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1. 发明授权

US06198597B1 Thin-film magnetic head having improved magnetic pole structure 有权
标题翻译：具有改善的磁极结构的薄膜磁头
公开(公告)号：US06198597B1
公开(公告)日：2001-03-06
申请号：US09153858
申请日：1998-09-16
申请人： Kohichi Tateyama , Hiroaki Yoda , Atsuhito Sawabe , Naoyuki Inoue , Akio Hori , Tadahiko Kobayashi , Hiromi Sakata , Michiko Hara , Takasi Koizumi , Tomohiko Nagata , Takeo Sakakubo , Kei Sakoda
发明人： Kohichi Tateyama , Hiroaki Yoda , Atsuhito Sawabe , Naoyuki Inoue , Akio Hori , Tadahiko Kobayashi , Hiromi Sakata , Michiko Hara , Takasi Koizumi , Tomohiko Nagata , Takeo Sakakubo , Kei Sakoda
IPC分类号： G11B531
CPC分类号： G11B5/3113 , G11B5/3116 , G11B5/3163
摘要： A thin-film magnetic head comprises a magnetic gap disposed to be positioned on an air bearing surface of the magnetic head, a pair of magnetic poles disposed to hold the magnetic gap therebetween, and a coil positioned between the pair of the magnetic poles to intersect the magnetic poles, wherein at least one of the magnetic poles being composed of a T-shaped magnetic pole, the T-shaped magnetic pole comprising a front part of a magnetic pole contacting with the magnetic gap, an intermediate part of a magnetic pole lying on the front part, and a rear part of a magnetic pole lying on the intermediate part, wherein a width of the front part roughly defines a track width, the rear part has a wider width in a direction of track width than a width of the front part, and the intermediate part contacts with the rear part at an entire width of the rear part at the air bearing surface and has a narrower width at a contacting face with the front part than the width of the rear part.
摘要翻译：薄膜磁头包括设置在磁头的空气轴承表面上的磁隙，设置成保持磁隙的一对磁极和位于一对磁极之间的线圈，以相交磁极，其中至少一个磁极由T形磁极组成，T形磁极包括与磁隙接触的磁极的前部，位于磁极的中间部分在前部的前部和位于中间部的磁极的后部，前部的宽度大致限定轨道宽度，后部在轨道宽度方向上的宽度比宽度宽前部，并且中间部分在后部的空气轴承表面的整个宽度处与后部接触，并且在与前部的接触面处具有比后部的宽度更窄的宽度。

2. 发明授权

US6108167A Magnetic head 有权
标题翻译：磁头
公开(公告)号：US6108167A
公开(公告)日：2000-08-22
申请号：US150926
申请日：1998-09-10
申请人： Kohichi Tateyama , Hiroaki Yoda , Tadahiko Kobayashi , Hiromi Sakata , Michiko Hara , Akio Hori , Takashi Koizumi , Tomohiko Nagata
发明人： Kohichi Tateyama , Hiroaki Yoda , Tadahiko Kobayashi , Hiromi Sakata , Michiko Hara , Akio Hori , Takashi Koizumi , Tomohiko Nagata
IPC分类号： G11B5/31 , G11B5/39 , G11B5/187
CPC分类号： G11B5/3109 , G11B5/3146 , G11B5/3153 , G11B5/3116 , G11B5/3163 , G11B5/3967
摘要： At least one magnetic pole out of a pair of magnetic poles is provided with a T-shaped magnetic pole having a magnetic pole chip at the position contacting with a magnetic gap and an auxiliary magnetic pole which is wider than thereof. The proximity of an air bearing surface of the T-shaped magnetic pole is composed of a laminated film containing a magnetic material layer with a high saturated magnetic flux density which composes the magnetic pole chip and a portion of the auxiliary magnetic pole and a magnetic material layer with a low saturated magnetic flux density which composes the remaining portion of the auxiliary magnetic pole. When the front portion of the magnetic pole with the track width of 1.8 .mu.m or less is composed of a laminated film containing a magnetic material layer having a high saturated magnetic flux density and a magnetic material layer having a low saturated magnetic flux density, the thickness of the magnetic material layer having the high saturated magnetic flux density is 0.5 .mu.m or more. According to the above described magnetic pole, the magnetic saturation near the tip portion of the magnetic pole is controlled, so that preferable magnetic field strength and magnetic field gradient can be attained when the track width is narrowed.
摘要翻译：在一对磁极中的至少一个磁极设置有在与磁隙接触的位置处具有磁极片的T形磁极和比其宽的辅助磁极。 T形磁极的空气轴承表面的接近度由包含构成磁极片和辅助磁极的一部分的磁性材料层和具有高饱和磁通密度的磁性材料层的叠层膜构成，具有构成辅助磁极的剩余部分的低饱和磁通密度的层。当轨道宽度为1.8μm或更小的磁极的前部由包含具有高饱和磁通密度的磁性材料层和具有低饱和磁通密度的磁性材料层的层叠膜构成时，具有高饱和磁通密度的磁性材料层的厚度为0.5μm以上。根据上述磁极，控制磁极尖端部附近的磁饱和，从而当磁道宽度变窄时可以获得优选的磁场强度和磁场梯度。

