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公开(公告)号：JPH07220217A
公开(公告)日：1995-08-18
申请号：JP897094
申请日：1994-01-31
Applicant: SONY CORP
Inventor： SAITO TADASHI , TAKAHASHI SHINJI , WATANABE TOSHINOBU , SATO ATSUSHI
Abstract: PURPOSE:To obviate generation of chipping of substrates, etc., by forming track width regulating grooves on main surfaces of a pair of magnetic core substrates from which surfaces work hardened layers are removed. CONSTITUTION:A pair of magnetic core half bodies 1, 2 deposited and formed with magnetic metallic films 5, 6 on the opposite surfaces of the magnetic core substrates 3, 4 consisting of an oxide magnetic material, such as ferrite, are joined and integrated in such a manner that these magnetic metallic films are butted against each other. A magnetic gap 91 which acts to execute recording or reproducing or both thereof is formed between the butt surfaces of the magnetic metallic films 5, 6. First and second glass grooves 24, 25 are formed at a prescribed spacing between the first winding groove 23 and second winding groove 26 of the one main surface 21a of the substrate 21 in parallel with both grooves 23, 26 without reaching-a projecting part 22 in such a manner that the first winding groove 23 and the first glass groove 24 are adjacent to each other and that the second winding groove 26 and the second glass groove 25 are adjacent to each other. Next, the one surface 21a is subjected to mirror finishing to remove the work hardened layer generated by grinding. As a result, the chipping and tack breakage of the substrate 21 are substantially prevented even if the track width regulating grooves are formed in a post stage.
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公开(公告)号：JPH0714119A
公开(公告)日：1995-01-17
申请号：JP15348193
申请日：1993-06-24
Applicant: SONY CORP
Inventor： SAITO TADASHI , MATSUMOTO TAKEKATSU
IPC: G11B5/31
Abstract: PURPOSE:To capture and discharge the magnetic powder fallen from a magnetic recording medium and the dust existing in the atm. air and to decrease the errors by generation of clogging so as to obtain good recording and reproducing characteristics by providing at least one side of the gap part of magnetic head elements with dust removing grooves. CONSTITUTION:Both side parts of the gap part of the magnetic head elements are provided with the dust removing grooves 8 so as to notch a part of magnetic recording medium-sliding surfaces 5 in a medium traveling direction (arrow X direction). The magnetic recording medium-sliding surfaces 5 of this thin-film magnetic head are ground to be an arc shape in section in order to assure the contact with the magnetic recording medium and to lower spacing loss. The magnetic head elements are joined with protective plates 2 via joint layers 7 consisting of glass, etc., thereby, the elements are protected and the contact with the magnetic recording medium is assured. The depth of the dust removing grooves 8 is set deeper than the depth zero position of the magnetic gap.
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公开(公告)号：JPH0684128A
公开(公告)日：1994-03-25
申请号：JP26052492
申请日：1992-09-04
Applicant: SONY CORP
Inventor： SUGANO TAKASHI , SAITO TADASHI
Abstract: PURPOSE:To obtain a magnetic head which enables high density recording and generates high reproducing outputs. CONSTITUTION:Ferromagnetic metallic thin films 3, 4 as a second magnetic body are arranged at the face where magnetic cores 1, 2 of oxide magnetic bodies butt against each other, thereby to constitute magnetic core half bodies 11, 12. The butting width of the metallic thin films 3, 4 is regulated by regulating notches 1b, 2b. The magnetic bodies butt each other also at the outside of the regulating notches 1b, 2b. Both end parts of a sliding face are processed to be rails along the sliding direction of a magnetic recording medium, and therefore the touching width to the magnetic recording medium is regulated. The butting width of the ferromagnetic metallic thin films 3, 4, namely, the track width Tw is set to be smaller than 25mum, and the butting width A of the magnetic bodies at the outside of the regulating notches is respectively not larger than 50mum.
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公开(公告)号：JPH0660318A
公开(公告)日：1994-03-04
申请号：JP22528192
申请日：1992-07-31
Applicant: SONY CORP
Inventor： SAITO TADASHI , OGATA SEIICHI , SUGANO TAKASHI , TAKAHASHI SHINJI , URAI AKIRA , SATO TAKASHI , KOBAYASHI TOMIO
Abstract: PURPOSE:To obtain a magnetic head superior in wear resistance by approximately linearly forming metallic magnetic films at an angle to the magnetic head running direction. CONSTITUTION:Magnetic core half bodies I and II where a metallic magnetic film 1 is interposed between a pair of guard materials 2 and 3 are butted, and a magnetic gap (g) is constituted between butting faces. Winding grooves 4 and 5 are formed in core half bodies I and II respectively, and coils are wound around these grooves to supply/take out signals to/from a head. Metallic magnetic films 1 are multilayered films where thin films made of a high-permeability material like 'Sendust(R)' are laminated with an insulating film between them, and guard materials 2 and 3 are made of ferrite. End faces on the sides opposite to the gap (g) forming sides of metallic magnetic films 1 are so cut that they slightly stand back from side faces of magnetic core half bodies I and II, and end parts are filled with glass 8. Since the extension direction of magnetic films 1 is made nonparallel with the tape sliding direction of the magnetic head, a proportion occupied by the magnetic films 1 on the tape slide face is considerably reduced.
