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41. 发明专利

JP2002100001A PERPENDICULAR RECORDING HEAD AND PERPENDICULAR RECORDING MAGNETIC DISK DEVICE 失效
公开(公告)号：JP2002100001A
公开(公告)日：2002-04-05
申请号：JP2000291295
申请日：2000-09-25
申请人： TOSHIBA CORP , TDK CORP
发明人： TAGUCHI TOMOKO , ROPPONGI TETSUYA , HORINOUCHI SHINICHI , MORITA HARUYUKI , MATSUZAKI MIKIO
IPC分类号： G11B5/667 , G11B5/00 , G11B5/012 , G11B5/127 , G11B5/187 , G11B5/265 , G11B5/31 , G11B5/65
摘要： PROBLEM TO BE SOLVED: To provide a perpendicular recording magnetic disk device capable of overwriting with a satisfactory S/N ratio even though the track width is narrowed to increase track density. SOLUTION: This perpendicular recording magnetic disk device is furnished with a magnetic disk (10) having a perpendicular two-layer film, and the perpendicular recording head having a leading magnetic pole (3) and a trailing magnetic pole (4) arranged by keeping a gap between them and an exciting coil (5) and constituting the part of the trailing magnetic pole confronted with a medium by a front magnetic pole (4a) and a rear magnetic pole (4b). Then, the length P of the trailing magnetic pole (4) along the head running direction is longer than the length T in the direction of track width, and the length P of the trailing magnetic pole (4) along the head running direction is longer than the gap length g1, and the saturated magnetic flux density of the rear magnetic pole (4b) is higher than the saturated magnetic flux density of the front magnetic pole (4a), and the length P1 of the rear magnetic pole (4b) along the head running direction is shorter than the length P2 of the front magnetic pole (4a) along the head running direction.

42. 发明专利

JP2001023129A MAGNETIC HEAD AND MAGNETIC RECORDING APPARATUS 失效
公开(公告)号：JP2001023129A
公开(公告)日：2001-01-26
申请号：JP19037599
申请日：1999-07-05
申请人： TDK CORP
发明人： SATO KEIICHI , ROPPONGI TETSUYA , NOMURA IZUMI
IPC分类号： G11B5/31 , G11B5/39
摘要： PROBLEM TO BE SOLVED: To obtain a recording and reproduction integrated type magnetic head which realizes a high recording density by reducing the deviation of a recording element and a reproducing element, and obtain a magnetic recording apparatus which improves the reliability on a spin valve type MR element and a tunnel MR element. SOLUTION: In the composite type recording/reproducing magnetic head, a reproducing element is arranged between a first magnetic pole and a second magnetic pole of a recording element. Alternatively, the reproducing element is set on the outflow side of the second magnetic pole, and a free layer is disposed on the second magnetic pole side. The recording element and reproducing element are made close to each other. The deviation of a record and a reproduction positions can be reduced. A part of a medium is formed of a magnetic material of a high coercive force resistive to effects of an external magnetic field or a magnetic field from the recording element. The material is magnetized beforehand, thereby, a spin valve type MR element of the reproducing element or a pinning layer of a tunnel MR element is magnetized by a magnetic field generated from the high coercive force magnetic material. A reliability on the reproducing element is accordingly improved.

43. 发明专利

JPH11273288A Magnetic head supporting mechanism and magnetic disk device 失效
标题翻译：磁头支持机构和磁盘设备
公开(公告)号：JPH11273288A
公开(公告)日：1999-10-08
申请号：JP9285098
申请日：1998-03-20
申请人： Tdk Corp , ティーディーケイ株式会社
发明人： SATO TOSHITAKE , ROPPONGI TETSUYA , WADA TAKESHI
IPC分类号： G11B21/21
摘要： PROBLEM TO BE SOLVED: To provide a magnetic head supporting mechanism capable of remarkably attenuating the jumping oscillation, and to provide a magnetic disk device using the mechanism.
SOLUTION: This magnetic head supporting mechanism provided with a load beam 11, a flexure 12 integrally or connectedly provided at a tip of this load beam 11 and a magnetic head slider 13 fixed to this flexure 12 has such a feature that the flexure 12 is fixed on the upper surface of the magnetic head slider 13 between the air flowing out end and the position of the centroid.
COPYRIGHT: (C)1999,JPO
摘要翻译：要解决的问题：提供一种能够显着地衰减跳跃振动的磁头支撑机构，并提供使用该机构的磁盘装置。解决方案：该磁头支撑机构设置有负载梁11，一体地或连接地设置在该负载梁11的前端处的挠曲部12和固定到该挠曲部12上的磁头滑块13具有挠曲部12固定的特征在空气流出端与质心位置之间的磁头滑块13的上表面上。

