专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明专利

JP2003141840A MAGNETIC DISK DEVICE PROVIDED WITH FLOATING MAGNETIC HEAD 审中-公开
公开(公告)号：JP2003141840A
公开(公告)日：2003-05-16
申请号：JP2002252338
申请日：2002-08-30
申请人： HITACHI LTD
发明人： MAEDA NAOKI , NAKAMURA SHIGEO , TAKAHASHI KENJI , AGARI KOJI , MASUKAWA TETSUO , SHIMIZU TOSHIHIKO
IPC分类号： G11B21/21
摘要： PROBLEM TO BE SOLVED: To reduce the dispersion of a floating quantity by uniformizing the thickness of adhesives for adhering a gimbal and a slider in a magnetic disk device provided with floating magnetic head. SOLUTION: A projection 41 is formed on the surface of a gimbal 40 facing the slider of a magnetic head. Between these slider and gimbal 40, setting resins are interposed as adhesives and the slider and the gimbal 40 are little pressed and adhered. At such a time, by controlling the pressure between the slider and the gimbal 40, the thickness of setting resins between the slider and the gimbal 40 can be uniformized by the projection 41.

2. 发明专利

JPH06325530A SLIDER, TRANSDUCER SUPPORT AND MAGNETIC MEMORY 失效
公开(公告)号：JPH06325530A
公开(公告)日：1994-11-25
申请号：JP11559493
申请日：1993-05-18
申请人： HITACHI LTD
发明人： TAKEUCHI YOSHINORI , KODAIRA HIDEKAZU , TOKUYAMA MIKIO , TOKISUE HIROMITSU , MAEDA NAOKI , AGARI KOJI , NAKAMURA SHIGEO
IPC分类号： G11B21/21
摘要： PURPOSE:To possible a slider in which the floating amount is limited stably by providing a surface having a specific level difference at the gas inlet end on the gas bearing surface of the slider. CONSTITUTION:A slider 12 is floated by the pressure of gas flowing between the gas bearing surface 13 and a rotating memory medium. The gas bearing surface 13 is formed out of a surface 14 having a level difference 16 with respect to the surface 13 and the remaining surface part (face) 15 of the surface 13 for generating positive pressure. The gas flow intrudes onto the surface 14 of the slide 12 to cause pressure rise, but the pressure decreases as the velocity of gas flow increases. Furthermore, the gas flow intruded through the level difference part 16 onto the surface 15 causes continuous pressure increase regardless of the velocity thereof. On the other hand, the gas flow applied the slider 12 with a load increasing with the velocity thus restraining the slider 12 from floating. The pressure and the load are related to the level difference at the part 16 and when the level difference between the surfaces 14, 15 is set at 700nm or less, a slider having stably limited floating amount can be obtained.

3. 发明专利

JPH06215516A MAGNETIC HEAD SLIDER AND MAGNETIC STORAGE DEVICE 失效
公开(公告)号：JPH06215516A
公开(公告)日：1994-08-05
申请号：JP642093
申请日：1993-01-19
申请人： HITACHI LTD
发明人： MATSUMOTO MASAAKI , TAKEUCHI YOSHINORI , SAITO SUKEO , AGARI KOJI , KOJIMA YASUO , TAKAHASHI HARUHIDE , SHIROISHI YOSHIHIRO
IPC分类号： G11B5/39 , G11B21/21
摘要： PURPOSE:To make the floating amount of a head constant and stable and to improve the recording density by forming the front edge part of a positive pressure generating rail into roughly the wedge shape so that the width of the rail becomes narrower as it goes to the front edge. CONSTITUTION:The center rail 1 is formed to the constricted shape in the width direction at the center part in the longitudinal direction, and a magnetic head 7 is mounted thereon at the rear end. A side rail 2 is formed to the shape so that the sides facing to the rail 1 are contracted in the width direction at the center parts in the longitudinal direction. The rail 1 having such a shape makes the floating amount of the position of magnetic head hard to be affected by the variation of the floating amount in the roll direction, and the decrease of the floating amount at the time when a yaw angle is effected is lessened. The floating amount of the head is made constant and stable accordingly.

