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1. 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。

2. 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.

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

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.

5. 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。

6. 发明授权

US06614620B2 Thin film magnetic head 失效
公开(公告)号：US06614620B2
公开(公告)日：2003-09-02
申请号：US09778007
申请日：2001-02-06
申请人： Ikuya Tagawa , Tomoko Kutsuzawa , Hideo Niwa , Yukinori Ikegawa , Yoshinori Ohtsuka , Hiroshi Maeda , Takashi Sekikawa , Hiroki Fujimoto
发明人： Ikuya Tagawa , Tomoko Kutsuzawa , Hideo Niwa , Yukinori Ikegawa , Yoshinori Ohtsuka , Hiroshi Maeda , Takashi Sekikawa , Hiroki Fujimoto
IPC分类号： G11B5147
CPC分类号： G11B5/313 , G11B5/3116 , G11B5/3163 , Y10S977/934 , Y10S977/935
摘要： A thin film magnetic head includes an upper magnetic pole maintaining a constant thickness in a range determined by the so-called gap depth. A thinner film portion is defined in the upper magnetic pole in a range rearward of the range determined by the gap depth. The thinner film portion has a reduced thickness smaller than the constant thickness. The upper magnetic pole starts to enlarge the core width in the lateral direction at the rear end of the region determined by the so-called neck height. The neck height smaller than the gap depth serves to establish a reduction in the thickness of the upper magnetic pole after the upper magnetic pole gets larger in the lateral direction. A magnetic saturation can reliably be prevented at the thinner film portion in the upper magnetic pole. The front end of the upper magnetic pole is allowed to receive a larger quantity of a magnetic flux. It is possible to reliably enhance a magnetic field for recordation in the thin film magnetic head.

7. 发明授权

US07016149B2 Recording magnetic head and magnetic storage device using the same 失效
公开(公告)号：US07016149B2
公开(公告)日：2006-03-21
申请号：US10288952
申请日：2002-11-06
申请人： Tomoko Kutsuzawa , Ikuya Tagawa
发明人： Tomoko Kutsuzawa , Ikuya Tagawa
IPC分类号： G11B5/147
CPC分类号： G11B5/313 , G11B5/3116 , G11B5/3146
摘要： According to the present invention, a recording magnetic head suitable for increasing a surface recording density and having a large recording magnetic field and a small recording blur is provided. A lower magnetic pole layer and an upper magnetic pole layer opposing the lower magnetic pole layer are formed, and a lower sub magnetic pole composed of a plurality of magnetic layers is formed along a medium facing face on the lower magnetic pole layer. The lengths in a direction perpendicular to the medium facing face of the respective magnetic layers forming the lower sub magnetic pole are longer as the respective magnetic layers get further away from the upper magnetic pole layer.

8. 发明申请

US20050135006A1 Magnetic head 审中-公开
标题翻译：磁头
公开(公告)号：US20050135006A1
公开(公告)日：2005-06-23
申请号：US11063115
申请日：2005-02-22
申请人： Ikuya Tagawa , Hideyuki Akimoto , Tomoko Kutsuzawa , Syuji Nishida
发明人： Ikuya Tagawa , Hideyuki Akimoto , Tomoko Kutsuzawa , Syuji Nishida
IPC分类号： G11B5/127
CPC分类号： G11B5/127
摘要： A magnetic head increases the magnetic field strength just below a write gap 14 and thereby improves the recording resolution of a medium. To do so, an upper magnetic pole 10 and a lower magnetic pole 12 are disposed facing one another with the write gap 14 in between, with an end surface of the lower magnetic pole 12 being I-shaped and an end surface of the upper magnetic pole being T-shaped due to the upper magnetic pole 10 being formed of a first upper magnetic pole 10a that is disposed facing the lower magnetic pole 12 and is formed in an I shape that is shorter than the lower magnetic pole 12 and a second upper magnetic pole 10b that is joined to the first upper magnetic pole 10a and is formed wider than the first upper magnetic pole 10a.
摘要翻译：磁头使写入间隙14正下方的磁场强度增加，从而提高介质的记录分辨率。为此，上磁极10和下磁极12彼此面对地设置有写间隙14，其中下磁极12的端面为I形，上磁极的端面由于上磁极10由与第一上磁极10a形成的T形形成为T形，所述第一上磁极10a设置成面对下磁极12并形成为比下磁极12短的I形，上磁极10b，其连接到第一上磁极10a并形成为比第一上磁极10a更宽。