3. 发明授权

US06304415B1 Magnetic head 失效
标题翻译：磁头
公开(公告)号：US06304415B1
公开(公告)日：2001-10-16
申请号：US09615783
申请日：2000-07-13
申请人： Kohichi Tateyama , Hiroaki Yoda , Tadahiko Kobayashi , Hiromi Sakata , Michiko Hara , Akio Hori , Takashi Koizumi , Tomohiko Nagata
发明人： Kohichi Tateyama , Hiroaki Yoda , Tadahiko Kobayashi , Hiromi Sakata , Michiko Hara , Akio Hori , Takashi Koizumi , Tomohiko Nagata
IPC分类号： G11B531
CPC分类号： G11B5/3109 , G11B5/3116 , G11B5/3146 , G11B5/3153 , G11B5/3163 , G11B5/3967
摘要： At least one magnetic pole out of a pair of magnetic poles is provided with a T-shaped magnetic pole having a magnetic pole chip at the position contacting with a magnetic gap and an auxiliary magnetic pole which is wider than thereof. The proximity of an air bearing surface of the T-shaped magnetic pole is composed of a laminated film containing a magnetic material layer with a high saturated magnetic flux density which composes the magnetic pole chip and a portion of the auxiliary magnetic pole and a magnetic material layer with a low saturated magnetic flux density which composes the remaining portion of the auxiliary magnetic pole. When the front portion of the magnetic pole with the track width of 1.8 &mgr;m or less is composed of a laminated film containing a magnetic material layer having a high saturated magnetic flux density and a magnetic material layer having a low saturated magnetic flux density, the thickness of the magnetic material layer having the high saturated magnetic flux density is 0.5 &mgr;m or more. According to the above described magnetic pole, the magnetic saturation near the tip portion of the magnetic pole is controlled, so that preferable magnetic field strength and magnetic field gradient can be attained when the track width is narrowed.
摘要翻译：在一对磁极中的至少一个磁极设置有在与磁隙接触的位置处具有磁极片的T形磁极和比其宽的辅助磁极。 T形磁极的空气轴承表面的接近度由包含构成磁极片和辅助磁极的一部分的磁性材料层和具有高饱和磁通密度的磁性材料层的叠层膜构成，具有构成辅助磁极的剩余部分的低饱和磁通密度的层。当磁道宽度为1.8μm或更小的磁极的前部由包含具有高饱和磁通密度的磁性材料层和具有低饱和磁通密度的磁性材料层的层叠膜构成时，厚度具有高饱和磁通密度的磁性材料层的厚度为0.5μm以上。根据上述磁极，控制磁极尖端部附近的磁饱和，从而当磁道宽度变窄时可以获得优选的磁场强度和磁场梯度。