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公开(公告)号：JPH05151515A
公开(公告)日：1993-06-18
申请号：JP31696691
申请日：1991-11-29
Applicant: SONY CORP
Inventor： TERASAWA AKIHIKO , OGATA SEIICHI , SAITO TADASHI , SUGANO TAKASHI , TAKAHASHI SHINJI , URAI AKIRA , MURAKAMI AKIRA , KOBAYASHI TOMIO
IPC: G11B5/127
Abstract: PURPOSE:To prevent the peeling of magnetic metallic films and to enhance reliability by fusing the glass for joining substrates facing each other at the glass thickness varying partially. CONSTITUTION:The magnetic metallic films 2 are fused and formed on at least one of the substrates 3 and 4. These substrates 3 and 4 hold these magnetic metallic films 3 and are joined by the glass 5. The substrates 3 and 4 consist of core half bodies 1A and 1B. These cores 1A and 1B are so joined as to form a working magnetic gap g between the end faces of the magnetic metallic films 2 by disposing these end faces opposite to each other. The joint of the glass 5 is formed between the substrates 3 and 4 over the entire surface thereof and at partly different thicknesses. At least a part of the glass layer is penetrated and packed to the substrates 3 and 4 by the capillarity after the superposition of the substrates. As a result, the two substrates are securely joined and the generation of a spacing therebetween is obviated. The fluctuations in the recording and reproducing characteristics and frequency characteristics of the magnetic head and the generation of defective products are prevented and the reliability is improved.
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Patent Agency Ranking
公开(公告)号：JP2008181598A
公开(公告)日：2008-08-07
申请号：JP2007014425
申请日：2007-01-25
Inventor： SAITO TADASHI , NISHIUCHI SADAYUKI , MATSUNAGA TORU
Abstract: PROBLEM TO BE SOLVED: To provide a magnetic head capable of performing a satisfied DC erasing and a servo signal recording, as a magnetic head used for a magnetic recording medium having a data signal recording section and a servo signal recording section on a magnetic layer. SOLUTION: A DC erasing magnetic head Ha which has a metallic magnetic film 4a and a gap section 4c formed on a surface of a core hemi-body 5a and performs the DC erasing to the servo signal recording section, and a servo signal recording magnetic head Hb which has a metallic magnetic layer film 4b and a gap 4d formed on a surface of a core hemi-body 5b and records the servo signal on a signal recording area of the servo signal recording section by a magnetic field in the direction opposite to the DC erasing, are integrated through non-magnetic materials 7a, 7b, so that formation surfaces of the metallic magnetic films 4a, 4b are formed in the same planer shape. COPYRIGHT: (C)2008,JPO&INPIT
Abstract translation: 要解决的问题：为了提供一种能够执行满足的直流擦除和伺服信号记录的磁头，作为用于具有数据信号记录部分和伺服信号记录部分的磁记录介质的磁头 磁性层。 解决方案：具有形成在芯半体5a的表面上并且对伺服信号记录部进行直流擦除的金属磁性膜4a和间隙部分4c的直流擦除磁头Ha和伺服信号 记录磁头Hb，其具有形成在芯半体5b的表面上的金属磁性层膜4b和间隙4d，并将该伺服信号通过磁场方向记录在伺服信号记录部分的信号记录区域上 通过非磁性材料7a，7b将与DC擦除相对的方式集成，使得金属磁性膜4a，4b的形成表面以相同的平面形状形成。 版权所有（C）2008，JPO＆INPIT
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公开(公告)号：JP2003036505A
公开(公告)日：2003-02-07
申请号：JP2001225158
申请日：2001-07-25
Inventor： TAKASAKI HIROAKI , FUTAGAMI SHINTARO , SAITO TADASHI
Abstract: PROBLEM TO BE SOLVED: To provide a highly reliable magnetic head that can suppress burrs at the connecting terminals with no steps between the core halves and the connecting terminals not peeling in the reliability test after manufactured.
SOLUTION: A magnetic head has a pair of core halves, a support 110 having a surface to attach the pair of core halves, terminals 111, 112 on the support, and connectors on the cores to connect to the terminals. The magnetic head 100 of this invention is featured in that its connectors 161, 162 project from one 130 of the core halves 131, 140 at the side 131 not parallel to the support surface 110a for the core half 130, and those connectors have the surfaces 161a, 162a parallel to the support surface with insulators 143 in between to avoid short-circuiting.
