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1. 发明专利

JP2004079090A Recording and reproduction separation type magnetic head 审中-公开
标题翻译：记录和再现分离型磁头
公开(公告)号：JP2004079090A
公开(公告)日：2004-03-11
申请号：JP2002239059
申请日：2002-08-20
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： NAKANISHI EIJI , ISONO CHIHIRO , TADOKORO SHIGERU , YONEKAWA SUNAO , MATSUZAKI TETSUYA , MATSUSHITA MASAO
IPC分类号： G11B5/31 , G11B5/39 , G11B5/40
CPC分类号： B82Y25/00 , B82Y10/00 , G11B5/3106 , G11B5/3116 , G11B5/3136 , G11B5/3173 , G11B5/3967 , G11B5/40 , G11B2005/3996
摘要： PROBLEM TO BE SOLVED: To provide a magnetic head which is excellent in slidable reliability and suitable to narrow floatation by avoiding contact with a recording medium by head deformation caused by a heated head.
SOLUTION: A step (recessed part) of 3 mm is formed on a floating surface protective film of a part corresponding to an inductive thin film recording head of a recording and reproduction separation type magnetic head, and projected parts on a floating surface caused by head heat deformation are offset. This effectively reduces projections to the floating surface and prevents contact with a recording medium.
COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题：提供一种滑动可靠性优异并且适于通过避免由加热头导致的头部变形而与记录介质接触而使浮子变窄的磁头。解决方案：在与记录和再现分离型磁头的感应薄膜记录头对应的部分的浮动表面保护膜上形成3mm的台阶（凹陷部分），并且浮动表面上的投影部分由头部热变形引起的偏移。这有效地减少了对浮动表面的投影并防止与记录介质的接触。版权所有（C）2004，JPO

2. 发明专利

JP2003326453A Magnetic head, magnetic disk device, manufacturing method of magnetic head and polishing device 审中-公开
标题翻译：磁头，磁盘装置，磁头和抛光装置的制造方法
公开(公告)号：JP2003326453A
公开(公告)日：2003-11-18
申请号：JP2002129749
申请日：2002-05-01
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： CHIBA HIROSHI , INABA HIROSHI , SASAKI SHINJI , TAMURA TOSHIO , ISONO CHIHIRO
IPC分类号： B24B37/00 , B24B37/12 , G11B5/60 , G11B21/21 , B24B37/04
摘要： PROBLEM TO BE SOLVED: To manufacture a magnetic head in a reduced state of machining irregularity and surface roughness of a floating face side in polishing of a floating face. SOLUTION: The floating face of the magnetic head facing a recording medium face of a magnetic disk is integrally formed on a base material by the same material as the base material while it is fed with lubricant, and it is ground by a cutting edge (a base) 26 formed with a diamond thin film 27 on a surface. By this, a magnetic head with an extensively reduced floating amount with respect to a magnetic recording medium is provided and the magnetic disk device with significantly improved planar recording density of a magnetic disk is provided. COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题：在浮动面的抛光中制造加工不平整度和浮动面侧的表面粗糙度的减小状态的磁头。解决方案：面向磁盘的记录介质面的磁头的浮动面通过与基材相同的材料一体地形成在基材上，同时供给润滑剂，并且通过切割将其研磨在表面上形成有金刚石薄膜27的边缘（基底）26。由此，提供了相对于磁记录介质具有大大降低的浮动量的磁头，并且提供了具有显着提高的磁盘的平面记录密度的磁盘装置。版权所有（C）2004，JPO