4. 发明授权

US06751846B2 Magnetic head manufacturing method 失效
标题翻译：磁头制造方法
公开(公告)号：US06751846B2
公开(公告)日：2004-06-22
申请号：US10401869
申请日：2003-03-31
申请人： Susumu Hashimoto , Michiko Hara , Tomohiko Nagata , Kohichi Tateyama , Masatoshi Yoshikawa , Takeo Sakakubo , Hiroaki Yoda , Akio Hori , Takashi Koizumi
发明人： Susumu Hashimoto , Michiko Hara , Tomohiko Nagata , Kohichi Tateyama , Masatoshi Yoshikawa , Takeo Sakakubo , Hiroaki Yoda , Akio Hori , Takashi Koizumi
IPC分类号： G11B5127
CPC分类号： G11B5/313 , G11B5/3116 , G11B5/3163 , G11B5/3967 , Y10T29/49044
摘要： A method for manufacturing a magnetic head which includes a lower write pole having a projection, an upper write pole having a projection opposed to the projection of the lower write pole, and a magnetic gap interposed between the projection of the upper write pole and the projection of the lower write pole, comprising: a first step of making the magnetic gap on the projection of the lower write pole; a second step of making a non-magnetic material layer on the lower write pole, the non-magnetic material layer having a projection on its top surface in positional alignment with the projection of the lower write pole; a third step of making a mask layer on the non-magnetic material layer, the mask layer having an opening in which the top surface of the projection of the non-magnetic material layer is exposed; a fourth step of making a curved recess in the non-magnetic material layer by isotropically etching the non-magnetic material layer through the opening of the mask layer; a fifth step of making an approximately tapered recess down from the bottom of the curved recess by anisotropically etching the non-magnetic material layer through the opening of the mask layer; and a sixth step of making the upper write pole by burying a magnetic material in the tapered recess and the curved recess is provided.
摘要翻译：一种用于制造磁头的方法，该磁头包括具有突出部的下部写入极，具有与下部写入磁极的突起相对的突出部的上部写入磁极，以及插入在上部写入磁极和突起之间的磁隙包括：使下部写入极的投影上的磁隙形成的第一步骤; 在下写入磁极上制作非磁性材料层的第二步骤，非磁性材料层在其顶表面上具有与下写入磁极的突起位置对准的突起; 在非磁性材料层上形成掩模层的第三步骤，所述掩模层具有露出所述非磁性材料层的突起的顶表面的开口; 通过所述掩模层的开口对所述非磁性材料层进行各向同性蚀刻来制造所述非磁性材料层中的弯曲凹部的第四工序; 第五步骤，通过通过掩模层的开口各向异性蚀刻非磁性材料层，从弯曲凹槽的底部向下形成大致锥形的凹陷; 并且提供通过将磁性材料埋入锥形凹部和弯曲凹部中来制造上部写入极的第六步骤。

5. 发明授权

US06564445B1 Magnetic head manufacturing method 有权
公开(公告)号：US06564445B1
公开(公告)日：2003-05-20
申请号：US09536743
申请日：2000-03-28
申请人： Susumu Hashimoto , Michiko Hara , Tomohiko Nagata , Kohichi Tateyama , Masatoshi Yoshikawa , Takeo Sakakubo , Hiroaki Yoda , Akio Hori , Takashi Koizumi
发明人： Susumu Hashimoto , Michiko Hara , Tomohiko Nagata , Kohichi Tateyama , Masatoshi Yoshikawa , Takeo Sakakubo , Hiroaki Yoda , Akio Hori , Takashi Koizumi
IPC分类号： G11B5127
CPC分类号： G11B5/313 , G11B5/3116 , G11B5/3163 , G11B5/3967 , Y10T29/49044
摘要： A method for manufacturing a magnetic head which includes a lower write pole having a projection, an upper write pole having a projection opposed to the projection of the lower write pole, and a magnetic gap interposed between the projection of the upper write pole and the projection of the upper write pole, comprising: a first step of making the magnetic gap on the projection of the lower write pole; a second step of making a non-magnetic material layer on the lower write pole, the non-magnetic material layer having a projection on its top surface in positional alignment with the projection of the lower write pole; a third step of making a mask layer on the non-magnetic material layer, the mask layer having an opening in which the top surface of the projection of the non-magnetic material layer is exposed; a fourth step of making a curved recess in the non-magnetic material layer by isotropically etching the non-magnetic material layer through the opening of the mask layer; a fifth step of making an approximately tapered recess down from the bottom of the curved recess by anisotropically etching the non-magnetic material layer through the opening of the mask layer; and a sixth step of making the upper write pole by burying a magnetic material in the tapered recess and the curved recess is provided.

