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1. 发明授权

US06813824B2 Method of producing thin film magnetic head 失效
标题翻译：制造薄膜磁头的方法
公开(公告)号：US06813824B2
公开(公告)日：2004-11-09
申请号：US10328542
申请日：2002-12-23
申请人： Minoru Hasegawa , Yoshinori Ohtsuka , Yuji Uehara , Takashi Sekikawa , Hiroshi Maeda , Masahiro Kakehi , Ikuya Tagawa , Tomoko Kutsuzawa , Syuji Nishida
发明人： Minoru Hasegawa , Yoshinori Ohtsuka , Yuji Uehara , Takashi Sekikawa , Hiroshi Maeda , Masahiro Kakehi , Ikuya Tagawa , Tomoko Kutsuzawa , Syuji Nishida
IPC分类号： G11B5127
CPC分类号： G11B5/313 , G11B5/17 , G11B5/3163 , Y10T29/49034 , Y10T29/49041 , Y10T29/49046 , Y10T29/49048 , Y10T29/49052 , Y10T29/49073
摘要： A liquid resist is introduced between adjacent conductive lines of a coil pattern girdling around a magnetic core piece. When the liquid resist is cured, an insulating resin filler can be fixed between the adjacent conductive lines of the coil pattern. An insulating metallic layer is formed to extend over the insulting resin filler and the conductive lines of the coil pattern. Thereafter, the insulating metallic layer is subjected to a flattening grinding treatment until at least a part of the conductive line is exposed at a flattened surface. Of the resist, of a higher fluidity, penetrates in every hole and corner between the adjacent conductive lines, the gap defined between the adjacent conductive lines is fully filled with the insulating material. No voids remain in the gap. The conductive line of the coil can be reliably prevented from corrosion or oxidation. Moreover, a relatively brittle of fragile insulating resin filler is reliably prevented from being subjected to the flattening.

2. 发明授权

US06567239B1 Thin film magnetic head including a coil insulating resin filler and an insulating metallic layer covering at least partly the insulating resin filler on a datum plane 失效
标题翻译：薄膜磁头包括线圈绝缘树脂填料和至少部分地覆盖基准平面上的绝缘树脂填料的绝缘金属层
公开(公告)号：US06567239B1
公开(公告)日：2003-05-20
申请号：US09716345
申请日：2000-11-20
申请人： Minoru Hasegawa , Yoshinori Ohtsuka , Yuji Uehara , Takashi Sekikawa , Hiroshi Maeda , Masahiro Kakehi , Ikuya Tagawa , Tomoko Kutsuzawa , Syuji Nishida
发明人： Minoru Hasegawa , Yoshinori Ohtsuka , Yuji Uehara , Takashi Sekikawa , Hiroshi Maeda , Masahiro Kakehi , Ikuya Tagawa , Tomoko Kutsuzawa , Syuji Nishida
IPC分类号： G11B5147
CPC分类号： G11B5/313 , G11B5/17 , G11B5/3163 , Y10T29/49034 , Y10T29/49041 , Y10T29/49046 , Y10T29/49048 , Y10T29/49052 , Y10T29/49073
摘要： A liquid resist is introduced between adjacent conductive lines of a coil pattern girdling around a magnetic core piece. When the liquid resist is cured, an insulating resin filler can be fixed between the adjacent conductive lines of the coil pattern. An insulating metallic layer is formed to extend over the insulting resin filler and the conductive lines of the coil pattern. Thereafter, the insulating metallic layer is subjected to a flattening grinding treatment until at least a part of the conductive line is exposed at a flattened surface. Since the liquid of the resist, of a higher fluidity, penetrates in every hole and corner between the adjacent conductive lines, the gap defined between the adjacent conductive lines is fully filled with the insulating material. No voids remain in the gap. The conductive line of the coil can be reliably prevented from corrosion or oxidation. Moreover, a relatively brittle of fragile insulating resin filler is reliably prevented from being subjected to the flattening grinding treatment.
摘要翻译：在围绕磁芯片的线圈图案的相邻导线之间引入液体抗蚀剂。当液体抗蚀剂固化时，可以在线圈图案的相邻导电线之间固定绝缘树脂填料。绝缘金属层形成为在绝缘树脂填料和线圈图案的导线上延伸。此后，对绝缘金属层进行平坦化研磨处理，直到导电线的至少一部分在平坦表面露出。由于具有较高流动性的抗蚀剂的液体渗透在相邻导电线之间的每个孔和拐角处，所以相邻导电线之间限定的间隙被绝缘材料完全充满。间隙中没有空隙。可以可靠地防止线圈的导线腐蚀或氧化。此外，可靠地防止相对脆弱的脆性绝缘树脂填料进行平坦化研磨处理。