3. 发明专利

JP2003077105A Thin-film magnetic head, thin-film magnetic head slider, its manufacturing method, and magnetic disk device 有权
标题翻译：薄膜磁头，薄膜磁头滑块及其制造方法和磁盘设备
公开(公告)号：JP2003077105A
公开(公告)日：2003-03-14
申请号：JP2001262653
申请日：2001-08-31
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： KATO TAKAHIRO , SAIKI NORIYUKI , ISONO CHIHIRO , KIKUCHI HIROSHI
IPC分类号： G11B5/31 , G11B5/60
CPC分类号： G11B5/6005 , Y10T29/49032
摘要： PROBLEM TO BE SOLVED: To provide a highly reliable thin-film magnetic head capable of effectively suppressing the corrosion of a magnetic film in an aqueous solution in a polishing and washing step, a thin-film magnetic head slider, a magnetic disk device and its manufacturing method. SOLUTION: A conductor is formed by conductive contact so as to be exposed outside through an internal metal film from a magnetic film as a recording magnetic pole. The conductor has a standard electrode potential ser higher for the magnetic film in an aqueous solution, and the surface area of the conductor is set larger than the sectional area of the magnetic film on a floating surface opposite a magnetic recording medium. Thus, the corrosion of the recording magnetic film in the thin-film magnetic head manufacturing process is suppressed. Moreover, recording/reproducing characteristics are improved by preventing the thinning of the magnetic film caused by the corrosion.
摘要翻译：要解决的问题：为了提供一种高可靠性的薄膜磁头，能够有效地抑制研磨和洗涤步骤中的水溶液中的磁性膜的腐蚀，薄膜磁头滑块，磁盘装置及其制造方法。解决方案：导体由导电接触形成，以便通过内部金属膜从作为记录磁极的磁性膜暴露在外部。导体对于水溶液中的磁性膜具有较高的标准电极电位，并且将导体的表面积设定为大于与磁记录介质相对的浮动面上的磁性膜的截面面积。因此，抑制了薄膜磁头制造工序中的记录磁性膜的腐蚀。此外，通过防止由腐蚀引起的磁性膜的变薄，改善了记录/再现特性。

4. 发明专利

JP2003331409A Magnetic head slider and its manufacturing method 审中-公开
标题翻译：磁头滑块及其制造方法
公开(公告)号：JP2003331409A
公开(公告)日：2003-11-21
申请号：JP2002375859
申请日：2002-12-26
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： TANAKA HIDEAKI , FURUSAWA KENJI , SEKI TAKATERU , TAKAKURA AKIO , ISONO CHIHIRO
IPC分类号： G11B5/60 , G11B21/21
摘要： PROBLEM TO BE SOLVED: To provide the highly reliable floating surface shape of a magnetic head slider capable of dealing with low floating. SOLUTION: When the floating surface of the magnetic head slider is brought into contact with a lap surface to be lapped, lapping is performed in the state of increased rigidity applied therebetween and, by controlling standard deviation between the flatness of the lapped floating surface and the recessed amount of the floating surface and a magnetic element part, the magnetic head slider capable of low float driving is efficiently produced. COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题：提供能够处理低浮动的磁头滑块的高度可靠的浮动表面形状。
解决方案：当磁头滑块的浮动表面与要研磨的搭接表面接触时，在其间施加的刚性增加的状态下进行研磨，并且通过控制重叠浮动的平坦度之间的标准偏差表面和浮动表面的凹陷量以及磁性元件部分，能够有效地制造能够进行低浮动驱动的磁头滑块。版权所有（C）2004，JPO

5. 发明专利

JP2005028470A Magnetic head manufacturing method, polishing tool for manufacture, and polishing tool manufacturing method 审中-公开
标题翻译：磁头制造方法，制造抛光工具和抛光工具制造方法
公开(公告)号：JP2005028470A
公开(公告)日：2005-02-03
申请号：JP2003193798
申请日：2003-07-08
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： CHIBA HIROSHI , SASAKI SHINJI , INABA HIROSHI , ISONO CHIHIRO
IPC分类号： B24B37/12 , B24B37/14 , G11B5/31 , B24B37/04
摘要： PROBLEM TO BE SOLVED: To satisfy characteristics required of a magnetic element part while obtaining a smooth levitation surface by reducing machining step difference on the levitation surface side in machining a magnetic head. SOLUTION: A surface table 30 for polishing a magnetic head levitation surface is provided with hard projecting parts 32 on the surface of an elastic support plate 31 formed of tin or its alloy, and the tip parts of the hard projecting parts 32 are formed as cutting edge parts 33 for polishing a workpiece (a raw bar of the magnetic head) 35. Insulating films formed of SiO 2 or the like are formed at portions excluding the hard projecting parts 32 on the surface of the elastic support plate 31. The density of the hard projecting parts 32 is set to at least 10 per μm 2 , and the cutting edge part 33 of each hard projecting part 32 is within the nearly same plane with a height within a range of 20 nm or less from the surface of the elastic support plate 31 or the surface of the insulating film 34. The levitation surface of the magnetic head is thereby finish-machined with high accuracy by polishing the workpiece 35. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：为了满足磁性元件部分所需的特性，同时通过减少在磁头加工中的悬浮表面侧上的加工阶差，同时获得平滑悬浮表面。解决方案：用于抛光磁头悬浮表面的表台30在由锡或其合金形成的弹性支撑板31的表面上设置有硬突出部分32，并且硬突出部分32的尖端部分形成为用于研磨工件（磁头的原料棒）的切削刃部33。35.由表面上的硬突出部32以外的部分形成由SiO 2 等形成的绝缘膜弹性支撑板31的密度。硬突出部32的密度设定为每μm 2 至少10，并且每个硬突出部32的切割边缘部33在几乎相同的平面内高度在距离弹性支撑板31的表面或绝缘膜34的表面20nm以下的范围内。因此，通过对工件35进行研磨，磁头的悬浮表面被高精度地精加工。版权所有（C）2005，JPO＆NCIPI

