公开(公告)号：US5655287A

公开(公告)日：1997-08-12

申请号：US530821

申请日：1995-09-20

申请人： Tomoaki Ushiro

发明人： Tomoaki Ushiro

IPC分类号： H01F10/08 ,  H01F27/28 ,  H01F30/00 ,  H01F30/10 ,  H01F41/04 ,  H01F3/02 ,  H01F7/06

CPC分类号： H01F27/2804 ,  H01F30/10 ,  H01F41/043 ,  H01F2027/2809 ,  Y10T29/49055 ,  Y10T29/49078 ,  Y10T29/49126 ,  Y10T29/49789

摘要： Two parts of magnetic layers are placed so as to clamp a coil forming unit consisting of an alternated laminate of non-magnetic layers and electrode layers. The coil forming unit is surrounded by the magnetic body to form a closed magnetic circuit. When manufacturing the laminated transformer, a plurality of sets of U-shaped electrodes are deposited on non-magnetic green sheets. Then, the non-magnetic green sheets are laminated to form the coil forming unit consisting of the alternated laminate of the non-magnetic layers and the electrode layers. Magnetic green sheets are laminated thereto and clamp the non-magnetic green sheets therebetween to form a laminate. The laminate is pressed and additional magnetic body portions are formed in the center and on the side faces of the coil forming units. The laminate is pressed and cut into green elements. The green elements are sintered into monolithic bodies of the laminated transformer.

摘要翻译： 放置两层磁性层以夹紧由非磁性层和电极层的交替叠层组成的线圈形成单元。 线圈形成单元被磁体包围以形成闭合磁路。 当制造层压变压器时，在非磁性生片上沉积多组U形电极。 然后，非磁性生片被层叠，形成由非磁性层和电极层的交替叠层构成的线圈形成单元。 将磁性生片层压到其上并将非磁性生片夹在其间以形成层压体。 层叠体被压制，并且在线圈成形单元的中心和侧面形成附加的磁性体部分。 将层压板压制成绿色元件。 绿色元件被烧结成层压变压器的单块体。

公开(公告)号：US5546650A

公开(公告)日：1996-08-20

申请号：US263828

申请日：1994-06-22

申请人： Richard H. Dee

发明人： Richard H. Dee

IPC分类号： G11B5/127 ,  G11B5/17 ,  G11B5/29 ,  G11B5/31 ,  G11B5/39 ,  G11B5/48 ,  G11B5/42

CPC分类号： G11B5/127 ,  G11B5/17 ,  G11B5/29 ,  G11B5/3103 ,  G11B5/3106 ,  G11B5/313 ,  G11B5/3153 ,  G11B5/4893 ,  G11B5/3967 ,  Y10T29/49048 ,  Y10T29/49055 ,  Y10T29/49064

摘要： A method of manufacturing a thin-film magnetic head having a write element capable of producing a magnetic flux density sufficient to write the high coercivity magnetic tapes at high track density. The manufacturing process requires a minimum number of lithographic steps, thereby increasing the yield of the multiple track magnetic head module. A trench is cut into the ferrite substrate material and filled with an insulator to produce a more efficient write element. A recess is then formed in the ferrite substrate having a geometry sufficient to hold a deposited thin-film conductive coil below the surface of the ferrite substrate. An insulator is then deposited on the ferrite substrate to form a gap spacer as well as to insulate the conductive thin-film coils from the ferrite substrate. The conductive thin-film coil is then deposited on the ferrite substrate in the recesses. A high-saturation flux density magnetic material is deposited on a planar nonmagnetic closure section and formed into separate magnetic pole pieces for each individual track. The magnetic pole pieces are then insulated from each other to produce a closure section having a planar surface matable with the ferrite substrate. The closure section is attached to the substrate by aligning the metal pole piece on the closure section is attached to the substrate by aligning the metal pole piece on the closure section. The magnetic pole piece is positioned in the front gap and has a width which defines the track width on the magnetic tape. The magnetic pole piece is also positioned to substantially cover the back gap region to increase the flux density existing at the front gap region.

