公开(公告)号：US6010753A

公开(公告)日：2000-01-04

申请号：US238998

申请日：1998-01-28

申请人： Shigeru Shouji ,  Atsushi Toyoda

发明人： Shigeru Shouji ,  Atsushi Toyoda

IPC分类号： G11B5/02 ,  G11B5/23 ,  G11B5/31 ,  C23C14/02 ,  C23C14/00

CPC分类号： G11B5/3163 ,  G11B5/3116 ,  G11B5/313 ,  G11B5/02

摘要： The leading edge of a lower pole is constituted by a protruded central parallel portion, opposite end parallel portions, and slanted portions coupling the central parallel portion and the opposite end parallel portions. The width T.sub.wc of the central parallel portion is set to 10 to 25% of the total width T.sub.wa of the lower pole. The thickness P1' of the opposite end portion is set in the range from 1/3 or thicker to 2/3 or thinner than the thickness P19 of the central parallel portion.

摘要翻译： 下极的前缘由突出的中心平行部分，相对的端部平行部分和连接中心平行部分和相对端平行部分的倾斜部分构成。 中心平行部分的宽度Twc设定为下极总宽度Twa的10至25％。 相对端部的厚度P1'设定在+ E，fra 1/3 + EE或较厚至+ E，fra 2/3 + EE或比中央平行部分的厚度P19更薄的范围内。

公开(公告)号：US5926348A

公开(公告)日：1999-07-20

申请号：US919032

申请日：1997-08-27

申请人： Shigeru Shouji ,  Atsushi Toyoda

发明人： Shigeru Shouji ,  Atsushi Toyoda

IPC分类号： G11B5/31 ,  G11B5/39 ,  G11B5/55

CPC分类号： G11B5/3932 ,  G11B5/3903 ,  G11B5/398 ,  G11B5/3163 ,  G11B5/3967 ,  G11B5/5526

摘要： A magneto-resistance type magnetic head having: a base; a longitudinal bias portion, formed over the base and having a first upper flat surface and a first slanted portion, for generating a longitudinal bias magnetic field; a lead portion laminated directly on the longitudinal bias portion so as to cover the first upper flat portion and to expose the first slanted portion of the longitudinal bias portion, wherein the lead portion is made of non-magnetic material and has a second upper flat surface and a second slanted portion, and wherein the first and second slanted portions collectively serve as a slanted surface; and a magneto-resistance material layer formed over the longitudinal bias portion and the lead portion, wherein the magneto-resistance material layer directly contacts an upper surface of the base and magnetically couples with the exposed longitudinal bias portion through the slanted surface of the longitudinal bias portion, wherein the magneto-resistance material layer is terminated on the slanted surface.

摘要翻译： 一种磁阻型磁头，具有：基座; 纵向偏置部分，形成在基座上并具有第一上平坦表面和第一倾斜部分，用于产生纵向偏置磁场; 引导部分，其直接层压在所述纵向偏置部分上以覆盖所述第一上部平坦部分并且暴露所述纵向偏置部分的所述第一倾斜部分，其中所述引线部分由非磁性材料制成并且具有第二上部平坦表面 和第二倾斜部分，并且其中第一和第二倾斜部分共同用作倾斜表面; 以及形成在所述纵向偏置部分和所述引线部分上的磁阻材料层，其中所述磁阻材料层直接接触所述基底的上表面并且通过所述纵向偏置的倾斜表面与暴露的纵向偏置部分磁耦合 部分，其中所述磁阻材料层在所述倾斜表面上终止。

公开(公告)号：US5566075A

公开(公告)日：1996-10-15

申请号：US271473

申请日：1994-07-07

申请人： Shigeru Syouji ,  Atsushi Toyoda

发明人： Shigeru Syouji ,  Atsushi Toyoda

IPC分类号： G03F7/00 ,  G11B5/31 ,  G11B5/60 ,  G06F19/00 ,  B23K26/00

CPC分类号： G11B5/6005 ,  G03F7/00 ,  G11B5/3103 ,  G11B5/3163 ,  G11B5/3166 ,  Y10T29/49041 ,  Y10T29/49052

摘要： A method of manufacturing an air flow type thin film magnetic head includes the steps of providing a slider for a thin film magnetic head; forming a photo-sensitive layer directly on the slider: subjecting the photo-sensitive layer to a light beam having controlled loci to form a desired pattern on the photo-sensitive layer, their: loci of the light beam corresponding to configuration of rails to be formed on a surface of the slider; and forming the rails in accordance with the desired pattern. The loci of the light beam is controlled by a data processor. Various rail patterns including an asymmetrical and non-parallel rail pattern can be easily formed on a slider of a magnetic head.