6. 发明专利

JP2004087056A Thin-film magnetic head and method for manufacturing the same 审中-公开
公开(公告)号：JP2004087056A
公开(公告)日：2004-03-18
申请号：JP2002249895
申请日：2002-08-29
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： CHIBA HIROSHI , HOTTA HIDEJI , SASAKI SHINJI , ISONO CHIHIRO
IPC分类号： G11B5/31 , G11B5/39
摘要： PROBLEM TO BE SOLVED: To obtain a smooth floating surface by decreasing the differences in level of working on a floating surface side in working of a magnetic head comprising materials varying in hardness. SOLUTION: This thin-film magnetic head characterized in that the surface shape of an element section consisting of an upper shielding film, lower shielding film, write element and reproducing element of the floating surface of the magnetic head is a rugged shape of surface roughness of ≤5 nmRmax in surface roughness when measured by using an inter-atomic power microscope using a single crystalline silicon probe of ≤10 nmR tip diameter and ≤10 (1/μm) space frequency of FFT power spectra of a surface profile, is obtained by subjecting the surface of single crystalline diamond to grooving and working the floating surface of the magnetic head while pressing a comb-shaped cutting edge of ≤5 μm width and ≤5 μm groove depth to the floating surface of the magnetic head under specified load and oscillating the cutting edged to one direction in the longitudinal direction of the magnetic head robber at a frequency of 10 to 100 Hz. COPYRIGHT: (C)2004,JPO

7. 发明专利

JP2001067629A PRODUCTION OF THIN FILM MAGNETIC HEAD 失效
公开(公告)号：JP2001067629A
公开(公告)日：2001-03-16
申请号：JP23784399
申请日：1999-08-25
申请人： HITACHI LTD
发明人： YAMAKURA HIDEO , ISONO CHIHIRO , TANAKA KOJI
IPC分类号： G11B5/31 , B24B49/16 , G11B5/39
摘要： PROBLEM TO BE SOLVED: To provide a method for manufacturing a MR head by which correction error in a polishing processing for controlling MR element height is reduced and the MR element height is controlled with high precision by suppressing a waviness component of the MR element generated in a preprocess of the polishing processing for controlling the MR element height. SOLUTION: A row bar in the polishing processing process for controlling the MR element height is divided in a longitudinal direction, distribution of the MR element height size is approximated by a quadratic curve individually in each area. Then operation for controlling load applied to each area so as to make each quadratic curve approach to a straight line, operation for controlling load applied to each area joint so as to align joints between areas and MR element height sizes of both end parts of the row bar in a line and operation for controlling load applied to left and right of the raw bar so as to minimize the inclination of the straight line, by which the MR element height size of whole row bar is approximated, are performed. Therefore the MR element height can be processed with high precision in the polishing processing process for controlling the MR element height.