4. 发明专利

JPH04195716A MAGNETIC RECORDING MEDIUM 失效
公开(公告)号：JPH04195716A
公开(公告)日：1992-07-15
申请号：JP32189990
申请日：1990-11-26
申请人： HITACHI LTD
发明人： AGARI KOJI , YASHIKI HIROSHI , KATO YOSHIKI
IPC分类号： G11B5/84 , G11B5/64 , G11B5/65 , G11B5/66 , G11B5/73 , G11B5/738
摘要： PURPOSE:To facilitate a high recording density by a method wherein a magnetic layer is formed on substrate with a modified layer having a center line average roughness not larger than 4nm therebetween and the magnetic layer has magnetic anisotropy. CONSTITUTION:A magnetic layer is formed on a substrate with a modified layer having a center line average surface roughness not larger than 4nm therebetween and the magnetic layer has magnetic anisotropy. In an ordinary magnetic disc, a substrate plating film, a foundation layer, a magnetic film and a protective film are built up on the substrate. In such a magnetic disc, the modified layer may be provided on any one of the substrate, the substrate plating film and the foundation layer. The crystal orientation and/or the crystal grain size of the magnetic film are/is controlled by the modified layer. With this constitution, magnetic recording characteristics along the recording direction of the magnetic film, along the circumferential direction in the case of the magnetic disc, can be improved.

5. 发明专利

JP2004164702A Magnetic disk drive 审中-公开
标题翻译：磁盘驱动器
公开(公告)号：JP2004164702A
公开(公告)日：2004-06-10
申请号：JP2002326261
申请日：2002-11-11
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： AGARI KOJI
IPC分类号： G11B21/26 , G11B21/21 , G11B21/22
摘要： PROBLEM TO BE SOLVED: To reduce a manufacturing cost by making a magnetic head slider mounted on a magnetic disk drive exchangeable by a jig arm from the outside of a casing. SOLUTION: An opening part wherein the jig arm can be inserted, is arranged on the side of a casing of the magnetic disk drive, and a guide groove for positioning a tip of the jig arm to the position of the magnetic head slider is arranged around an unload mechanism. When the trouble or the deterioration of performance are caused in the magnetic head slider, the recording information of a medium is reproducible by exchanging the slider. Then, the reliability as the device is improved. Also, the slider is easily exchangeable, and the performance test for a single component of a magnetic head can be omitted, then the reduction of the manufacturing cost is attained. COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题：通过使安装在磁盘驱动器上的磁头滑动器能够通过夹具臂从壳体的外部更换来降低制造成本。解决方案：其中可以插入夹具臂的开口部分布置在磁盘驱动器的壳体的侧面上，以及用于将夹具臂的尖端定位到磁头滑块的位置的引导槽围绕卸载机构布置。当在磁头滑块中引起故障或性能下降时，介质的记录信息可以通过更换滑块来重现。然后，提高了设备的可靠性。此外，滑块易于更换，并且可以省略对磁头的单个部件的性能测试，然后实现制造成本的降低。版权所有（C）2004，JPO

6. 发明专利

JPH07254248A MAGNETIC HEAD SLIDER 失效
公开(公告)号：JPH07254248A
公开(公告)日：1995-10-03
申请号：JP4411494
申请日：1994-03-15
申请人： HITACHI LTD
发明人： AGARI KOJI , NAKAZAWA MANAMI , MIYAZAWA YOSHIHIKO
IPC分类号： G11B21/21
摘要： PURPOSE:To obtain a magnetic head slider for a magnetic disc apparatus with which a cohesion when a disc is at rest and a friction when the disc is rubbed with a low speed are suppressed at low levels and stabilize a floating height when the head is made to float. CONSTITUTION:An electromagnetic transducer 7 is formed on the flow-out end 3 of a slider 1 and spherical protrusions 5a-5e are provided on the front part and the rear part of the flat surface 4 on the floating surface 2 side of the slider 1 bilateral-symmetrically. A pressure distribution in an air-flow direction (x) is such that a pressure rises sharply with a distance from the flow-out end 6 of the slider 1 to reach its peak near the crest planes 50c and 50d of the protrusions 5c and 5d and, after it falls sharply, reaches its peak again near the crest planes 50a and 50b of the protrusions 5a and 5b. A floating height is stabilized by this pressure distribution. When a disc is at rest or rubbed with a low speed, the slider 1 is supported above the disc surface by the small circular crest planes 50a-50e. Therefore, the cohesion and the friction can be suppressed.