3. 发明授权

US06751052B1 Thin film magnetic head with short lower magnetic pole piece 失效
标题翻译：薄膜磁头，具有较低的下磁极片
公开(公告)号：US06751052B1
公开(公告)日：2004-06-15
申请号：US09611009
申请日：2000-07-06
申请人： Ikuya Tagawa , Tomoko Kutsuzawa , Syuji Nishida , Teruo Kiyomiya , Yoshinori Ohtsuka , Hiroshi Maeda , Minoru Hasegawa , Masahiro Kakehi , Takashi Sekikawa , Yukinori Ikegawa
发明人： Ikuya Tagawa , Tomoko Kutsuzawa , Syuji Nishida , Teruo Kiyomiya , Yoshinori Ohtsuka , Hiroshi Maeda , Minoru Hasegawa , Masahiro Kakehi , Takashi Sekikawa , Yukinori Ikegawa
IPC分类号： G11B5147
CPC分类号： B82Y25/00 , B82Y10/00 , G11B5/00813 , G11B5/012 , G11B5/313 , G11B5/3967 , G11B2005/3996
摘要： A thin film magnetic head includes an upper and a lower magnetic pole layer extending forward from a central magnetic core within a thin film coil. A narrow upper and lower front magnetic pole piece are connected to the front ends of the upper and lower magnetic pole layer, respectively. The upper front magnetic pole piece extends rearward from its front end exposed at a medium-opposed surface. The lower front magnetic pole piece extends in a lateral direction along the medium-opposed surface by a lateral width larger than that of the upper front magnetic pole piece. The lower front magnetic pole piece extends rearward from the medium-opposed surface by a longitudinal length smaller than that of the upper front magnetic pole piece. The lower front magnetic pole piece serves to concentrate the magnetic flux at the front ends of the upper and lower front magnetic pole pieces. Since the lower front magnetic pole piece is designed to have a larger lateral width in the lateral direction irrespective of a smaller length in the longitudinal direction, the production of the lower front magnetic pole piece can remarkably be facilitated.
摘要翻译：薄膜磁头包括从薄膜线圈内的中心磁芯向前延伸的上磁极层和下磁极层。一个窄的上，下前磁极片分别连接到上磁极层和下磁极层的前端。上前磁极片从其在中间相对表面处暴露的前端向后延伸。下部前磁极片沿着中间相对表面沿横向宽度大于上部前磁极片的横向宽度延伸。下部前磁极片从介质相对表面向后延伸的纵向长度小于上部前磁极片的纵向长度。下部前磁极片用于将磁通集中在上，前前磁极片的前端。由于下侧前磁极片被设计成在横向方向上具有较大的横向宽度，而与长度方向上的较短长度无关，因此可以显着地促进下部前磁极片的制造。