6. 发明授权

US5912790A Thin film magnetic recording-reproducing head having a high recording density and high fidelity 失效
标题翻译：具有高记录密度和高保真度的薄膜磁记录再现头
公开(公告)号：US5912790A
公开(公告)日：1999-06-15
申请号：US818110
申请日：1997-03-13
申请人： Hiroaki Yoda , Akio Hori , Michiko Hara , Naoyuki Inoue , Yuichi Ohsawa , Susumu Hashimoto , Takeo Sakakubo , Norio Ozawa , Teruo Sasho
发明人： Hiroaki Yoda , Akio Hori , Michiko Hara , Naoyuki Inoue , Yuichi Ohsawa , Susumu Hashimoto , Takeo Sakakubo , Norio Ozawa , Teruo Sasho
IPC分类号： G11B5/31 , G11B5/39 , G11B5/127 , G11B5/187
CPC分类号： B82Y25/00 , B82Y10/00 , G11B5/3103 , G11B5/3116 , G11B5/313 , G11B5/3163 , G11B5/3967 , G11B2005/3996
摘要： A composite magnetic head includes a recording head and a reproducing head. The recording head may be formed below or above the reproducing head. The lower of the recording and reproducing heads includes a first electrode. In addition, a conductive layer acting as a pole structure for the recording head includes a portion defining a hole through which a second electrode is made to contact the first electrode.
摘要翻译：复合磁头包括记录头和再现头。记录头可以形成在再现头的下方或上方。记录和再现头的下部包括第一电极。此外，作为记录头的极结构的导电层包括限定使第二电极与第一电极接触的孔的部分。

7. 发明授权

US5872693A Thin-film magnetic head having a portion of the upper magnetic core coplanar with a portion of the lower magnetic core 失效
标题翻译：薄膜磁头具有与下部磁芯的一部分共面的上部磁芯的一部分
公开(公告)号：US5872693A
公开(公告)日：1999-02-16
申请号：US826749
申请日：1997-03-24
申请人： Hiroaki Yoda , Atsuhito Sawabe , Naoyuki Inoue , Akio Hori
发明人： Hiroaki Yoda , Atsuhito Sawabe , Naoyuki Inoue , Akio Hori
IPC分类号： G11B5/31
CPC分类号： G11B5/3113 , G11B5/3116 , G11B5/313 , G11B5/3146 , G11B5/3153 , G11B5/3163
摘要： A thin-film magnetic head comprising a lower magnetic core formed on a substrate, an upper magnetic core formed on the lower magnetic core with a magnetic gap therebetween, and a coil interposed between the lower magnetic core and the upper magnetic core as insulated from the lower magnetic core and the upper magnetic core, characterized in that at least either of the lower magnetic core and the upper magnetic core comprises a front body of a magnetic pole facing a magnetic recording medium and a rear body of a magnetic pole having part thereof superposed on the front body of the magnetic pole, the rear body of the magnetic pole is disposed as recessed from the head surface facing the medium and held in contact with the front body of the magnetic pole in a plane, the plane is terminated at a rear of the end of the front body of the magnetic pole, and the rear body of the magnetic pole has a shape curved or bent in the direction opposite to the magnetic gap, and further the front body of the magnetic pole is composed of a magnetic member embedded in a trench formed in advance in an insulating layer.
摘要翻译：一种薄膜磁头，包括形成在基板上的下磁芯，形成在下磁芯上的上磁芯，其间具有磁隙，以及插入在下磁芯和上磁心之间的线圈，下磁芯和上磁芯，其特征在于，下磁芯和上磁芯中的至少一个包括面向磁记录介质的磁极的前体和磁极的后体，其部分叠加在磁极的前体上，磁极的后体被设置为从面向介质的头表面凹陷并且在平面中与磁极的前体保持接触，平面终止在后面的磁极的前体的端部，并且磁极的后体具有与磁隙相反的方向弯曲或弯曲的形状，并且还具有前体o f磁极由嵌入在预先形成在绝缘层中的沟槽中的磁性构件组成。

