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。

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.

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。

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.

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。

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.

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.

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。

公开(公告)号：US20080030896A1

公开(公告)日：2008-02-07

申请号：US11888475

申请日：2007-08-01

申请人： Tomoko Kutsuzawa

发明人： Tomoko Kutsuzawa

IPC分类号： G11B5/127

CPC分类号： G11B5/3133 ,  G11B5/3136 ,  G11B5/6011

摘要： A thin film magnetic head has first and second magnetic poles spaced from each other at a medium-opposed surface. A magnetic pole end layer is opposed to the second magnetic pole in a space between the first and second magnetic poles. A magnetic piece or pieces are interposed between the magnetic pole end layer and the first magnetic pole. A non-magnetic material fills a space between the magnetic pole end layer and the first magnetic pole along the medium-opposed surface. The non-magnetic material contributes to a reduction in the volume of a magnetic body between the magnetic pole end layer and the first magnetic pole. The flux path of the magnetic flux can be narrowed. The narrowed flux path contributes to a reduction in the inductance of the magnetic head. A reduced inductance enables a reliable high-frequency recordation.

摘要翻译： 薄膜磁头具有在介质相对表面处彼此间隔开的第一和第二磁极。 磁极端层在第一和第二磁极之间的空间中与第二磁极相对。 在磁极端层和第一磁极之间插入有磁片。 非磁性材料沿着介质相对表面填充磁极端层和第一磁极之间的空间。 非磁性材料有助于减小磁极端层和第一磁极之间的磁体的体积。 磁通量的通量可以变窄。 变窄的磁通路径有助于降低磁头的电感。 降低的电感使得可靠的高频记录。

公开(公告)号：US08157974B2

公开(公告)日：2012-04-17

申请号：US12392747

申请日：2009-02-25

申请人： Tomoko Kutsuzawa ,  Akihiko Fujisaki ,  Tetsuyuki Kubota ,  Atsushi Furuya ,  Nobuyoshi Yamaoka

发明人： Tomoko Kutsuzawa ,  Akihiko Fujisaki ,  Tetsuyuki Kubota ,  Atsushi Furuya ,  Nobuyoshi Yamaoka

IPC分类号： C23C14/00

CPC分类号： C23C14/35 ,  H01J37/3408 ,  Y10T29/49815

摘要： A magnet unit for a magnetron sputtering system includes a base plate and a plurality of magnet parts each including a first magnet and a first supporting member. The first supporting member supports the first magnet and fixes the first magnet to the base plate. The magnet parts confine a plasma.

摘要翻译： 用于磁控溅射系统的磁体单元包括基板和多个磁体部件，每个磁体部件包括第一磁体和第一支撑部件。 第一支撑构件支撑第一磁体并将第一磁体固定到基板。 磁体部分限制了等离子体。