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公开(公告)号：JP2000076614A
公开(公告)日：2000-03-14
申请号：JP24047498
申请日：1998-08-26
Inventor： SAITO TADASHI , OGATA SEIICHI , MONMA YUKA , SUZUKI KOJI
Abstract: PROBLEM TO BE SOLVED: To prevent leakage of magnetic flux and to improve core efficiency per inductance by forming depth confirming groove parts of a magnetic gap on magnetic core half bodies nearly parallel to a medium slide surface so that front butt surfaces are notched, and its both end are faced to both side surfaces of core half bodies and filling up conductive material showing non-magnetism in the groove part.
SOLUTION: The groove part 18 as a depth marker deciding the depth zero position 13a of the front gap 13 is formed for precisely and easily reading the depth B being the depth from the slide surface 9 of the front gap 13. The groove part 18 is formed nearly parallel to the slide surface 9 so that the front butt surfaces of a pair of core half bodies are notched, and its both end are faced to both end surfaces of a magnetic head. The conductive material 19 showing the non-magnetism such as Cu is filled up in the groove part 18, and the leakage of the magnetic flux generated in the magnetic core on the groove part 18 is prevented, and the magnetic flux is made to flow convergently through the front gap 13 to reduce the inductance.
COPYRIGHT: (C)2000,JPOAbstract translation: 要解决的问题：为了防止磁通量的泄漏并且通过在几乎平行于介质滑动表面的磁芯半体上形成磁隙的深度确认槽部分使得前部对接表面被切口，从而提高每个电感的磁芯效率，并且其 两端面对芯半体的两侧表面，并填充在槽部分中显示非磁性的导电材料。 解决方案：形成作为确定前间隙13的深度零位置13a的深度标记的凹槽部分18，用于精确且容易地读取距离前间隙13的滑动表面9的深度的深度B.凹槽部分18是 形成为几乎平行于滑动表面9，使得一对芯半体的前对接表面被切口，并且其两端面对磁头的两个端表面。 表示非磁性的导电材料19如Cu被填充在槽部18中，并且防止在磁芯中产生的磁通量在槽部18上的泄漏，使磁通收敛 通过前隙13减小电感。
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公开(公告)号：JPH11144207A
公开(公告)日：1999-05-28
申请号：JP30595797
申请日：1997-11-07
Applicant: SONY CORP
Inventor： INOUE YOSHIHIKO , OGATA SEIICHI , SAITO TADASHI
Abstract: PROBLEM TO BE SOLVED: To provide a magnetic head and manufacture of this magnetic head wherein a metallic magnetic thin film is surely formed. SOLUTION: Relating this magnetic head, the metallic magnetic thin films are obliquely formed on a substrate 4 and also a pair of magnetic core semibodies is furnished, the butting surfaces of which are flattened by filling glasses 8, and a magnetic gap is formed in such a manner that the end surfaces for each other of the metallic magnetic thin films 7 are butted through non- magnetic material. In this case, oxide layers 5 and metallic layers 6 are formed on the substrate 4 so as to be laminated in this order, then the metallic magnetic thin films 7 are formed on these metallic layers 6.
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公开(公告)号：JPH1166513A
公开(公告)日：1999-03-09
申请号：JP21521197
申请日：1997-08-08
Applicant: SONY CORP
Inventor： INOUE YOSHIHIKO , OGATA SEIICHI , SAITO TADASHI
Abstract: PROBLEM TO BE SOLVED: To provide a magnetic head in which a defect such as a disconnection or the like is not caused at a coil formed by forming a thin film and in which the coil is operated satisfactorily and to provide a manufacturing method, for the magnetic head, in which a yield is enhanced greatly. SOLUTION: A magnetic head 1 is provided with a pair of magnetic core half bodies 2, 3 in which metal magnetic thin films 5 are formed obliquely on a substrate 4 and in which butting faces are planarized by filling a glass 6. End faces of the metal magnetic thin films 5 are butted via a nonmagnetic material, and a magnetic gap G is formed. A recess for coil formation is formed on the butting face of at least one out of the magnetic core half bodies 2, 3, and a thin-film coil is formed inside the recess for coil formation. In this case, in at least one out of the magnetic core half bodies 2, 3, the metal magnetic thin films 5 are cut so as to correspond to the recess for coil formation, a protective film 12 is formed so as to cover at least a cut face 9, and the protective film 12 is filled with the glass 6.