44. 发明专利

JP2002279607A THIN-FILM MAGNETIC HEAD AND ITS MANUFACTURING METHOD 失效
公开(公告)号：JP2002279607A
公开(公告)日：2002-09-27
申请号：JP2001081643
申请日：2001-03-21
申请人： TDK CORP
发明人： SATO KEIICHI , ROPPONGI TETSUYA , NORITSUKE YASUYUKI
IPC分类号： G11B5/31 , G11B5/39 , H01L43/08
摘要： PROBLEM TO BE SOLVED: To increase a magnetic field perpendicular to the surface of a recording medium, which is generated from a magnetic pole part, and to enhance a recoding density. SOLUTION: The thin-film magnetic head is provided with first and second magnetic layers 8 and 14, a gap layer 9 disposed between the first and second magnetic layers 8 and 14, and a thin-film coil 10 partially disposed between the first and second magnetic layers 8 and 14. The second magnetic layer 14 has a magnetic pole part layer 14A, a yoke part layer 14B and a connection part 14C. The yoke part layer 14B is magnetically connected to the rear end surface of the magnetic pole part layer 14A and both side faces there in a width direction. The rear end surface of the magnetic pole part layer 14A, and both side faces thereof in the width direction are inclined in a direction perpendicular to the surface of the gap layer 9 side of the magnetic pole part layer 14A.

45. 发明专利

JP2002208114A THIN FILM MAGNETIC HEAD AND MANUFACTURING METHOD THEREFOR 审中-公开
公开(公告)号：JP2002208114A
公开(公告)日：2002-07-26
申请号：JP2001337422
申请日：2001-11-02
申请人： TDK CORP
发明人： SATO KEIICHI , WATABE YUICHI , ROPPONGI TETSUYA
IPC分类号： G11B5/31 , G11B5/39 , H01L43/08
摘要： PROBLEM TO BE SOLVED: To enhance the magnetic field in the direction perpendicular to the surface of a recording medium, generated from a magnetic pole part and to shorten the magnetic path length to enhance high frequency characteristics in a thin film magnetic head. SOLUTION: A thin film magnetic head is provided with a first and a second magnetic layers 8 and 14 each including a magnetic pole part and magnetically connected with each other at a position apart from a medium facing surface ABS, a gap layer 9 provided between the magnetic layers 8 and 14 and a thin film coil 10, a part of which is provided between the magnetic layers 8 and 14. The second magnetic layer 14 has a magnetic pole part layer 14A and a yoke part layer 14B. The saturated magnetic flux density of the magnetic pole part layer 14A is higher than the saturated magnetic flux density of the yoke part layer 14B. The yoke part layer 14B comprises a first layer 14B1 coming in contact with the surfaces on the gap layer 9 side of the first magnetic layer 8 and the magnetic pole part layer 14A and a second layer 14B2 coming into contact with the first layer 14B1 and both side surfaces of the rear end surface and the width direction of the magnetic pole part layer 14A.

46. 发明专利

JP2002208113A THIN FILM MAGNETIC HEAD AND MANUFACTURING METHOD THEREFOR 审中-公开
公开(公告)号：JP2002208113A
公开(公告)日：2002-07-26
申请号：JP2001337421
申请日：2001-11-02
申请人： TDK CORP
发明人： SATO KEIICHI , ROPPONGI TETSUYA , WATABE YUICHI
IPC分类号： G11B5/31 , G11B5/39 , H01L43/08
摘要： PROBLEM TO BE SOLVED: To enhance the magnetic field in the direction perpendicular to the surface of a recording medium, generated from a magnetic pole part, and to shorten the magnetic path length to enhance high frequency characteristics in a thin film magnetic head. SOLUTION: A thin film magnetic head is provided with a first and a second magnetic layers 8 and 14, a gap layer 9 provided between the first and the second magnetic layers 8 and 14, a connecting part 12 magnetically connecting the first and the second magnetic layers 8 and 14 to each other at a position apart from a medium facing surface ABS and a thin film coil 10, apart of which is provided between the first and the second magnetic layers 8 and 14. The second magnetic layer 14 has a magnetic pole part layer 14A and a yoke part layer 14B. The saturated magnetic flux density of the magnetic pole part layer 14A is higher than the saturated magnetic flux density of the yoke part layer 14B. The yoke part layer 14B magnetically connects the upper end part of the connecting part 12 with the rear end surface of the magnetic pole part layer 14A.