COPYRIGHT: (C)2003,JPOAbstract translation: 要解决的问题：提供一种高可靠性的磁头，其能够在制造后的可靠性试验中抑制半导体与连接端子之间没有台阶的连接端子的毛刺。 解决方案：磁头具有一对芯半部，支撑件110具有将一对芯半部连接的表面，支撑件上的端子111,112以及芯上的连接器以连接到端子。 本发明的磁头100的特征在于，其连接器161,162从不与平行于芯半部130的支撑表面110a的侧面131处的芯半部131,140中的一个130突出，并且那些连接器具有表面 161a，162a平行于支撑表面，其间具有绝缘体143，以避免短路。
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公开(公告)号：JP2001338682A
公开(公告)日：2001-12-07
申请号：JP2000157054
申请日：2000-05-26
Applicant: SONY CORP , NIPPON CHEMICAL IND
Inventor： SAM FUI , NARITA YUKIO , SAITO TADASHI , OHARA NOBUHIKO , WAKUI ATSUSHI , KAMATA TOMOHISA
IPC: C01B31/02 , H01M4/02 , H01M4/36 , H01M10/05 , H01M10/0525 , H01M10/0567 , H01M10/0569 , H01M10/40 , H01M4/58
Abstract: PROBLEM TO BE SOLVED: To provide a nonaqueous electrolyte cell preventing vaporization and decomposition of the electrolyte based on an organic solvent at wide range of temperature, with high safety at short circuit, excellent cell performance like cycle property, and excellent high temperature property. SOLUTION: The nonaqueous electrolyte cell comprises a positive pole, a negative pole capable of occluding and releasing lithium ion, and a nonaqueous electrolyte including lithium ion. The nonaqueous electrolyte is the liquid containing lithium salt and phosphagen derivative shown by the formula; (R1O)3P =N-SO2-R2 [where; R1 represents an alkyl group of 1-10 carbons which may be replaced by halogen atom, or represents the formula; CH3-(OCH2CH2)n-(n is an integer of 1-5) which may be replaced by halogen atom, and R2 represents alkyl group of 1-12 carbons which may be replaced by halogen atom, or phenyl group which may be replaced by halogen atom, alkoxyl group, or alkyl group of 1-4 carbons].
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公开(公告)号：JP2001023111A
公开(公告)日：2001-01-26
申请号：JP18815199
申请日：1999-07-01
Applicant: SONY CORP
Inventor： SAITO TADASHI , OGATA SEIICHI , TAKAHASHI SHINJI
Abstract: PROBLEM TO BE SOLVED: To obtain a magnetic head in which the half bodys of magnetic cores can be securely connected to each other without breakage of the half-core. SOLUTION: In the magnetic head, a pair of the half bodys of magnetic cores (3) and (4) comprising nonmagnetic substrates 11 and magnetic metal layers 13 formed on the substrates 11 near the surfaces rubbing against a recording medium are connected to each other to form a magnetic gap (g) with the magnetic metal layers 13, and a magnetic path is composed of a thin film coil formed on the connection surface of at least one of the half bodys of magnetic cores (3) and (4). The widths of each nonmagnetic substrate 11 and metal magnetic layer 13 which are exposed on the connection surface are less than 90 μm.
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公开(公告)号：JP2000076613A
公开(公告)日：2000-03-14
申请号：JP24754698
申请日：1998-09-01
Inventor： OGATA SEIICHI , SAITO TADASHI , SATO MICHIYO
IPC: G11B5/17
Abstract: PROBLEM TO BE SOLVED: To make a magnetic head easily mountable on a magnetic recording and reproducing device.
SOLUTION: A head tip 2 with a front gap formed is glued with an adhesive 50 to the head tip attaching part 41 of a head base 3, on which a terminal plate 42 having a base material 42a formed with a glass epoxy resin is provided. An external connecting terminal facing the side of the head tip 2 is connected to the head tip connecting terminal 44a of the terminal plate 42 by means of wire bonding using a connecting material 51. The connection part connected with this material 51 is protected by applying a protective resin 52 to the part.
COPYRIGHT: (C)2000,JPOAbstract translation: 要解决的问题：使磁头容易安装在磁记录和再现装置上。 解决方案：具有形成前部间隙的头部尖端2用粘合剂50粘合到头部基座3的头部安装部分41上，在其上设有具有形成有玻璃环氧树脂的基底材料42a的端子板42。 通过使用连接材料51的引线接合将面对头部2侧的外部连接端子连接到端子板42的头端连接端子44a。与该材料51连接的连接部件通过施加 保护树脂52。
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