole layer disposed on a trailing side are laminated. Even if a part of a magnetic flux contained in the auxiliary pole layer is directly emitted from an air bearing surface to outside not via the main pole layer, as the magnetic flux is contained in the magnetic layer, the magnetic flux is not easily emitted from the air bearing surface to the outside directly. Therefore, an unnecessary perpendicular magnetic field is not easily generated by the magnetic flux. Thereby, a recording medium is not easily magnetized again by the unnecessary magnetic field, so information recorded on the recording medium is not easily erased without intention.

公开(公告)号：US20060098338A1

公开(公告)日：2006-05-11

申请号：US11264171

申请日：2005-11-02

申请人： Yuichi Watabe ,  Susumu Aoki ,  Reiichi Kurumisawa ,  Yasuyuki Notsuke ,  Norikazu Ota

发明人： Yuichi Watabe ,  Susumu Aoki ,  Reiichi Kurumisawa ,  Yasuyuki Notsuke ,  Norikazu Ota

IPC分类号： G11B5/147

CPC分类号： G11B5/3967 ,  G11B5/1278 ,  G11B5/3116 ,  G11B5/3143

摘要： A perpendicular magnetic recording head capable of minimizing the possibility of erasing recorded information without intention at the time of recording information is provided. A pole layer has a structure in which a main pole layer disposed on a leading side and an auxiliary pole layer disposed on a trailing side are laminated. Even if a part of a magnetic flux contained in the auxiliary pole layer is directly emitted from an air bearing surface to outside not via the main pole layer, as the magnetic flux is contained in the magnetic layer, the magnetic flux is not easily emitted from the air bearing surface to the outside directly. Therefore, an unnecessary perpendicular magnetic field is not easily generated by the magnetic flux. Thereby, a recording medium is not easily magnetized again by the unnecessary magnetic field, so information recorded on the recording medium is not easily erased without intention.

公开(公告)号：US20060171072A1

公开(公告)日：2006-08-03

申请号：US11393848

申请日：2006-03-31

申请人： Yuichi Watabe ,  Susumu Aoki ,  Reiichi Kurumisawa ,  Yasuyuki Notsuke ,  Norikazu Ota

发明人： Yuichi Watabe ,  Susumu Aoki ,  Reiichi Kurumisawa ,  Yasuyuki Notsuke ,  Norikazu Ota

IPC分类号： G11B5/147

CPC分类号： G11B5/3967 ,  G11B5/1278 ,  G11B5/3116 ,  G11B5/3143

摘要： A perpendicular magnetic recording head capable of minimizing the possibility of erasing recorded information without intention at the time of recording information is provided. A pole layer has a structure in which a main pole layer disposed on a leading side and an auxiliary pole layer disposed on a trailing side are laminated. Even if a part of a magnetic flux contained in the auxiliary pole layer is directly emitted from an air bearing surface to outside not via the main pole layer, as the magnetic flux is contained in the magnetic layer, the magnetic flux is not easily emitted from the air bearing surface to the outside directly. Therefore, an unnecessary perpendicular magnetic field is not easily generated by the magnetic flux. Thereby, a recording medium is not easily magnetized again by the unnecessary magnetic field, so information recorded on the recording medium is not easily erased without intention.

摘要翻译： 提供一种垂直磁记录头，其能够在记录信息时无意义地最小化擦除记录信息的可能性。 极层具有层叠设置在前侧的主极层和设置在后侧的辅助极层的结构。 即使在辅助极层中包含的磁通量的一部分从空气轴承面直接发射到外部而不是通过主极层，由于磁通量包含在磁性层中，所以磁通不容易从 空气轴承表面直接到外面。 因此，磁通不容易产生不必要的垂直磁场。 因此，记录介质不会被不必要的磁场容易地磁化，所以记录在记录介质上的信息不容易被擦除。

公开(公告)号：US20060126222A1

公开(公告)日：2006-06-15

申请号：US11252038

申请日：2005-10-18

申请人： Susumu Aoki ,  Reiichi Kurumisawa ,  Norikazu Ota ,  Yasuyuki Notsuke ,  Yuichi Watabe

发明人： Susumu Aoki ,  Reiichi Kurumisawa ,  Norikazu Ota ,  Yasuyuki Notsuke ,  Yuichi Watabe

IPC分类号： G11B5/147

CPC分类号： G11B5/1278 ,  G11B5/3116 ,  G11B5/3163 ,  Y10T29/49046

摘要： The present invention provides a method of manufacturing a thin film magnetic head capable of assuring recording characteristics by determining throat height with high precision. A TH specifying layer is formed so as to extend to a position P1 while being adjacent to a gap layer, and an auxiliary insulating layer is similarly formed so as to extend from the position P1 while being adjacent to the gap layer and specify throat height on the basis of the position P1. After that, a main insulating layer is formed so as to cover a thin film coil on the auxiliary insulating layer, and a yoke layer is formed so as to extend while being partially on the TH specifying layer. The throat height is determined accurately and stably on the basis of the position P1 by the auxiliary insulating layer.

