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公开(公告)号：JP2006134540A
公开(公告)日：2006-05-25
申请号：JP2004325489
申请日：2004-11-09
Applicant: Akita Prefecture , 秋田県
Inventor： TAKAHASHI SHINGO , YAMAKAWA KIYOSHI , OUCHI KAZUHIRO
IPC: G11B5/31
CPC classification number: G11B5/1278 , G11B5/11 , G11B5/3116 , G11B5/3146 , G11B5/315 , G11B5/743 , G11B5/82
Abstract: PROBLEM TO BE SOLVED: To provide a magnetic head and a magnetic recording device capable of increasing recording density.
SOLUTION: The magnetic recording device has a single magnetic pole head 4 equipped with a side shield 2 and a two-layer film medium 6, and the magnetic recording device is characterized in that a distance PSS from the tip of a main magnetic pole 1 to the side shield 2 is equal to the difference between the pitch TP of the recording track of a recording layer 16 and a width TWW along the track width direction of the tip end face 11 of the main magnetic pole 1.
COPYRIGHT: (C)2006,JPO&NCIPIAbstract translation: 要解决的问题：提供能够提高记录密度的磁头和磁记录装置。 解决方案：磁记录装置具有装备有侧屏蔽2和双层膜介质6的单个磁极头4，并且该磁记录装置的特征在于距主磁体尖端的距离PSS 与侧面屏蔽2的极1相等于记录层16的记录轨道的间距TP与沿主磁极1的前端面11的轨道宽度方向的宽度TWW之间的差。 版权所有（C）2006，JPO＆NCIPI
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公开(公告)号：JP2002288806A
公开(公告)日：2002-10-04
申请号：JP2001087401
申请日：2001-03-26
Applicant: AKITA PREFECTURE
Inventor： TAKAHASHI SHINGO , YAMAKAWA KIYOSHI , OUCHI KAZUHIRO , NAKAMURA YOSHIHISA , MURAOKA HIROAKI
Abstract: PROBLEM TO BE SOLVED: To provide a single magnetic head for vertical magnetic recording with the shape of a main magnetic material capable of not only suppressing the decrease of a recording magnetic field at the time of a narrow track but also producing a magnetic field more than the equivalent of the saturation magnetic flux density of the main magnetic material. SOLUTION: A main magnetic pole point 3a is for example provided with the first point 1a deciding track width comprised of square column shape which is the cross section of square or trapezoid with limited height (length) and the second point 2a with which the size of cross-sectional area is longer and larger than the first point 1a in more than three directions of the four directions of the track width direction and the head running direction to comprise a single magnetic pole consisting of two steps to realize a single magnetic head 10 for vertical magnetic recording capable of obtaining more higher magnetic filed by performing as optimizing the shape of the main magnetic pole point side.
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公开(公告)号：JP2002008906A
公开(公告)日：2002-01-11
申请号：JP2000185306
申请日：2000-06-20
Applicant: ALPHA ELECTRONICS , AKITA PREFECTURE
Inventor： OUCHI KAZUHIRO , HONDA NAOKI , YAMAKAWA KIYOSHI , SATO MAKIO , OISHI AKIRA , SASAKI HIROSHI
Abstract: PROBLEM TO BE SOLVED: To improve a resistor provided with a resistive laminate, composed of a plurality of resistors laminated on the surface of an insulating board to be improved in long-term stability, by reducing its temperature coefficient of resistance TCR to zero over a wide range of temperature. SOLUTION: When the rote of change of a resistance with temperature [Δt] for eaching resistor layer of the resistive laminate is approximated by the quadratic formula, [αΔt+β(Δt)2], or the formula of higher order, at least the signs of the linear temperature coefficient α and quadratic temperature coefficient β of a certain resistor layer are set opposite to those of the other resistor layer. A resistor layer of superior long-term reliability, how ever, is used as the uppermost layer of the resistive laminate. At least, α and β may be both set positive for one of the resistor layers, and α and β be both set negative for the other of the resistor layers. At least, one of the resistor layers may be formed of Ni-Cr alloy.
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公开(公告)号：JP2001273627A
公开(公告)日：2001-10-05
申请号：JP2000086979
申请日：2000-03-27
Applicant: KYOCERA CORP , AKITA PREFECTURE
Inventor： NAKAYAMA MASAHITO , SUGAWARA MAKOTO , ARIMUNE HISAO , ARIAKE JUN , HONDA NAOKI , OUCHI KAZUHIRO
Abstract: PROBLEM TO BE SOLVED: To obtain a magnetic recording medium suppressing that the magnetic recording medium is affected by the crystal orientation of a substrate to easily have crystal anisotropy, having extremely reduced coercive force anisotropy and suitable for smoothly dealing with a trend toward the higher recording density, in the magnetic recording medium using a single crystal substrate. SOLUTION: The magnetic recording medium 8 is formed by successively laminating a growth control film 10, a seed layer 3, a base layer 4, a magnetic layer 5 consisting of a Co alloy layer having uniaxial crystal magnetic anisotropy and a non-magnetic protective layer 6 consisting of C, SiO and the like on the single crystal substrate 9.