摘要翻译： 一种具有写入元件的薄膜磁头的制造方法，该写入元件能够产生足以以高磁道密度写入高矫顽力磁带的磁通密度。 制造过程需要最少数量的光刻步骤，从而提高多轨磁头模块的产量。 将一个沟槽切割成铁氧体衬底材料并填充绝缘体以产生更有效的写元件。 然后在铁氧体衬底中形成具有足以将沉积的薄膜导电线圈保持在铁氧体衬底的表面下方的凹槽。 然后将绝缘体沉积在铁氧体衬底上以形成间隙隔离物，并使导电薄膜线圈与铁氧体衬底绝缘。 然后将导电薄膜线圈沉积在凹槽中的铁氧体衬底上。 高饱和磁通密度磁性材料沉积在平面非磁性闭合部分上，并形成为每个独立磁道的单独的磁极片。 然后将磁极片彼此绝缘以产生具有与铁氧体衬底配合的平坦表面的封闭部分。 通过将闭合部分上的金属极片对准在封闭部分上的金属极片，将封闭部分附接到基板上，该金属极片附接到基板。 磁极片位于前间隙中，具有限定磁带上的轨道宽度的宽度。 磁极片也被定位成基本上覆盖背隙区域以增加存在于前间隙区域处的通量密度。

公开(公告)号：US5150511A

公开(公告)日：1992-09-29

申请号：US708388

申请日：1991-05-31

申请人： Katsumi Sakata ,  Tatsuo Kumura ,  Atsushi Suzuki ,  Yoshito Ikeda ,  Kaoru Aoki ,  Naoto Kojima ,  Akio Mishima

发明人： Katsumi Sakata ,  Tatsuo Kumura ,  Atsushi Suzuki ,  Yoshito Ikeda ,  Kaoru Aoki ,  Naoto Kojima ,  Akio Mishima

IPC分类号： G11B5/127 ,  G11B5/187 ,  G11B5/23

CPC分类号： G11B5/232 ,  G11B5/1272 ,  G11B5/187 ,  Y10T29/49055

摘要： A method for manufacturing a magnetic transducer head in which a track width regulating grooves provided on both edges of a magnetic gap are filled by blowing a powder beam of nonmagnetic material having a very fine particle size to deposit the nonmagnetic material in the grooves. A pair of magnetic core members are bonded together to form a magnetic gap therebetween by providing a metal layer of a bonding surface of the core members and applying a pressure to the core members under an elevated temperature to cause a mutual diffusion of the metal to bond the core members together. Thus the magnetic transducer head can be made without using a high-temperature heat treatment.

公开(公告)号：US5123156A

公开(公告)日：1992-06-23

申请号：US566345

申请日：1990-08-22

申请人： Paul-Louis Meunier ,  Jean-Marc Coutellier

发明人： Paul-Louis Meunier ,  Jean-Marc Coutellier

IPC分类号： G11B5/127 ,  G11B5/187 ,  G11B5/255 ,  G11B5/31

CPC分类号： G11B5/255 ,  G11B5/127 ,  G11B5/187 ,  G11B5/3163 ,  G11B5/3183 ,  Y10T29/49046 ,  Y10T29/49055

摘要： A magnetic head and a method for producing the magnetic head comprising the steps of:producing a groove in a first face of a substrate;depositing a material having good magnetic characteristics on the walls of the groove;depositing a non-magnetic material in the groove over the material having good magnetic characteristics;machining a second face of the substrate until the non-magnetic material is reached, so as to create a magnetic gap; andbonding a part carrying a magnetic layer onto the first face of the substrate so as to form a magnetic circuit.

摘要翻译： PCT No.PCT / FR89 / 00657 Sec。 371日期1990年8月22日 102（e）1990年8月22日PCT PCT 1989年12月15日PCT公布。 第WO90 / 07772号公报 日本1990年7月12日。一种磁头及其制造方法，其特征在于，包括：在基板的第一面上形成槽; 在槽的壁上沉积具有良好磁特性的材料; 在具有良好磁特性的材料上的凹槽中沉积非磁性材料; 加工衬底的第二面，直到达到非磁性材料，从而产生磁隙; 以及将承载有磁性层的部分接合到所述基板的第一面上，以形成磁路。

公开(公告)号：US5079831A

公开(公告)日：1992-01-14

申请号：US652134

申请日：1991-02-07

申请人： James Reid

发明人： James Reid

IPC分类号： G11B5/31 ,  G11B5/39

CPC分类号： G11B5/3106 ,  G11B5/3903 ,  G11B5/3166 ,  G11B5/3954 ,  Y10T29/49043 ,  Y10T29/49055 ,  Y10T29/49064

摘要： The present invention is a method for constructing dual stripe magnetoresistive read heads by depositing each stripe on a separate substrate and then bringing the stripes together in the assembly process. The method of the present invention first forms two substrates and deposits a layer from which conductor leads and stripes will be defined upon them. Connecting pads are provided to allow all the conductor leads to terminate on one substrate and connect with a standard flex circuit. After the leads and stripes are defined, a layer of insulation is then placed over the stripes, leads and substrates. Finally, the substrates are shaped to the preferred from and mounted together to form a recording head with the magnetoresistive stripes precisely positioned adjacent to each other. Advantageously, this method permits the deposition of the MR strips at the same time and under the same deposition conditions.