摘要翻译： 制造气流型薄膜磁头的方法包括以下步骤：提供用于薄膜磁头的滑块; 在滑块上直接形成感光层：使光敏层经受控轨迹的光束在感光层上形成所需的图案，它们的光束轨迹对应于导轨的构型 形成在滑块的表面上; 并根据期望的图案形成轨道。 光束的轨迹由数据处理器控制。 可以容易地在磁头的滑块上形成包括不对称和非平行轨道图案的各种轨道图案。

公开(公告)号：US5559653A

公开(公告)日：1996-09-24

申请号：US349163

申请日：1994-12-02

申请人： Shigeru Shouji ,  Atsushi Toyoda

发明人： Shigeru Shouji ,  Atsushi Toyoda

IPC分类号： G11B5/31 ,  G11B5/147 ,  G11B5/17 ,  G11B5/187

CPC分类号： G11B5/3163 ,  G11B5/3116 ,  G11B5/3113 ,  G11B5/3153

摘要： A thin film magnetic head includes a lower core portion provided on a substrate and having a pole portion, a magnetic gap layer provided on the lower core portion, an insulating layer provided on the magnetic gap layer, conduction coils provided in the insulating layer, an upper core portion provided on the insulating layer, and an overcoat layer provided on the upper core portion. The upper core portion has a pole portion of a reduced width and a non-pole portion having a top-forming portion and an inclined section-forming portion formed on an inclined section of the insulating layer. The inclined section-forming section is made of a plurality of layers and a core angle of an uppermost layer of the plurality of layers of the non-pole portion is set at an angle which is 120 degrees or larger and is smaller than about 180 degrees and a core angle of a lower layer or layers of the plurality of layers of the non-pole portion is set at an angle which is smaller than the core angle of the uppermost layer and is larger than about 60 degrees. In one aspect of the invention, a foremost end portion of the lower layer of the inclined section-forming portion is located rearwardly of a foremost end portion of the the uppermost layer.

摘要翻译： 薄膜磁头包括设置在基板上的下芯部，具有极部，设置在下芯部上的磁隙层，设置在磁隙层上的绝缘层，设置在绝缘层中的导电线圈， 设置在绝缘层上的上芯部和设置在上芯部上的外涂层。 上芯部具有减小的宽度的极部分和具有形成在绝缘层的倾斜部分上的顶部形成部分和倾斜部分形成部分的非极部分。 倾斜部形成部由多层构成，非极部的多层的最上层的芯角设定为120度以上且小于约180度的角度 并且非极部分的多层的下层或多层的芯角设定为小于最上层的芯角度并且大于约60度的角度。 在本发明的一个方面，倾斜部分形成部分的下层的最前端部位于最上层的最前端部的后方。

公开(公告)号：US4896417A

公开(公告)日：1990-01-30

申请号：US311843

申请日：1989-02-17

申请人： Shuichi Sawada ,  Atsushi Toyoda

发明人： Shuichi Sawada ,  Atsushi Toyoda

IPC分类号： G11B5/31

CPC分类号： G11B5/3163 ,  Y10T29/49044 ,  Y10T29/49046

摘要： When writing data on a recording medium, a thin film magnetic head must concentrate its magnetic fluxes to a tip end of a pole thereof. For this reason, ineffective leakage magnetic fluxes to be outputted in the writing must be reduced as much as possible by desirably varying construction or formation of the thin film magnetic head. These magnetic fluxes are passed and converged through a lower layer core which is formed within a recess formed within a substrate of the thin film magnetic head. Through several experiments and study, it is proved that an average inclination angle at a side wall slope of the recess must be ranged from 15 degrees to 75 degrees. In order to form such recess, portions other than a portion at which the recess is to be formed on the substrate are covered by a patterned resist; the substrate is heated and the resist is partially flown so that the average inclination angle at the side edge portion of patterned resist will become equal to or smaller than 70 degrees; the recess is formed by an ion beam etching; and then remained resist is removed from the substrate. Thus, a smooth slope can be obtained at the edge of recess, by which the magnetic fluxes can be smoothly converged at the tip end of pole so that the recording can be performed with high recording density.

摘要翻译： 当在记录介质上写入数据时，薄膜磁头必须将其磁通量集中在其极点的末端。 为此，必须通过期望地改变薄膜磁头的结构或形成来尽可能地减少书写中输出的无效泄漏磁通量。 这些磁通量通过形成在形成在薄膜磁头的基板内的凹部内的下层芯体通过并会聚。 通过几个实验和研究，证明了凹槽侧壁倾斜角处的平均倾斜角必须在15度到75度之间。 为了形成这样的凹部，除了在基板上形成凹部的部分之外的部分被图案化的抗蚀剂覆盖; 基板被加热并且抗蚀剂部分地流动，使得图案化抗蚀剂的侧边缘部分处的平均倾斜角度将变为等于或小于70度; 凹陷通过离子束蚀刻形成; 然后保留抗蚀剂从基材上除去。 因此，可以在凹部的边缘处获得平滑的斜率，由此磁通量可以平滑地会聚在磁极的顶端，使得可以以高记录密度进行记录。

公开(公告)号：US4751050A

公开(公告)日：1988-06-14

申请号：US927814

申请日：1986-11-06

申请人： Atsushi Toyoda

发明人： Atsushi Toyoda

IPC分类号： G11B5/82 ,  C22C21/00 ,  C22C21/06 ,  G11B5/66 ,  G11B5/73

CPC分类号： C22C21/00 ,  C22C21/06 ,  Y10T428/12757

摘要： In composition of an Al-base substrate for magnetic recording media, additional inclusion of at least one of specified amount of Cr, Mg and Zn greatly improves recording and reproducing function of the product.

摘要翻译： 在用于磁记录介质的Al基底板的组成中，另外包含指定量的Cr，Mg和Zn中的至少一种极大地改善了产品的记录和再现功能。