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公开(公告)号：JP2001004728A
公开(公告)日：2001-01-12
申请号：JP24838799
申请日：1999-09-02
Applicant: MICRO MAGUNE KK , AKITA PREFECTURE
Inventor： MIURA YOSHINORI , YAMADA HIDETAKA , SHOJI SHINICHI , KITAGAWA YUTAKA , TAKAHASHI SHINGO , YAMAKAWA KIYOSHI , HONDA NAOKI , OUCHI KAZUHIRO
Abstract: PROBLEM TO BE SOLVED: To obtain a magnetism detecting apparatus by which information on magnetism can be read out with high sensitivity from a magnetic medium whose residual magnetism is faint by a method wherein a magnet is attached to the intrusion side of the magnetic medium at a thin filmy magnetic sensor in such a way that the direction of a magnetic pole is at right angles to the advance direction of the magnetic medium, a return magnetic path is formed between the magnet and the magnetic sensor and a magnetic flux leakage is reduced. SOLUTION: A thin filmy magnetic sensor 1 is attached, by using a soft magnetic material 6, to the surface of the horizontal part 7a of a support base 7 which is formed in an H-shape. In addition, a permanent magnet 13 is attached to the intrusion side of a sheetlike magnetic medium 8 in such a way that the direction of a magnetic pole is at right angles to the advance direction of the magnetic medium 8. The permanent magnet 13 is constituted integrally in such a way that a U-shaped yoke 14 is assembled by the soft magnetic material 6 and that a spacer 15 is installed between the yoke 14 and the vertical part 7b of the support base 7, it is magnetically shielded by excluding a plane on which the magnet 13 faces the magnetic medium 8 so that a magnetic flux which is leaked to the side of the magnetic sensor 1 is reduced. Then, when the magnetic medium 8 is moved in parallel so as to come close to the magnetic sensor 1, an external-signal magnetic field 12 from the magnetic medium 8 is detected by the magnetic sensor 1 in a noncontact manner.
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Patent Agency Ranking
公开(公告)号：JPH11353648A
公开(公告)日：1999-12-24
申请号：JP16231898
申请日：1998-06-10
Applicant: AKITA PREFECTURE
Inventor： SUZUKI YOSHIO , HONDA NAOKI , OUCHI KAZUHIRO
Abstract: PROBLEM TO BE SOLVED: To provide a producing method of a record medium having excellent storage stability of high density information recording, especially information by magnetic recording. SOLUTION: In the producing method of an information record medium in which information is recorded and reproduced by using a magnetic field or light, at least one base layer essentially comprising elements or compds. selected from Cr, Pt, Pd, Au, Fe, Ni, MgO and NiO is formed while the crystalline plane with (100) Miller index of the crystal lattice is controlled to be parallel to the substrate. Further, an L10 regular alloy layer is formed by sputtering under the conditions satisfying P×D>3000, wherein P is the Ar gas pressure (Pa) and D is the distance (mm) between the target and the substrate. This producing method of the record medium consisting of the regular alloy thin film above described is used for a glass substrate for an industrial hard disk. Thereby, the regularity necessary to develop large crystal magnetic anisotropy is promoted at a low temp. at which the glass substrate can be applied so that the recording storage stability of a record medium is improved.
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公开(公告)号：JP2005338007A
公开(公告)日：2005-12-08
申请号：JP2004160221
申请日：2004-05-28
Applicant: Akita Prefecture , 秋田県
Inventor： KUSUMI TAKAYUKI , YAMAKAWA KIYOSHI , SAITO KOJI , OUCHI KAZUHIRO
Abstract: PROBLEM TO BE SOLVED: To provide a trace mechanism capable of tracing surely a traced object without running out from an orbit given preliminarily, and a recording reproducing test device capable of scanning surely a medium by a probe without running out from an orbit given preliminarily.
SOLUTION: This recording reproducing test device 1 has a driving stage 2 for attaching a sample 10, a stage position detector 4 for detecting a position of the sample 10 by detecting a position of the driving stage 2, a drive unit 6 for moving the driving stage 2 omnidirectionally, a controller 8 for drive-controlling the drive unit 6, based on positional information of the sample 10, the probe 20 arranged to contact with the sample 10, and a reflection face 30 for reflecting a laser beam from a laser device 32 arranged fixedly to the probe 20. The controller 8 controls the drive unit 6, based on an optional orbit given preliminarily, monitors a posture of the probe 20 with respect to the sample 10, and conducts feedback control not to make an opposed portion between the both run out from the orbit.