4. 发明授权

US06510024B2 Magnetic head and method of manufacturing the same 失效
标题翻译：磁头及其制造方法
公开(公告)号：US06510024B2
公开(公告)日：2003-01-21
申请号：US09906910
申请日：2001-07-17
申请人： Yoshinori Otsuka , Ikuya Tagawa , Yukinori Ikegawa , Tomoko Kutsuzawa , Yuji Uehara , Minoru Hasegawa
发明人： Yoshinori Otsuka , Ikuya Tagawa , Yukinori Ikegawa , Tomoko Kutsuzawa , Yuji Uehara , Minoru Hasegawa
IPC分类号： G11B5147
CPC分类号： G11B5/3967 , G11B5/1871 , G11B5/3116 , G11B5/3163
摘要： There is provided a magnetic head which is able to enhance the magnetic field intensity to be generated by shaping a magnetic pole, and a method of manufacturing the same. The method of manufacturing a magnetic head, comprising the steps of forming a lower recording magnetic pole and an upper recording magnetic pole, and trimming partially an elongated pole in the vicinity of a floating surface of the upper recording magnetic pole and an upper portion of the lower recording magnetic pole positioned below and around the elongated pole by an ion milling method, wherein a core width of the elongated pole can be adjusted.
摘要翻译：提供一种能够增强通过使磁极成形而产生的磁场强度的磁头及其制造方法。一种制造磁头的方法，包括以下步骤：形成下记录磁极和上记录磁极，并且在上记录磁极的浮动表面附近部分地修剪细长磁极和下部记录磁极通过离子铣削方法定位在细长杆的下方和周围，其中可以调节细长杆的芯宽度。

5. 发明授权

US06282776B1 Magnetic head and method of manufacturing the same 失效
公开(公告)号：US06282776B1
公开(公告)日：2001-09-04
申请号：US09199722
申请日：1998-11-25
申请人： Yoshinori Otsuka , Ikuya Tagawa , Yukinori Ikegawa , Tomoko Kutsuzawa , Yuji Uehara , Minoru Hasegawa
发明人： Yoshinori Otsuka , Ikuya Tagawa , Yukinori Ikegawa , Tomoko Kutsuzawa , Yuji Uehara , Minoru Hasegawa
IPC分类号： G11B5129
CPC分类号： G11B5/3967 , G11B5/1871 , G11B5/3116 , G11B5/3163 , Y10T29/49044 , Y10T29/49046
摘要： There is provided a magnetic head which is able to enhance the magnetic field intensity to be generated by shaping a magnetic pole, and a method of manufacturing the same. The method of manufacturing a magnetic head, comprising the steps of forming a lower recording magnetic pole and an upper recording magnetic pole, and trimming partially an elongated pole in the vicinity of a floating surface of the upper recording magnetic pole and an upper portion of the lower recording magnetic pole positioned below and around the elongated pole by an ion milling method, wherein a core width of the elongated pole can be adjusted.

6. 发明授权

US06404588B1 Thin film magnetic head having magnetic yoke layer connected to magnetic yoke piece of reduced width 失效
标题翻译：具有磁轭层的薄膜磁头连接到减小宽度的磁轭上
公开(公告)号：US06404588B1
公开(公告)日：2002-06-11
申请号：US09426089
申请日：1999-10-22
申请人： Minoru Hasegawa , Syuji Nishida
发明人： Minoru Hasegawa , Syuji Nishida
IPC分类号： G11B5187
CPC分类号： B82Y25/00 , B82Y10/00 , G11B5/312 , G11B5/313 , G11B5/3133 , G11B5/3143 , G11B5/3967 , G11B2005/3996
摘要： A thin film magnetic head comprises a magnetic yoke piece exposed at a medium-opposed surface adjacent a gap layer. A magnetic yoke layer is connected to the magnetic yoke piece at a position retracting from the medium-opposed surface. The tip end of the magnetic yoke layer is exposed at the medium-opposed surface. A non-magnetic layer is interposed between the tip end of the magnetic yoke layer and the magnetic yoke piece at the medium-opposed surface. The non-magnetic layer serves to space the tip end of the magnetic yoke layer away from the other magnetic yoke layer which is separated by the magnetic yoke piece and a gap layer, for example, from the magnetic yoke layer. It is possible to reduce a magnetic field directed to the other magnetic yoke layer from the edges of the magnetic yoke layer protruding in the lateral direction of a data track. Such magnetic fields from the magnetic yoke layer hardly induce magnetic reversal on a magnetic recording medium such as a magnetic recording disk or tape.
摘要翻译：薄膜磁头包括在与间隙层相邻的介质相对表面处暴露的磁轭。磁轭层在与介质相对表面缩回的位置处连接到磁轭件。磁轭层的前端在介质相对表面露出。非磁性层位于中间相对表面处的磁轭层的末端和磁轭之间。非磁性层用于将磁轭层的前端远离由磁轭片隔开的另一磁轭层和例如磁轭层的间隙层。可以从在数据轨道的横向方向上突出的磁轭层的边缘减小指向另一磁轭层的磁场。来自磁轭层的这种磁场几乎不会在诸如磁记录盘或磁带的磁记录介质上引起磁反转。

