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    • 4. 发明授权
    • Magnetic head having a recessed portion corresponding to a magnetic path
and method of manufacturing the same
    • 具有对应于磁路的凹部的磁头及其制造方法
    • US5796564A
    • 1998-08-18
    • US578630
    • 1996-01-05
    • Mitsuharu ShoujiHiroyuki OhmoriYasunari SugiyamaTetsuya Yamamoto
    • Mitsuharu ShoujiHiroyuki OhmoriYasunari SugiyamaTetsuya Yamamoto
    • G11B5/10G11B5/147G11B5/17G11B5/31
    • G11B5/3106G11B5/10G11B5/1475G11B5/17G11B5/3113
    • This invention has a principal object to eliminate, in a magnetic head and a method of manufacturing the same, the necessity of filling glass, etc. onto a magnetic film to thereby improve reliability of the magnetic head. This invention resides in a method of manufacturing a magnetic head including a pair of magnetic core half bodies opposite to each other, each of the magnetic core half bodies being such that a magnetic film is formed on a base, in which a thin film coil is formed at least at one surface of butting plane surfaces between these magnetic core half bodies, characterized in that, in forming the magnetic film on the base, recessed portions are formed in advance by ion milling, etc. at the base to form the magnetic film at the recessed portions. In this case, it is desirable that the magnetic film consists of a magnetic film having axis of easy magnetization in the depth direction of the magnetic gap and a magnetic film having axis of easy magnetization perpendicular to the axis of easy magnetization.
    • PCT No.PCT / JP95 / 00884 Sec。 371日期1996年1月5日 102(e)日期1996年1月5日PCT提交1995年5月9日PCT公布。 公开号WO95 / 30984 日期:1995年11月16日本发明的主要目的是在磁头及其制造方法中消除将玻璃等填充到磁性膜上的必要性,从而提高磁头的可靠性。 本发明在于一种制造磁头的方法,所述磁头包括一对彼此相对的磁芯半体,每个磁芯半体使得在基底上形成磁性膜,其中薄膜线圈是 至少在这些磁芯半体之间的对接平面的一个表面上形成,其特征在于,在基底上形成磁性膜时,通过在基底处的离子铣削等预先形成凹部以形成磁性膜 在凹部处。 在这种情况下,理想的是,磁性膜由在磁隙的深度方向上容易磁化的轴的磁性膜和容易磁化的轴与容易磁化的轴垂直的磁性膜构成。
    • 5. 发明授权
    • Magnetic head
    • 磁头
    • US5734534A
    • 1998-03-31
    • US762721
    • 1996-12-10
    • Tetsuya YamamotoHiroyuki OhmoriYasunari SugiyamaMitsuharu Shouji
    • Tetsuya YamamotoHiroyuki OhmoriYasunari SugiyamaMitsuharu Shouji
    • G11B5/31G11B5/10G11B5/127G11B5/147G11B5/17
    • G11B5/10G11B5/127G11B5/1272G11B5/147G11B5/17
    • A magnetic head is made by fixing together two head halves 9 and 39. Recesses 10 and 40 are formed in glass layers 4 and 34 on the substrates 1 and 31 respectively of the head halves, and spiral coil patterns 11 and 41 are formed in the recesses. Apart from their inner end portions 11a and 41a the coil patterns are covered by insulating protective films 23 and 53. A plurality of sloping surfaces 4b, 34b are formed on the glass layers 4 and 34 at the locations of the inner end portions of the coil patterns, whereby a plurality of projections 4a, 34a are formed. The angle of slope .theta. of the sloping surfaces is above 30.degree. and below 90.degree.. The coil patterns 11 and 41 comprise copper plating layers 19 and 39; because the coil pattern inner end portions lie on the projections 4a, 34a their surfaces are high and exposed at the surfaces of the insulating protective films 23, 53, and gold films 16 and 46 are formed thereon. These gold films connect to each other and connect the coil patterns 11 and 41 to form one coil.
    • 磁头通过将两个半部分9和39固定在一起而形成。凹部10和40分别形成在前半部分的基板1和31上的玻璃层4和34中,螺旋线圈图案11和41形成在 凹槽 除了它们的内端部11a和41a之外,线圈图案被绝缘保护膜23和53覆盖。在线圈的内端部分的位置处,在玻璃层4和34上形成多个倾斜表面4b,34b 由此形成多个突起4a,34a。 倾斜面的倾角θ在30°以上,90°以下。 线圈图案11和41包括镀铜层19和39; 由于线圈图案内端部位于突出部4a,34a上,所以表面高,露出在绝缘保护膜23,53的表面,金膜16,46形成在其上。 这些金膜彼此连接并且连接线圈图案11和41以形成一个线圈。