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公开(公告)号：JPH10241110A
公开(公告)日：1998-09-11
申请号：JP4667597
申请日：1997-02-28
Applicant: SONY CORP
Inventor： MONMA YUKA , OGATA SEIICHI , SATO MICHIYO , SAITO TADASHI
Abstract: PROBLEM TO BE SOLVED: To alleviate stress to be generated between wire and a protective film due to thermal expansion and shrinkage of the wire, thereby suppressing breaking of the wire, by coating the wire to be used for a terminal portion, a connecting portion and wire bonding with a protective film formed of a silicone resin having elasticity. SOLUTION: Terminal portions 13 of a bulk thin-film type magnetic head 2 are connected to connecting portions 17 of a head base 14 by wire bonding, so that a thin-film coil of the bulk thin-film type magnetic head 2 is electrically connected to a signal recording and reproducing section. When the terminal sections 13 of the bulk thin-film type magnetic head 2, the connecting portions 17, and wire 18 are corroded, a satisfactory electrical connecting condition is not achieved, which results in deteriorated electro-magnetic conversion characteristics of a magnetic head apparatus 1. Therefore, in order to prevent corrosion of these terminal portions 13, the connecting portions 17 and the wire 18, a protective film 19 formed of a silicone-type resin is provided to cover the terminal portions 13, the connecting portions 17 and the wire 18.
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公开(公告)号：JPH1064008A
公开(公告)日：1998-03-06
申请号：JP21578296
申请日：1996-08-15
Applicant: SONY CORP
Inventor： OGATA SEIICHI , SAITO TADASHI , TAKAHASHI SHINJI
Abstract: PROBLEM TO BE SOLVED: To realize an excellent abutment characteristic with a recording medium and to provide a magnetic head with high head efficiency. SOLUTION: The magnetic head 1 is constituted so that a pair of magnetic head half bodies 2a, 2b forming a magnetic layer formed on a non-magnetic substrate and functioning as a magnetic core 4 are joined through a magnetic gap g, and notched parts 9 nearly parallel to the recording medium slide direction are formed on both sides of a recording medium slide surface 8, and an interval between a virtual plane S orthogonally intersecting with the depth direction of the magnetic gap g and coming into contact with the recording medium slide surface 8 and the surface of the notched parts 9 opposite to the recording medium, that is, a slide width working bottom surface 10 is formed so that the interval t2 of both ends vicinity side in the recording medium slide direction is larger than the interval t1 of the magnetic gap vicinity side.
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Patent Agency Ranking
公开(公告)号：JPH1040513A
公开(公告)日：1998-02-13
申请号：JP19754996
申请日：1996-07-26
Applicant: SONY CORP
Inventor： OGATA SEIICHI , SAITO TADASHI , TAKAHASHI SHINJI , INAGUMA TERUYUKI
Abstract: PROBLEM TO BE SOLVED: To visually identify the position of a magnetic gap of a magnetic head. SOLUTION: On a non-magnetic substrate 5, a magnetic head 1 is composed of a metal magnetic layer 5 forming a magnetic core, and a thin film coil 7 winding the magnetic head 5. A pair of magnetic head halves filled with glass 6 is joined, at least, on a part of the metal magnetic layer 5 through a gap material 3 made of non-magnetic material. The gap material 3 is made of a material visually different from the metal magnetic layer 5.