7. 发明授权

US07167341B2 Thin film magnetic head having lower auxiliary magnetic pole on lower magnetic pole layer 失效
标题翻译：薄膜磁头在下磁极层上具有较低的辅助磁极
公开(公告)号：US07167341B2
公开(公告)日：2007-01-23
申请号：US10619859
申请日：2003-07-15
申请人： Minoru Hasegawa , Yoshinori Ohtsuka
发明人： Minoru Hasegawa , Yoshinori Ohtsuka
IPC分类号： G11B5/147
CPC分类号： G11B5/3103 , G11B5/3116 , G11B5/313 , G11B5/3163
摘要： A depression is formed on the surface of a lower magnetic pole layer in a thin film magnetic head. A lower auxiliary magnetic pole is defined in the lower magnetic pole layer between the depression and a medium-opposed surface of a head slider. The depression is filled up with a non-magnetic material. When the thin film magnetic head is to be formed, no magnetic layer is formed on the lower magnetic pole layer for forming the lower auxiliary magnetic pole. A dry process such as sputtering and vapor-deposition can be employed to form the lower magnetic pole layer, so that a wider choice can be provided for the material of the lower magnetic pole layer and the lower auxiliary magnetic pole.
摘要翻译：在薄膜磁头中的下磁极层的表面上形成凹陷。在下部磁极层中限定下部辅助磁极，该下部磁极层位于凹部与磁头滑块的中等相对表面之间。凹陷填充有非磁性材料。当要形成薄膜磁头时，在用于形成下辅助磁极的下磁极层上不形成磁性层。可以采用诸如溅射和气相沉积之类的干法来形成下磁极层，从而可以为下磁极层和下辅助磁极的材料提供更宽的选择。

8. 发明申请

US20050013045A1 Thin film magnetic head having lower auxiliary magnetic pole on lower magnetic pole layer 失效
标题翻译：薄膜磁头在下磁极层上具有较低的辅助磁极
公开(公告)号：US20050013045A1
公开(公告)日：2005-01-20
申请号：US10619859
申请日：2003-07-15
申请人： Minoru Hasegawa , Yoshinori Ohtsuka
发明人： Minoru Hasegawa , Yoshinori Ohtsuka
IPC分类号： G11B5/31 , G11B5/147
CPC分类号： G11B5/3103 , G11B5/3116 , G11B5/313 , G11B5/3163
摘要： A depression is formed on the surface of a lower magnetic pole layer in a thin film magnetic head. A lower auxiliary magnetic pole is defined in the lower magnetic pole layer between the depression and a medium-opposed surface of a head slider. The depression is filled up with a non-magnetic material. When the thin film magnetic head is to be formed, no magnetic layer is formed on the lower magnetic pole layer for forming the lower auxiliary magnetic pole. A dry process such as sputtering and vapor-deposition can be employed to form the lower magnetic pole layer, so that a wider choice can be provided for the material of the lower magnetic pole layer and the lower auxiliary magnetic pole.
摘要翻译：在薄膜磁头中的下磁极层的表面上形成凹陷。在下部磁极层中限定下部辅助磁极，该下部磁极层位于凹部与磁头滑块的中等相对表面之间。凹陷填充有非磁性材料。当要形成薄膜磁头时，在用于形成下辅助磁极的下磁极层上不形成磁性层。可以采用诸如溅射和气相沉积之类的干法来形成下磁极层，从而可以为下磁极层和下辅助磁极的材料提供更宽的选择。

