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1.发明授权Method for producing a magnetic head, the magnetic head including a pair of magnetic core halves 失效用于制造磁头的方法，该磁头包括一对磁芯半部公开(公告)号：US06588092B2
公开(公告)日：2003-07-08
申请号：US10032733
申请日：2001-12-28
IPC分类号： G11B5127
CPC分类号： G11B5/1276 , G11B5/0086 , G11B5/1878 , G11B5/40 , G11B31/006 , Y10T29/49021 , Y10T29/49032 , Y10T29/49043 , Y10T29/49044 , Y10T29/49046 , Y10T29/49055
摘要： Method for producing a magnetic head of a pair of magnetic core halves combined with a nonmagnetic layer therebetween including forming a winding window in at least one of a pair of generally flat oxide magnetic plates, forming at least one underlying layer on each oxide magnetic plate, forming a metal magnetic thin film on the underlying layer containing magnetic crystalline particles having average volume Va and average surface area Sa fulfilling the relationship Sa>about 4.64 Va¾, forming a groove in a body including the oxide magnetic plate, underlying layer and metal magnetic thin film, and combining the body with another body including an oxide magnetic plate and a metal magnetic thin film with a nonmagnetic layer therebetween, where the metal magnetic thin film is formed in such a manner to prevent the oxide magnetic plates from cracking due to internal stress generated in the metal magnetic thin film.
摘要翻译： 一种用于制造与其间的非磁性层组合的一对磁芯半部的磁头的方法，包括在一对大致平坦的氧化物磁性板中的至少一个中形成绕组窗口，在每个氧化物磁性板上形成至少一个下层， 在含有平均体积Va的磁性结晶颗粒和满足Sa>约4.64VaV的平均表面积Sa的基底层上形成金属磁性薄膜，在包括氧化物磁性板，下层和金属磁性薄片的主体中形成凹槽 并且将本体与包括氧化物磁性板和在其间具有非磁性层的金属磁性薄膜的另一物体组合，其中形成金属磁性薄膜以防止氧化物磁性板由于内部应力而破裂 在金属磁性薄膜中产生。
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公开(公告)号：US06433958B1
公开(公告)日：2002-08-13
申请号：US09625687
申请日：2000-07-26
IPC分类号： G11B5235
CPC分类号： G11B5/1276 , G11B5/0086 , G11B5/1878 , G11B5/40 , G11B31/006 , Y10T29/49021 , Y10T29/49032 , Y10T29/49043 , Y10T29/49044 , Y10T29/49046 , Y10T29/49055
摘要： A magnetic head includes a pair of magnetic core halves; and a nonmagnetic layer provided between the pair of magnetic core halves for combining the pair of magnetic core halves. The pair of magnetic core halves each includes an oxide magnetic base, at least one underlying layer provided on the oxide magnetic base, and a metal magnetic thin film provided between the underlying film and the nonmagnetic layer. The metal magnetic thin film includes a magnetic film containing, as a major material, magnetic crystalline particles having an average volume Va and an average surface area Sa fulfilling the relationship of Sa>about 4.84 Va⅔. At least one of the pair of magnetic core halves has a winding window therein. The metal magnetic thin film is provided in such a manner as to prevent the oxide magnetic base from cracking due to an internal stress generated in the metal magnetic thin film.
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公开(公告)号：US4841401A
公开(公告)日：1989-06-20
申请号：US224215
申请日：1988-07-25
申请人： Mitsuo Satomi , Akio Kuroe , Eisuke Sawai , Masaru Higashionji , Hiroshi Sakakima , Kenji Kondo
发明人： Mitsuo Satomi , Akio Kuroe , Eisuke Sawai , Masaru Higashionji , Hiroshi Sakakima , Kenji Kondo
CPC分类号： G11B5/147
摘要： A magnetic head includes magnetic cores formed by sputter layers of an amorphous magnetic alloy formed on a non-magnetic substrate (1). A non-magnetic ceramic layer is provided on one amorphous magnetic alloy layer, and a non-magnetic substrate is bonded thereon by a bonding glass layer. The one amorphous magnetic alloy sputter layer is isolated from the bonding glass layer by the non-magnetic ceramic layer to prevent the quality of the bonding glass layer from deteriorating thus a stronger bonding force is maintained. The bonding of the amorphous ceramic layer with respect to the one amorphous magnetic alloy layer is strong, thus providing a magnetic head having high reliability.