摘要翻译： 本发明是一种用于通过在分离的衬底上沉积每个条带然后在组装过程中将条纹带到一起来构造双条磁阻读取头的方法。 本发明的方法首先形成两个基板并沉积一层，在该层上定义导体引线和条纹。 提供连接焊盘以允许所有导体引线终止于一个基板上，并与标准柔性电路连接。 在定义引线和条纹之后，然后将一层绝缘层放置在条纹，引线和基底上。 最后，将基板成形为优选并安装在一起以形成具有精确定位成相邻的磁阻条的记录头。 有利地，该方法允许在相同的沉积条件下同时沉积MR条带。

公开(公告)号：US5025343A

公开(公告)日：1991-06-18

申请号：US564186

申请日：1990-08-08

申请人： Shinzi Iida ,  Fuminori Takeya ,  Shinya Aoki

发明人： Shinzi Iida ,  Fuminori Takeya ,  Shinya Aoki

IPC分类号： G11B5/133 ,  G11B5/193 ,  G11B5/23

CPC分类号： G11B5/232 ,  G11B5/1335 ,  G11B5/193 ,  Y10T29/49048 ,  Y10T29/49055

摘要： A magnetic head core having a generally annular structure with an inner coil-winding aperture, and a magnetic gap which has a predetermined width and which is formed so as to extend in a direction across the annulus of the annular structure. The annular structure is formed by a plurality of ferrite core elements bonded together by direct solid-solid reaction bonding, with a non-magnetic layer of SiO or SiO.sub.2 interposed between two opposed portions of the ferrite core elements which define the magnetic gap. The non-magnetic layer defines the width of the magnetic gap.

公开(公告)号：US4951381A

公开(公告)日：1990-08-28

申请号：US416215

申请日：1989-10-02

申请人： Koji Yamazaki ,  Shinichi Okuyama ,  Kazuhiko Watanuki ,  Ken Toyoshima

发明人： Koji Yamazaki ,  Shinichi Okuyama ,  Kazuhiko Watanuki ,  Ken Toyoshima

IPC分类号： G11B5/10 ,  G11B5/187 ,  G11B5/193 ,  G11B5/60

CPC分类号： G11B5/6005 ,  G11B5/10 ,  G11B5/1871 ,  G11B5/193 ,  Y10T29/49034 ,  Y10T29/49041 ,  Y10T29/49048 ,  Y10T29/49055

摘要： There is provided a method of manufacturing magnetic head sliders comprising the steps of cutting a material block, which may be of sintered ferrite or ceramic material, to form a core block and slider block. A groove is formed in the core block, which is bonded to the slider block using techniques to provide a magnetic gap. Thereafter the core block is machined to form a plurality of head cores, followed by machining the slider block to form in parallel a number of sliders, which are lapped and then sliced into individual magnetic head sliders. To prevent particles of material from the magnetic head sliders from separating from the sliders and causing deleterious effects, such as head crashes, a heat treating process is employed in which the slider block and core block are treated for from 3 to 20 hours at a temperature of from 100.degree. C. to 150.degree. C., at an ambient air pressure of from 1.5 to 5 kg/cm.sup.2 and at a relative humidity of not less than 60%. In one embodiment the heat treatment is performed immediately following the step of cutting the material to form the core block and slider block. In another embodiment, the heat treatment is performed immediately prior to lapping the sliders.