9. 发明授权

US06692977B2 Method for manufacturing magnetic head 失效
标题翻译：磁头制造方法
公开(公告)号：US06692977B2
公开(公告)日：2004-02-17
申请号：US10341016
申请日：2003-01-13
申请人： Minoru Hasegawa , Yoshinori Ohtsuka
发明人： Minoru Hasegawa , Yoshinori Ohtsuka
IPC分类号： H01L2100
CPC分类号： G11B5/3967 , G11B5/313 , G11B5/3163 , Y10S438/95
摘要： A method is provided for manufacturing a magnetic head for recording information on a magnetic recording medium in the form of a direction of magnetization, which enables manufacture of a magnetic head with gaps between turns of a conductive material constituting a coil being filled with an insulating material without any void and heat generation in the coil being suppressed. A photoresist with a higher flowability than an insulating material containing a metal element is applied to the coil. A part of the photoresist applied to the coil which covers the conductive material constituting the coil is removed by exposure and development, and on the conductive material, an insulating metal compound layer made of an insulating material containing a metal element and having a higher thermal conductivity than the photoresist is formed and polished for flattening.
摘要翻译：提供了一种制造用于以磁化方向的方式在磁记录介质上记录信息的磁头的方法，其能够制造具有填充有绝缘材料的构成线圈的导电材料的匝之间的间隙的磁头在线圈中没有任何空隙和发热被抑制。具有比含有金属元素的绝缘材料更高的流动性的光致抗蚀剂被施加到线圈。通过曝光和显影去除涂覆在覆盖构成线圈的导电材料的线圈上的光致抗蚀剂的一部分，并且在导电材料上，由含有金属元素并具有较高导热性的绝缘材料制成的绝缘金属化合物层比形成光致抗蚀剂并进行平坦化抛光。

10. 发明授权

US07750783B2 Electronic instrument including a coil unit 有权
标题翻译：电子仪器包括线圈单元
公开(公告)号：US07750783B2
公开(公告)日：2010-07-06
申请号：US12071214
申请日：2008-02-19
申请人： Minoru Hasegawa , Masao Kuroda
发明人： Minoru Hasegawa , Masao Kuroda
IPC分类号： H01F27/08 , H01F27/06 , H01F27/02 , H01F27/30 , H01F5/00 , H01F27/28 , H01F7/06
CPC分类号： H01F38/14 , H01F27/22 , H01F27/2804 , H01F27/365 , Y10T29/4902
摘要： A coil unit includes a planar coil, a magnetic member that is provided under the planar coil, a magnetic flux leakage prevention member that is provided under the magnetic member, and a heat sink that is provided under the magnetic flux leakage prevention member. The magnetic flux leakage prevention member is electrically insulated from the heat sink. The magnetic flux leakage prevention member is insulated from the heat sink using a double-sided adhesive tape, for example. Since the heat sink dissipates heat generated from the planar coil and is electrically insulated from the magnetic flux leakage prevention member, the heat sink does not function as a member which receives a magnetic flux.
摘要翻译：线圈单元包括平面线圈，设置在平面线圈下方的磁性构件，设置在磁性构件下方的磁通泄漏防止构件，以及设置在磁漏泄漏构件下方的散热器。防漏磁部件与散热器电绝缘。例如，使用双面胶带将防漏磁部件与散热器绝缘。由于散热器散发由平面线圈产生的热量，并且与防漏磁部件电绝缘，散热器不起到接收磁通的部件的作用。

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