摘要翻译： PCT No.PCT / JP84 / 00037 Sec。 371日期1984年10月9日第 102（e）日期1984年10月9日PCT提交1984年2月9日PCT公布。 公开号WO84 / 03167 日期1984年8月16日。磁头包括由形成在非磁性基板（1）上的非晶磁合金的溅射层形成的磁芯。 在非晶磁性合金层上设置非磁性陶瓷层，通过接合玻璃层将非磁性基板粘接在其上。 通过非磁性陶瓷层将一个非晶磁性合金溅射层与粘合玻璃层隔离，以防止接合玻璃层的质量劣化，从而保持更强的粘结力。 无定形陶瓷层相对于一个非晶磁性合金层的结合很强，从而提供了具有高可靠性的磁头。
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公开(公告)号：US4755898A
公开(公告)日：1988-07-05
申请号：US619959
申请日：1984-06-12
申请人： Masaru Higashionji , Akio Kuroe , Eisuke Sawai , Mitsuo Satomi , Hiroshi Sakakima , Kenji Kondo
发明人： Masaru Higashionji , Akio Kuroe , Eisuke Sawai , Mitsuo Satomi , Hiroshi Sakakima , Kenji Kondo
CPC分类号： G11B5/235 , G11B5/1475
摘要： A pair of half core pieces is bonded by a high lead glass bond having a low melting point, which is formed on a metal layer of small wetting angle, such as Cr, Cu, Ag, Ti, the metal layer being formed by spattering at least on a part adjacent to a plane of gap of each core piece.
摘要翻译： 一对半芯片通过具有低熔点的高铅玻璃结合，该低铅熔点形成在诸如Cr，Cu，Ag，Ti的小润湿角的金属层上，金属层通过溅射形成 至少在与每个芯片的间隙平面相邻的部分上。
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公开(公告)号：US4890379A
公开(公告)日：1990-01-02
申请号：US278172
申请日：1988-12-01
申请人： Hiroshi Yohda , Ken Takahashi , Eisuke Sawai , Syunsaku Muraoka , Keita Ihara
发明人： Hiroshi Yohda , Ken Takahashi , Eisuke Sawai , Syunsaku Muraoka , Keita Ihara
CPC分类号： G11B5/3103 , G11B5/127 , G11B5/147 , G11B5/1475 , G11B5/3163 , Y10T29/49034 , Y10T29/49057
摘要： A method of manufacturing a magnetic head includes fabricating a magnetic block having a lamination of magnetic alloy films and nonmagnetic substrates, and cutting the magnetic block into two bars to obtain magnetic core halves. A nonmagnetic film is formed on a surface of each of the core halves. The core halves are joined by adjoining the surfaces having the nonmagnetic film and then heating the thus adjoined core halves. Additionally, a magnetic field is applied rotating in a plane parallel to a plane of the magnetic alloy films. The joined core halves is then cut into a specified width, and a wire-winding window is machined therein.