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公开(公告)号：JPH0981905A
公开(公告)日：1997-03-28
申请号：JP23559695
申请日：1995-09-13
Applicant: SONY CORP
Inventor： IKEDA YOSHITO , SAITO TADASHI , TADANO TAKUSHI
Abstract: PROBLEM TO BE SOLVED: To maintain an excellent sliding characteristic to magnetic recording media and to maintain a good sliding characteristic even if the wear of the surface for sliding to the magnetic recording media progresses by pouring fused glass to a magnetic core block from the side opposite to its ground surface and inserting a grinding wheel into each of respective glass grooves to cut respective head chips. SOLUTION: This magnetic head is formed by first molding the glass grooves 21, track width regulating grooves 22 and winding grooves 23 in two substrates consisting of magnetic materials. After the respective magnetic core block half bodies 31, 32 are formed, these half bodies are butted against each other via a gap material and the fused glass is poured into the glass grooves 21 to form the half bodies are joined and integrated and the magnetic core block 33. Next, the surface (a) for sliding to the magnetic recording media is subjected to cylindrical grinding by using a cylindrical grinding machine so that the position of a magnetic gap (g) attains a peak point part to form an R shape. In succession, the grinding wheel is inserted into each of the respective glass grooves 121 into which the fused glass is poured from the side opposite to the surface (a) for sliding with the magnetic recording media, and the magnetic core block 33 is cut and head chips 1 are cut out.
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公开(公告)号：JPH099282A
公开(公告)日：1997-01-10
申请号：JP15728595
申请日：1995-06-23
Applicant: SONY CORP
Inventor： AIDA TAKESHI , SAITO TADASHI
Abstract: PURPOSE: To provide a degaussing coil capable of reusing the copper wire of the degaussing coil by eliminating the influence of the adhesive of an electrical insulating tape wound across the degaussing coil. CONSTITUTION: This degaussing coil 10 comprises a copper wire bundle 11 in which the copper wire that is a conductor is bundled, and the electrical insulating tape 12 used by winding across the copper wire bundle 11 from a start point 13 to an end point 14. The electrical insulating tape 12 is formed in structure without providing the adhesive that is an adhesive means adhered on the means ordinarily, and also, a tape provided with prescribed insulation performance and heat resistance is used. Therefore, since no adhesive is used in the electrical insulating tape, winding work is easily performed, which improves efficiency. Similarly, separation from the wire bundle is facilitated, and also, the copper wire is reused since no residual adhesive component exists in the copper wire bundle.
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公开(公告)号：JPH099182A
公开(公告)日：1997-01-10
申请号：JP15006295
申请日：1995-06-16
Applicant: SONY CORP
Inventor： SAITO TADASHI , TAJIMA KOICHI
Abstract: PURPOSE: To provide the printed circuit board mount device to a cathode ray tube offering mount with excellent job efficiency. CONSTITUTION: A self-hold rivet 8 is inserted to a throughhole 3a of a printed circuit board 3, a cylindrical reception hole 4a of a socket 4, and a reception hole 5c of a cylinder section 5b of a base 5 of a cathode ray tube to mount the printed circuit board 3 to a bottle neck 2 of the cathode ray tube. The mount is attained in one operation by the self-hold rivet 8 and no adhesives is required.
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公开(公告)号：JPH08297823A
公开(公告)日：1996-11-12
申请号：JP10090195
申请日：1995-04-25
Applicant: SONY CORP
Inventor： SAITO TADASHI , SUGANO TAKASHI , TAKAHASHI SHINJI , WATANABE TOSHINOBU
IPC: G11B5/53
Abstract: PURPOSE: To obtain a magnetic head device satisfactory in touch with a magnetic tape and reduced in an interchannel crosstalk. CONSTITUTION: A double azimuth head is constituted by arranging in parallel one pair of magnetic head chips 21, 22 on which each of medium sliding surfaces is formed so that the center of curvature is allowed to exist on virtual straight lines almost parallel to the depth direction of magnetic gap and being away from the magnetic gap by the distance δ expressed by expression (1) δ=R.sinα on a head base. Then, this magnetic head device is constituted by attaching this double azimuth head a rotary drum. Where, in the expression (1), α= sin [(GL/2)/ (D/2)+d}], R is the radius of curvature of a medium sliding surface, GL is the gap distance between magnetic head chips, D is diameter of the rotary drum and (d) is the length of the part where the magnetic chips project from the rotary drum.
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