9. 发明授权

US06822831B2 Magnetic thin film, magnetic thin film forming method, and recording head 失效
标题翻译：磁性薄膜，磁性薄膜形成方法和记录头
公开(公告)号：US06822831B2
公开(公告)日：2004-11-23
申请号：US10074185
申请日：2002-02-12
申请人： Shoji Ikeda , Yuji Uehara , Ikuya Tagawa , Naoki Takeguchi , Masahiro Kakehi
发明人： Shoji Ikeda , Yuji Uehara , Ikuya Tagawa , Naoki Takeguchi , Masahiro Kakehi
IPC分类号： G11B5147
CPC分类号： H01F10/147 , G11B5/3109 , H01F10/131 , H01F10/138 , H01F10/265 , Y10S428/90
摘要： An object of the present invention is to provide a recording head having a magnetic pole simultaneously possessing a high saturation magnetic flux density, a high permeability and a high electric resistivity, and the magnetic pole of the recording head is a polycrystalline film comprising Fe whose content is not less than 57.5 atomic % and not more than 94.5 atomic %; one or more kinds of elements selected from the element group of Al, B, Ga, Si, Ge, Y, Ti, Zr, Hf, V, Nb, Ta, Cr, Mo, W and Rh, whose whole content is not less than 1 atomic % and not more than 15 atomic %; N whose content is not less than 0.5 atomic % and not more than 10 atomic %; and O whose content is not less than 1.5 atomic % and not more than 22.5 atomic %.
摘要翻译：本发明的目的是提供一种具有同时具有高饱和磁通密度，高磁导率和高电阻率的磁极的记录头，记录头的磁极是包含Fe的多晶膜，其含量不小于57.5原子％且不大于94.5原子％; 选自Al，B，Ga，Si，Ge，Y，Ti，Zr，Hf，V，Nb，Ta，Cr，Mo，W和Rh的元素组中的一种或多种元素，其全部含量不少于 1原子％以上15原子％以下。 N含量不小于0.5原子％且不大于10原子％; 其含量不小于1.5原子％且不大于22.5原子％。

10. 发明授权

US06970324B2 Thin film head with nickel-iron alloy non-magnetic substratum between non-magnetic gap layer and upper magnetic pole layer 失效
标题翻译：薄膜头与镍 - 铁合金非磁性基底之间的非磁隙层和上磁极层之间
公开(公告)号：US06970324B2
公开(公告)日：2005-11-29
申请号：US10299177
申请日：2002-11-19
申请人： Shoji Ikeda , Takayuki Kubomiya , Ikuya Tagawa , Yuji Uehara
发明人： Shoji Ikeda , Takayuki Kubomiya , Ikuya Tagawa , Yuji Uehara
IPC分类号： G11B5/31 , G11B5/39 , H01F10/16 , H01F10/26
CPC分类号： H01F10/26 , G11B5/3109 , G11B5/313 , G11B5/3967 , H01F10/16
摘要： A soft magnetic film includes a ferromagnetic layer. The ferromagnetic layer is laid over a non-magnetic substructure including ferromagnetic atoms. The uniaxial magnetic anisotropy may be established in the ferromagnetic layer. Since a magnetic property is not required in the substructure under the ferromagnetic layer, the soft magnetic film of this type may be utilized for purposes of wider variations.
摘要翻译：软磁性膜包括铁磁层。铁磁层铺设在包括铁磁原子的非磁性子结构之上。可以在铁磁层中建立单轴磁各向异性。由于在铁磁层下的亚结构中不需要磁性，所以这种类型的软磁膜可以用于较宽的变化。

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