摘要翻译： 本发明提供一种能够通过高精度地确定喉部高度来确保记录特性的薄膜磁头的制造方法。 TH指定层形成为在与间隙层相邻的同时延伸到位置P1，并且辅助绝缘层类似地形成为从位置P 1延伸而邻近间隙层并指定喉部 基于位置P 1的高度。之后，形成主绝缘层以覆盖辅助绝缘层上的薄膜线圈，并且形成磁轭层，以便部分地延伸到TH指定 层。 基于位置P 1由辅助绝缘层精确稳定地确定喉部高度。

公开(公告)号：US07457080B2

公开(公告)日：2008-11-25

申请号：US11264171

申请日：2005-11-02

申请人： Yuichi Watabe ,  Susumu Aoki ,  Reiichi Kurumisawa ,  Yasuyuki Notsuke ,  Norikazu Ota

发明人： Yuichi Watabe ,  Susumu Aoki ,  Reiichi Kurumisawa ,  Yasuyuki Notsuke ,  Norikazu Ota

IPC分类号： G11B5/147

CPC分类号： G11B5/3967 ,  G11B5/1278 ,  G11B5/3116 ,  G11B5/3143

摘要： A perpendicular magnetic recording head capable of minimizing the possibility of erasing recorded information without intention at the time of recording information is provided. A pole layer has a structure in which a main pole layer disposed on a leading side and an auxiliary pole layer disposed on a trailing side are laminated. Even if a part of a magnetic flux contained in the auxiliary pole layer is directly emitted from an air bearing surface to outside not via the main pole layer, as the magnetic flux is contained in the magnetic layer, the magnetic flux is not easily emitted from the air bearing surface to the outside directly. Therefore, an unnecessary perpendicular magnetic field is not easily generated by the magnetic flux. Thereby, a recording medium is not easily magnetized again by the unnecessary magnetic field, so information recorded on the recording medium is not easily erased without intention.

摘要翻译： 提供一种垂直磁记录头，其能够在记录信息时无意义地最小化擦除记录信息的可能性。 极层具有层叠设置在前侧的主极层和设置在后侧的辅助极层的结构。 即使在辅助极层中包含的磁通量的一部分从空气轴承面直接发射到外部而不是通过主极层，由于磁通量包含在磁性层中，所以磁通不容易从 空气轴承表面直接到外面。 因此，磁通不容易产生不必要的垂直磁场。 因此，记录介质不会被不必要的磁场容易地磁化，所以记录在记录介质上的信息不容易被擦除。

公开(公告)号：US07245454B2

公开(公告)日：2007-07-17

申请号：US10832274

申请日：2004-04-27

申请人： Susumu Aoki ,  Yasuyuki Notsuke ,  Yuichi Watabe ,  Norikazu Ota ,  Tetsuya Roppongi

发明人： Susumu Aoki ,  Yasuyuki Notsuke ,  Yuichi Watabe ,  Norikazu Ota ,  Tetsuya Roppongi

IPC分类号： G11B5/31 ,  G11B5/23

CPC分类号： G11B5/1278

摘要： A write head of a magnetic head for vertical magnetic recording comprises: a coil; a main pole layer that allows the magnetic flux corresponding to the magnetic field generated by the coil to pass therethrough and generates a write magnetic field; an auxiliary pole layer; a gap layer provided between the main pole layer and the auxiliary pole layer; and a yoke layer for magnetically coupling the main pole layer to the auxiliary pole layer. The main pole layer has a flat top surface. In the main pole layer the position in which the thickness starts to increase is located between the medium facing surface and the position in which the width starts to increase.

摘要翻译： 用于垂直磁记录的磁头的写头包括：线圈; 主极层，其允许对应于由线圈产生的磁场的磁通量通过，并产生写入磁场; 辅助极层; 设置在主极层和辅助极层之间的间隙层; 以及用于将主极层磁耦合到辅助极层的磁轭层。 主极层具有平坦的顶表面。 在主极层中，厚度开始增加的位置位于介质相对表面和宽度开始增加的位置之间。

公开(公告)号：US20050229387A1

公开(公告)日：2005-10-20

申请号：US11041266

申请日：2005-01-25

申请人： Yuichi Watabe ,  Susumu Aoki ,  Yasuyuki Notsuke ,  Tetsuya Roppongi

发明人： Yuichi Watabe ,  Susumu Aoki ,  Yasuyuki Notsuke ,  Tetsuya Roppongi

IPC分类号： G11B5/31 ,  G11B5/127 ,  G11B5/147

CPC分类号： G11B5/147 ,  G11B5/1278 ,  G11B5/3116 ,  G11B5/3123 ,  G11B5/3163 ,  Y10T29/49041 ,  Y10T29/49043 ,  Y10T29/49044 ,  Y10T29/49048 ,  Y10T29/4906

摘要： A main pole layer of a magnetic head includes a first portion disposed at a distance from a medium facing surface, and a second portion that is smaller in thickness than the first portion and disposed between the first portion and the medium facing surface. The step of forming the main pole layer includes the steps of forming a plating layer such that one of ends of the plating layer closer to the medium facing surface is located at a position that coincides with the position of one of ends of the first portion closer to the medium facing surface; forming a first nonmagnetic layer to cover the plating layer; polishing the first nonmagnetic layer and the plating layer; forming a space by removing the plating layer; forming a magnetic layer, which will be the main pole layer, in the space and on the top surface of the first nonmagnetic layer; forming a second nonmagnetic layer to cover the magnetic layer; and polishing the second nonmagnetic layer and the magnetic layer.

摘要翻译： 磁头的主极层包括设置在与介质相对表面一定距离处的第一部分，以及第二部分，该第二部分的厚度小于第一部分，并且设置在第一部分和介质面向表面之间。 形成主极层的步骤包括以下步骤：形成电镀层，使得电镀层的靠近介质相对表面的端部之一位于与第一部分的端部中的一个端部的位置相近的位置处 到面向中间的表面; 形成覆盖所述镀层的第一非磁性层; 抛光第一非磁性层和镀层; 通过去除镀层形成空间; 在第一非磁性层的空间和顶表面上形成作为主极层的磁性层; 形成第二非磁性层以覆盖所述磁性层; 并研磨第二非磁性层和磁性层。