摘要翻译： 一种制造磁头的方法包括制造具有磁性合金膜和非磁性基底的层压的磁性块，并将该磁性块切割成两个棒以获得磁性核半部。 在每个核心半部的表面上形成非磁性膜。 芯半部通过邻接具有非磁性膜的表面连接，然后加热这样相邻的芯半部。 另外，在与磁性合金膜的平面平行的平面内旋转施加磁场。 然后将连接的半芯片切割成指定的宽度，并在其中机加工线绕制窗口。
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公开(公告)号：US6150044A
公开(公告)日：2000-11-21
申请号：US233259
申请日：1994-04-26
CPC分类号： G11B5/1871 , G11B5/1878 , Y10S428/90 , Y10T428/1171
摘要： In a metal-in-gap magnetic head, a pair of magnetic core halves made of ferrite are arranged to oppose to each other, and metallic magnetic films are applied to each of opposing surfaces of the pair of magnetic core halves. A hard glass layer and a chromium layer are applied to a gap plane of the magnetic head as a gap layer. A gap is formed so as to abut on the chromium layers between a pair of the gap layers. The hard glass layer includes borosilicate as a main component and it has Vickers hardness of the same as that of said metallic magnetic films or less and softening temperature of 550.degree. C. or higher. Thus, a magnetic head does not generate a spacing loss when a tape slides thereon.
摘要翻译： 在金属间隙磁头中，将由铁氧体制成的一对磁芯半体彼此相对布置，并且将金属磁性膜施加到该对磁芯半体的每个相对表面上。 将硬质玻璃层和铬层作为间隙层施加到磁头的间隙平面。 形成间隙以便邻接在一对间隙层之间的铬层上。 硬质玻璃层包括硼硅酸盐作为主要成分，其维氏硬度与所述金属磁性膜的维氏硬度相同，软化温度为550℃以上。 因此，当磁带在其上滑动时，磁头不产生间隔损失。
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公开(公告)号：US5208971A
公开(公告)日：1993-05-11
申请号：US700461
申请日：1991-05-15
申请人： Shunsaku Muraoka , Eisuke Sawai , Etsuko Suzuki
发明人： Shunsaku Muraoka , Eisuke Sawai , Etsuko Suzuki
CPC分类号： G11B5/1475 , G11B5/105 , Y10T29/49057
摘要： A method of making a magnetic head wherein a metal material is sandwiched between non-magnetic substrates, including the steps of: forming a magnetic metal material at least on one side of a non-magnetic substrate; forming by sputtering a crystallization glass layer at least on one side of a compound substrate prepared by forming an anti-diffusion film on the magnetic metal material; then heat-treating in an oxygen containing atmosphere the compound substrate on which the crystallization glass has been formed; further laminating together a number of the aforesaid compound substrates under pressure and then processing (such as by cutting, grinding, and heat-treating) the laminate.
摘要翻译： 一种制造磁头的方法，其中金属材料夹在非磁性衬底之间，包括以下步骤：在非磁性衬底的至少一侧形成磁性金属材料; 通过在通过在磁性金属材料上形成抗扩散膜制备的复合基板的至少一面上溅射结晶玻璃层而形成; 然后在含氧气氛中对其上形成结晶玻璃的复合基板进行热处理; 在压力下进一步层压在一起的上述复合基板，然后对层压体进行加工（例如通过切割，研磨和热处理）。
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8.发明授权Magnetic head having core parts joined by low-melting point crystallized glass with composite gap 失效磁头具有通过具有复合间隙的低熔点结晶玻璃连接的芯部分
公开(公告)号：US5170301A
公开(公告)日：1992-12-08
申请号：US762739
申请日：1991-09-18
申请人： Syunsaku Muraoka , Etsuko Suzuki , Eisuke Sawai
发明人： Syunsaku Muraoka , Etsuko Suzuki , Eisuke Sawai
CPC分类号： G11B5/21 , G11B5/1878 , G11B5/232 , Y10T29/49039 , Y10T29/49057
摘要： A head core includes a pair of core parts made of a magnetic metallic material and bonded together by (1) a gap material which is a low-melting-point crystallized glass which serves as the bonding material and (2) non-magnetic material layers provided between the glass and the gap surfaces of the core parts. The non-magnetic material layers effectively prevent reaction between the low-melting-point crystallized glass and the metallic magnetic material of the core during the bonding heat treatment. The strength of the magnetic gap, as well as dimensional precision of the same, is enhanced as compared with the conventional arrangement of the same gap size in which bonding is accomplished by a low-melting-point non-crystallizable glass, even when the bonding is executed at the same temperature. The invention remarkably improves magnetic head production yields and reliability.