47. 发明专利

JP2002208112A THIN FILM MAGNETIC HEAD AND MANUFACTURING METHOD THEREFOR 失效
公开(公告)号：JP2002208112A
公开(公告)日：2002-07-26
申请号：JP2001156059
申请日：2001-05-24
申请人： TDK CORP
发明人： NORITSUKE YASUYUKI , SATO KEIICHI , ROPPONGI TETSUYA
IPC分类号： G11B5/31
摘要： PROBLEM TO BE SOLVED: To enhance the magnetic field in the direction perpendicular to the surface of a recording medium, generated from a magnetic pole part. SOLUTION: A thin film magnetic head is provided with a first magnetic layer 8 and a second magnetic layer 14 (14A, 14B), a gap layers (9A-9C) provided between the first magnetic layer 8 and the second magnetic layer and a thin film coil 10, a part of which is provided between the first magnetic layer 8 and the second magnetic layer. The second magnetic layer 14 has a magnetic pole part layer 14A and a yoke part layer 14B. The yoke part layer 14B is magnetically connected with the both side surfaces in the width direction of the magnetic pole part layer 14A. In the section parallel to a medium facing surface and intersecting the part where the magnetic pole part layer 14A and the yoke part layer 14B are magnetically connected with each other, at least a part of the end part on the gap layer side of the yoke part layer 14B is disposed in the position nearer to the first magnetic layer 8 than the position of the end part on the gap layer side of the magnetic pole part layer 14A.

48. 发明专利

JP2002208111A THIN FILM MAGNETIC HEAD AND MANUFACTURING METHOD THEREFOR 失效
公开(公告)号：JP2002208111A
公开(公告)日：2002-07-26
申请号：JP2001081644
申请日：2001-03-21
申请人： TDK CORP
发明人： SATO KEIICHI , ROPPONGI TETSUYA
IPC分类号： G11B5/31 , G11B5/39
摘要： PROBLEM TO BE SOLVED: To provide a thin film magnetic head wherein the magnetic field in the direction perpendicular to the surface of a recording medium, generated from a magnetic pole part, can be enhanced and recording density can be enhanced. SOLUTION: The thin film magnetic head is provided with a first and a second magnetic layers 8 and 14, a gap layer 9 provided between the first and the second magnetic layers 8 and 14 and a thin film coil 10, a part of which is provided between the first and the second magnetic layers 8 and 14. The second magnetic layer 14 has a magnetic pole part layer 14A, a yoke part layer 14B and a connection part 14C. The head is provided with a non-magnetic layer 15 provided on the side opposite to the gap layer 9 of the magnetic pole part layer 14A. The yoke part layer 14B is connected with the rear end surface of the magnetic pole part layer 14A and in the section including the connecting surface, the thickness of the yoke part layer 14B is thicker than the thickness of the magnetic pole part layer 14A.

49. 发明专利

JP2002100007A PERPENDICULAR RECORDING HEAD AND PERPENDICULAR MAGNETIC RECORDER 失效
公开(公告)号：JP2002100007A
公开(公告)日：2002-04-05
申请号：JP2000291296
申请日：2000-09-25
申请人： TOSHIBA CORP , TDK CORP
发明人： TAKEO AKIHIKO , ROPPONGI TETSUYA , HORINOUCHI SHINICHI , MORITA HARUYUKI , MATSUZAKI MIKIO
IPC分类号： G11B5/667 , G11B5/00 , G11B5/127 , G11B5/23 , G11B5/31 , G11B5/64 , G11B5/65 , G11B5/66
摘要： PROBLEM TO BE SOLVED: To provide a perpendicular magnetic recorder capable of suppressing the adverse effect to adjacent tracks at the time of recording operation when a perpendicular magnetic recording is performed to a perpendicular two-layer film medium. SOLUTION: This perpendicular magnetic recorder is furnished with the perpendicular two-layer film medium laminating a soft magnetic backing layer (22) and a perpendicular recording layer (23), and the perpendicular recording head provided with a recording main magnetic pole (36) and an auxiliary magnetic pole (35) arranged keeping a gap between them and an exciting coil (37), then the length of the gap between the recording main magnetic pole (36) and the auxiliary magnetic pole (35) is set to five times of or shorter than the guard band width between recording tracks formed in the perpendicular two-layer film medium.

50. 发明专利

JP2002074654A METHOD FOR MANUFACTURING FUNCTIONAL ELEMENT AND FUNCTIONAL ELEMENT 失效
公开(公告)号：JP2002074654A
公开(公告)日：2002-03-15
申请号：JP2000252841
申请日：2000-08-23
申请人： TDK CORP
发明人： SATO KEIICHI , ROPPONGI TETSUYA , NAKAGAWA JUN , YOSHIMOTO MAMORU
IPC分类号： G11B5/65 , G11B5/31 , G11B5/39 , G11B5/64 , G11B5/73 , G11B5/855 , H01F10/20 , H01F10/26 , H01F41/34 , H01L43/08 , H01L43/12
摘要： PROBLEM TO BE SOLVED: To obtain high recording density by forming extremely minute isolated magnetic bodies having an almost identical form and to decrease variance in the characteristics of the isolated magnetic bodies in a patterned medium in which minute magnetic bodies each isolated from others form the recording pits, and to provide a functional element having functional bodies in an extremely minute and almost identical form same as the above isolated magnetic bodies. SOLUTION: In the method for manufacturing a functional element having at least one isolated functional body consisting of a functional material on a single crystal substrate, the method includes a process of forming a linear functional body and a process of removing a part of the linear functional body to reduce the major axial direction of the linear functional body to form the isolated functional body.

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