摘要翻译： 提供了一种制造磁头滑块的方法，包括以下步骤：切割可以是铁氧体或陶瓷材料的材料块，以形成芯块和滑块。 在芯块中形成凹槽，该凹槽使用提供磁隙的技术结合到滑动块。 此后，加工芯块以形成多个头芯，随后加工滑块以平行地形成多个滑块，这些滑块被研磨，然后切成单独的磁头滑块。 为了防止磁头滑块中的材料颗粒与滑块分离并引起诸如头部碰撞的有害影响，采用热处理工艺，其中滑块和芯块在温度下处理3至20小时 的温度为100℃至150℃，环境空气压力为1.5至5kg / cm2，相对湿度不小于60％。 在一个实施例中，在切割材料的步骤之后立即进行热处理以形成芯块和滑块。 在另一个实施例中，在研磨滑块之前立即进行热处理。

公开(公告)号：US4942658A

公开(公告)日：1990-07-24

申请号：US277737

申请日：1988-11-30

申请人： Timothy W. Vandnais ,  Judy M. Ekern ,  Douglas J. Hennenfent

发明人： Timothy W. Vandnais ,  Judy M. Ekern ,  Douglas J. Hennenfent

IPC分类号： G11B5/133 ,  G11B5/127 ,  G11B5/187 ,  G11B5/23

CPC分类号： G11B5/232 ,  G11B5/1272 ,  G11B5/1878 ,  Y10T29/49043 ,  Y10T29/49055 ,  Y10T29/49067

摘要： A process for assembling the I core and C core element of a ferrite magnetic transducer core includes the steps of depositing by sputtering a gap material on the gap face of one core element. A magnetic material of the type which can be bonded to ferrite by heat and pressure is then sputter deposited on the gap material. The surface of the magnetic material is then juxtaposed to the gap face of the other element and heat and pressure below a pint which may affect the ferrite's magnetic characteristics is used to diffusion bond the two elements to each other. It is possible to use a layer of Sendust Fe-Si-Al high permeability alloy or other high permeability material as the magnetic material deposited on the gap material if this enhancement of the core is desired. In any case, higher than customary clamping pressure along with lower than customary temperature is used to effect the bond.

公开(公告)号：US4939835A

公开(公告)日：1990-07-10

申请号：US366954

申请日：1989-06-16

申请人： Jean-Marc Coutellier ,  Alain Jacobelli ,  Henriette Magna ,  Paul-Louis Meunier

发明人： Jean-Marc Coutellier ,  Alain Jacobelli ,  Henriette Magna ,  Paul-Louis Meunier

IPC分类号： G11B5/187

CPC分类号： G11B5/1871 ,  Y10T29/49048 ,  Y10T29/49055

摘要： A method for achieving the planar surface of an active face for magnetic recording/reading heads. The planar surface of the active face is obtained by grinding, the active face being of the type where, before the grinding operation, the level of the material forming the gap is recessed with respect to the magnetic poles, the method comprising depositing over the recess a thin layer of non-magnetic material with a thickness at least equal to the recess of the gap. The non-magnetive thin layer may then be ground to obtain the planar surface of the active face.

摘要翻译： 一种用于实现磁记录/读取头的有源面的平面的方法。 有源面的平面是通过研磨获得的，所述有源面是在研磨操作之前，形成间隙的材料的高度相对于磁极凹陷的方式，所述方法包括在所述凹部 薄层的非磁性材料，其厚度至少等于间隙的凹槽。 然后可以研磨非磁性薄层以获得活性面的平面。

公开(公告)号：US4878141A

公开(公告)日：1989-10-31

申请号：US228679

申请日：1988-08-05

申请人： Masataka Koyama

发明人： Masataka Koyama

IPC分类号： G11B5/235 ,  G11B5/127 ,  G11B5/133 ,  G11B5/147 ,  G11B5/193 ,  G11B5/23

CPC分类号： G11B5/193 ,  G11B5/127 ,  G11B5/1335 ,  G11B5/232 ,  Y10T29/49048 ,  Y10T29/49055

摘要： Disclosed is a magnetic head comprising first and second magnetic core halves held in abutment against each other and a gap-defining spacer interposed therebetween, and having an elongated tape-contact surface extending across said gap-defining spacer. The gap-defining spacer has the same crystal structure as that of said first and second core halves and is made of a non-magnetic material including the same principal component as those of said first and second cores halves. The gap-defining spacer is welded to said first and second core halves in accordance with a solid-phase welding method based on a solid-phase reaction.

摘要翻译： 公开了一种磁头，其包括保持彼此抵接的第一和第二磁性半部以及插入其间的间隙限定衬垫，并且具有延伸穿过所述间隙限定衬垫的细长带状接触表面。 间隙限定垫片具有与所述第一和第二芯半部相同的晶体结构，并且由与所述第一和第二芯部半部分相同的主要成分的非磁性材料制成。 根据基于固相反​​应的固相焊接方法将间隙限定间隔件焊接到所述第一和第二半部。