摘要翻译： 头芯包括由磁性金属材料制成的一对芯部，通过（1）作为接合材料的低熔点结晶玻璃的间隙材料和（2）非磁性材料层 设置在玻璃和芯部分的间隙表面之间。 非磁性材料层在接合热处理期间有效地防止低熔点结晶玻璃与芯的金属磁性材料之间的反应。 与通过低熔点不可结晶玻璃进行接合的相同间隙尺寸的常规布置相比，磁隙的强度以及其尺寸精度提高了，即使当接合 在相同的温度下执行。 本发明显着提高了磁头产量和可靠性。
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9.发明授权Magnetic head with a tape contacting surface having a metal filled channel therein 失效具有带接触表面的磁头，其中具有金属填充通道
公开(公告)号：US4985796A
公开(公告)日：1991-01-15
申请号：US359312
申请日：1989-05-31
申请人： Keita Ihara , Hiroshi Yohda , Eisuke Sawai , Ken Takahashi
发明人： Keita Ihara , Hiroshi Yohda , Eisuke Sawai , Ken Takahashi
CPC分类号： G11B5/127 , G11B5/1875
摘要： There is disclosed herein a magnetic head comprising a ring-like magnetic core composed of first and second magnetic core halves made of a ferrite and held in abutment against each other so as to form a magnetic gap therebetween and an elongated tape-contact surface extending across the magnetic gap. The magnetic core has in the tape-contact surface a channel formed to as to extend in the direction across the magnetic gap and the channel is filled with a magnetic metal material having a high-saturation magnetization. Preferably, the channel has a substantially V-shaped cross section. The magnetic gap exposed on the tape-contact surface is surrounded by the magnetic metal material and non-magnetic glass members provided at both ends of the magnetic gap. The non-magnetic glass members are provided so that the track width is constant from the tape-contact surface to an upper end of a winding hole of the ring-like magnetic core.
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10.发明授权Magnetic head having grooves to enhance contact with magnetic recording media and magnetic recording/reproducing apparatus 失效具有凹槽以增强与磁记录介质和磁记录/再现装置的接触的磁头公开(公告)号：US06590741B1
公开(公告)日：2003-07-08
申请号：US09593057
申请日：2000-06-13
IPC分类号： G11B5187
CPC分类号： G11B15/60 , G11B5/1871 , G11B5/255 , G11B5/53
摘要： A magnetic head for attachment to a drum includes two magnetic cores butted against each other, and a gap is formed therebetween. A glass is bonded to the upper butted portion. A winding is provided on the magnetic cores, and electromagnetic transformation is carried out. On the sliding face of the magnetic head, two grooves and are formed with the gap positioned therebetween at positions symmetrical with each other in a rotation direction of the drum to provide good contact between the magnetic head and a magnetic tape or other magnetic medium. A protective film is formed on the surface of the sliding face. The magnetic head generates a negative pressure by virtue of the grooves formed in the sliding face in the rotation direction of the drum, thereby improving contact between the magnetic head and the magnetic tape.
摘要翻译： 用于连接到鼓的磁头包括彼此对接的两个磁芯，并且在它们之间形成间隙。 玻璃结合到上对接部分。 在磁芯上设置绕组，进行电磁转换。 在磁头的滑动面上形成两个凹槽，并且在滚筒的旋转方向上彼此对称的位置处形成间隙，以在磁头和磁带或其他磁介质之间提供良好的接触。 在滑动面的表面上形成保护膜。 磁头通过在滚筒的旋转方向上形成在滑动面上的凹槽产生负压，从而改善磁头与磁带之间的接触。
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