8. 发明授权

US6115216A Magnetoresistance effect type head and separate recording-reproducing type magnetic head 失效
标题翻译：磁阻效应型磁头和分离式记录再现型磁头
公开(公告)号：US6115216A
公开(公告)日：2000-09-05
申请号：US780328
申请日：1997-01-08
申请人： Hiroaki Yoda , Atsuhito Sawabe , Hitoshi Iwasaki , Naoyuki Inoue , Akio Hori
发明人： Hiroaki Yoda , Atsuhito Sawabe , Hitoshi Iwasaki , Naoyuki Inoue , Akio Hori
IPC分类号： G11B5/31 , G11B5/39 , G11B5/33 , G11B5/265
CPC分类号： B82Y25/00 , B82Y10/00 , G11B5/3929 , G11B5/3967 , G11B2005/3996 , G11B5/3116 , G11B5/3163
摘要： A magnetoresistance effect type head comprises a magnetoresistance effect film having a pair of leads connected thereto and possessing a magnetic field responding part and a pair of upper and lower shield layers having a magnetoresistance effect film nipped therebetween through the medium of a magnetic gap-forming insulating film. This magnetoresistance effect type head satisfies the relations, W.sub.s
摘要翻译：磁阻效应型头包括具有连接到其上的一对引线并具有磁场响应部分的磁阻效应膜，以及一对具有磁阻效应膜的上下屏蔽层，其间通过磁隙形成绝缘体电影。该磁阻效应型磁头满足Ws

9. 发明授权

US5633771A Magnetoresistance effect type head and separate recording-reproducing type magnetic head 失效
标题翻译：磁阻效应型磁头和分离式记录再现型磁头
公开(公告)号：US5633771A
公开(公告)日：1997-05-27
申请号：US314508
申请日：1994-09-28
申请人： Hiroaki Yoda , Atsuhito Sawabe , Hitoshi Iwasaki , Naoyuki Inoue , Akio Hori
发明人： Hiroaki Yoda , Atsuhito Sawabe , Hitoshi Iwasaki , Naoyuki Inoue , Akio Hori
IPC分类号： G11B5/31 , G11B5/39 , G11B5/265 , G11B5/127 , G11B5/29 , G11B5/33
CPC分类号： B82Y25/00 , B82Y10/00 , G11B5/3929 , G11B5/3967 , G11B2005/3996 , G11B5/3116 , G11B5/3163
摘要： A magnetoresistance effect type head comprises a magnetoresistance effect film having a pair of leads connected thereto and possessing a magnetic field responding part and a pair of upper and lower shield layers having a magnetoresistance effect type head satisfies the relations, W.sub.s
摘要翻译：磁阻效应型头包括具有连接到其上并具有磁场响应部分的一对引线的磁阻效应膜和具有磁阻效应型头的一对上下屏蔽层满足关系Ws

10. 发明授权

US06362940B1 Recording-reproducing magnetic head 失效
标题翻译：记录再现磁头
公开(公告)号：US06362940B1
公开(公告)日：2002-03-26
申请号：US09520633
申请日：2000-03-07
申请人： Hiroaki Yoda , Atsuhito Sawabe , Hitoshi Iwasaki , Naoyuki Inoue , Akio Hori
发明人： Hiroaki Yoda , Atsuhito Sawabe , Hitoshi Iwasaki , Naoyuki Inoue , Akio Hori
IPC分类号： G11B539
CPC分类号： B82Y25/00 , B82Y10/00 , G11B5/3116 , G11B5/3163 , G11B5/3929 , G11B5/3967 , G11B2005/3996
摘要： A recording-reproducing magnetic head comprising a magnetoresistance effect reproducing head and an inductive recording head. The magnetoresistance effect reproducing head having a magnetoresistance effect element and the inductive recording head having a lower magnetic core, an upper magnetic core, coils sandwiched between the lower and upper magnetic cores at their mid-parts, and a recording magnetic cores at leading end parts. The leading end parts of the lower and upper magnetic cores having a protruding part protruding to the recording magnetic gap layer and the upper magnetic core having a continuous magnetic body which extends from the protruding part to the mid-part. A center line of the protruding part of the lower magnetic core, which extends in a track length direction on a surface opposite a medium, intersecting the protruding part of the upper magnetic core.
摘要翻译：一种记录再现磁头，包括磁阻效应再现头和感应记录头。具有磁阻效应元件的磁电阻效应再现头和具有下磁芯，上磁芯，夹在下磁芯和上磁心之间的线圈的感应记录头及其前端部的记录磁芯。下磁芯和上磁芯的前端部具有突出部分，突出部分到记录磁隙层，上磁芯具有从突出部分延伸到中间部分的连续磁体。下磁芯的突出部分的中心线，其在与介质相对的表面上的轨道长度方向上延伸，与上磁芯的突出部分相交。

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