8. 发明专利

JPH11250414A THIN FILM MAGNETIC HEAD AND PRODUCTION THEREFOR 失效
公开(公告)号：JPH11250414A
公开(公告)日：1999-09-17
申请号：JP5030998
申请日：1998-03-03
申请人： HITACHI LTD
发明人： SEKI TAKATERU , TAMURA TOSHIO , ISONO CHIHIRO
IPC分类号： G11B5/31 , G11B5/29
摘要： PROBLEM TO BE SOLVED: To improve the yield in a process by forming plural elements in a slider while shifting them in the direction of a gap depth and selecting elements satisfying a magnetic gap depth and performance after the grinding works of floating surfaces. SOLUTION: First and second element 1, 2 are formed on ALTiC(Al2 O3 -TiC) material 7 in an adjacent relation and by being mutually shifted in a depth direction by the twice of the depth accuraccy (a) of the magnetic gap of the element, that is, 2a. A block in which a wafer is cutingly divided into a prescribe size is adhered to a grinding jig and the floating surface of the block is ground so that the depths of the magnetic gaps of the elements enter into desired dimensional ranges. Rails 8 for making the floating surface float from a magnetic disk are formed with ion milling. After the block is cutingly divided into individual sliders, floating surfaces are ground finished. Then, after the sliders are respectively mounted on suspensions, depths of the magnetic gaps and performance are measured and electrodes 3, 6 being elements for readout and electrodes 4, 5 being elements for write are selectively connected to the elements 1, 2 by selecting the elements 1, 2 satisfying the specifications.

9. 发明专利

JPH06179162A WORKING FOR MAGNETIC HEAD AND DEVICE THEREFOR 失效
公开(公告)号：JPH06179162A
公开(公告)日：1994-06-28
申请号：JP33167592
申请日：1992-12-11
申请人： HITACHI LTD
发明人： AIKAWA SHIGEO , FUJISAWA MASAYASU , ISONO CHIHIRO
IPC分类号： B24B19/26 , B24B41/06 , G11B5/187 , G11B21/21
摘要： PURPOSE:To prevent the adhesion between a magnetic disc and a magnetic head on the start of revolution, by forming a crowning worked surface having a uniform convex curvature on the floating-up the surface of the magnetic head, with high precision and high efficiency. CONSTITUTION:A magnetic head working device is equipped with a polishing jig 3 which is formed by placing a number of magnetic heads 1 arranged in one row on the upper and undersurfaces of a polishing surface plate 2 which can be turned at a prescribed speed in one direction and a dummy member 7 which is formed to the equal dimension and shape to those of the magnetic head 1, in the contact state on the upper surface of the polishing surface plate 2 through a parallel leaf spring 4 only on the dummy member 7 side, through the relative parallel arrangement, keeping a prescribed interval, and a plurality of rollers 5 which guide and support the polishing jig 3 and are driven in a turnable manner at a certain speed ratio to the revolution speed of the polishing surface plate 2. When the polishing surface plate 2 and the polishing jig 3 are turned, the polishing jig 3 is put into the oscillation swing movement in repetition by the cyclic extension and contraction of the parallel leaf spring 4.

10. 发明专利

JPH06176321A POLISHING DEVICE AND POLISHING METHOD FOR MAGNETIC HEAD 失效
公开(公告)号：JPH06176321A
公开(公告)日：1994-06-24
申请号：JP32434892
申请日：1992-12-03
申请人： HITACHI LTD
发明人： WAKI YOSHIHARU , FUJISAWA MASAYASU , ISONO CHIHIRO , YAMASAKA MINORU
IPC分类号： G11B5/31 , G11B5/60 , G11B21/21
摘要： PURPOSE:To enable the polishing of the floating surface of a magnetic head to an arbitrary projecting shape in the state of adhering the magnetic head to a supporting spring and to decrease the working level difference between a head substrate and a magnetic film. CONSTITUTION:The magnetic head 7 which is mounted with an X table 1, a Y table 2, a Z table 3, an theta motor 4 and a phi motor 5 and is adhered to the supporting spring 6 mounted to the theta motor 4 is oscillated in an orbit of an arbitrary function. The magnetic head 7 is pressed and oscillated to a diamond disk 9 for polishing mounted to an air spindle 8 and is brought into sliding contact therewith, by which the floating surface shape of the magnetic head is generated and polished.

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