COPYRIGHT: (C)2006,JPO&NCIPIAbstract translation: 要解决的问题：提供能够可靠地跟踪被跟踪的物体而不会从预先给出的轨道中耗尽的轨迹机构，以及能够通过探测器确保介质的扫描而不会从轨道跳出的记录再现测试装置 预先给予 解决方案：该记录再现测试装置1具有用于附接样品10的驱动级2，用于通过检测驱动级2的位置来检测样品10的位置的级位置检测器4，用于 基于样品10的位置信息，布置成与样品10接触的探针20和用于反射来自反射面30的激光束的反射面30，全方位地移动驱动台2，用于驱动控制驱动单元6的控制器8 激光装置32，其固定地布置在探头20上。控制器8基于预先给出的可选轨道来控制驱动单元6，监测探头20相对于样品10的姿势，并且进行不使 两者都从轨道跑出来。 版权所有（C）2006，JPO＆NCIPI
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公开(公告)号：JP2003141721A
公开(公告)日：2003-05-16
申请号：JP2001339696
申请日：2001-11-05
Applicant: AKITA PREFECTURE
Inventor： SUZUKI YOSHIO , OUCHI KAZUHIRO
Abstract: PROBLEM TO BE SOLVED: To provide a method of manufacturing a recording medium which has fine magnetic domain structures and realizes high reproduced output and low medium noise by proposing a technique of reducing the magnetic domain size of the information recording layer of a high-density magnetic recording medium, more particularly a two-layered perpendicular magnetic recording medium having an L10 type rule alloy in the information recording layer. SOLUTION: The method of manufacturing the two-layered perpendicular magnetic recording medium having a layer consisting of the L10 type ordered alloy selected from a group A as an information recording layer comprises making the layer which has the same composition as the composition of the L10 type ordered alloy and in which the crystalline structure is an irregular structure (S11) before making the L10 type ordered alloy layer (the information recording layer) by sputtering film formation. The group A includes an FePt ordered alloy, CoPt ordered alloy, FePd ordered alloy, and their alloys. The two-layered perpendicular magnetic recording medium having the fine magnetic domain structures can be made by this manufacturing method.
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公开(公告)号：JP2001250204A
公开(公告)日：2001-09-14
申请号：JP2000060293
申请日：2000-03-06
Applicant: AKITA PREFECTURE
Inventor： ISE KAZUYUKI , YAMAKAWA KIYOSHI , HONDA NAOKI , OUCHI KAZUHIRO , NAKAMURA YOSHIHISA , SUGITA KEN , MURAOKA HIROAKI
IPC: G11B5/31
Abstract: PROBLEM TO BE SOLVED: To provide a thin film signal magnetic pole magnetic recording head high in recording sensitivity and easy in production. SOLUTION: This thin film signal magnetic pole magnetic recording head is composed of a main pole thin film 5 of a soft magnetic thin film, thin film conductor coils 3 and 6, and a magnetic core (2 and 7) of prescribed soft magnetic materials, and has at least two or more sets of the loop-shaped spiral shape thin film conductor coil whose number of turns >=1 ternes. These thin film conductors coils 3 and 6 are disposed on both sides in the film thickness direction of the main pole thin film 5, and are formed so that two thin film conductor coils 3 and 6 disposed between the both sides in the film thickness direction of the main pole thin film 5 are connected or not connected to each other at one place by using the conventional technique. Consequently, the front end of the main pole film is excited, then the magnetic head excellent in recording sensitivity and hardly being affected by the external magnetic field is easily manufactured.
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公开(公告)号：JP2000182802A
公开(公告)日：2000-06-30
申请号：JP35149698
申请日：1998-12-10
Applicant: AKITA PREFECTURE , ALPHA ELECTRONICS
Inventor： OUCHI KAZUHIRO , HONDA NAOKI , YAMAKAWA KIYOSHI , SATO MAKIO , OISHI AKIRA , SASAKI HIROSHI
Abstract: PROBLEM TO BE SOLVED: To enable making temperature coefficient of resistance(TCR) approach zero over a wide temperature range. SOLUTION: A resistance member is formed of a Ni-Cr based alloy, which contains one or at least two elements selected from among a group of Al, Si, Be, Mg, Ti and Mn and one or at least two elements selected from among a group of Mn, Fe, Co, Ti and V. In a resistance material, resistance value change rate of base metal is approximated by a quadratic formula for the temperature change, a primary element contributing to a primary coefficient αand a secondary element contributing to a secondary coefficient β are found. Doping quantity of the primary element and the secondary element are so decided that the coefficients α, β fall within prescribed ranges.
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