7. 发明专利

JPH06333354A FLOATING HEAD SLIDER UTILIZING NEGATIVE PRESSURE AND ROTARY DISK MEMORY DEVICE 失效
公开(公告)号：JPH06333354A
公开(公告)日：1994-12-02
申请号：JP11696493
申请日：1993-05-19
申请人： HITACHI LTD
发明人： TAKEUCHI YOSHINORI , TOKUYAMA MIKIO , TOKISUE HIROMITSU , KODAIRA HIDEKAZU , AGARI KOJI , MATSUMOTO MASAAKI
IPC分类号： G11B21/21
摘要： PURPOSE:To maintain nearly the specified flying height of the slider in the radial direction of a reading medium, thereby averting the adhesion of dust on an inflow side bearing surface and suppressing the fluctuation in the flying height with the external disturbance at the time of seeking. CONSTITUTION:This floating head slider has a pair of side rails 15, a cross rail 18 disposed on the inflow side of a center rail 20 mounted with a transducer 11 and inverted step-shaped recessed parts 19 enclosed by these rails. Side rails 15 are provided with constricted parts 21 nearer the inflow side from the center and have a shape which increases in the floating surface width toward the outflow side and does not arrive at the outflow end. The cross rail 18 arrives at the inflow end and is formed of nearly the same plane. Tapered parts are abolished. Both sides of the inflow end may be provided with the second recessed parts. As a result, the positive pressure of the side rails is reduced, the speed characteristic for floating is thus maintained nearly constant even if the negative pressure is decreased by the miniaturization of the slider.

8. 发明专利

JP2002184148A SLIDER AND ROTARY DISK STORAGE DEVICE 审中-公开
公开(公告)号：JP2002184148A
公开(公告)日：2002-06-28
申请号：JP2001338878
申请日：2001-11-05
申请人： HITACHI LTD
发明人： TAKEUCHI YOSHINORI , KODAIRA HIDEKAZU , TOKUYAMA MIKIO , TOKISUE HIROMITSU , MAEDA NAOKI , AGARI KOJI , NAKAMURA SHIGEO
IPC分类号： G11B5/60 , G11B21/21
摘要： PROBLEM TO BE SOLVED: To stabilize and narrow down floating quantity of a slider by making it approximately constant at an optional radius position of a storage medium without depending on a driving means of linear, rotary, etc. SOLUTION: In the slider having a gas bearing surface to float the slider 12 on the storage medium by positive pressure to be generated by gas flow in accordance with rotation of the storage medium, the slider 12 secures pitch rigidity and improves speed characteristics in the case of floating by constituting three gas bearing rails independently provided at a distance from a surface 36 due to a step, of plane parts 15 and 37 on the gas bearing surface and providing a surface 14 where the step from the plane parts becomes

9. 发明专利

JPH11339416A RECORDING APPARATUS 失效
公开(公告)号：JPH11339416A
公开(公告)日：1999-12-10
申请号：JP14559098
申请日：1998-05-27
申请人： HITACHI LTD
发明人： AGARI KOJI , OGAWA NAOKI , ISONO CHIHIRO , TOKUYAMA MIKIO , KATO YUKIO
IPC分类号： G11B21/21
摘要： PROBLEM TO BE SOLVED: To provide a recording apparatus which has improved reliability for shock resistance. SOLUTION: In this recording apparatus, a projected area 12 which is in the same plane as a flat area 1 of a fluid bearing surface and as a tapered area 2 in its surface and is smaller than the area of the flat area 1 and tapered area 2 is provided at the surface opposing to the medium of the slider of the recording head assembly with isolation from the fluid bearing surface and the chamfered areas 9, 9' are also provided in this projected area 12. The projected area 12 may be provided on any side of the incoming and outgoing side of the slider or in both sides thereof.

10. 发明专利

JPH10149646A MAGNETIC HEAD ASSEMBLY AND MAGNETIC DISK DEVICE 失效
公开(公告)号：JPH10149646A
公开(公告)日：1998-06-02
申请号：JP30663496
申请日：1996-11-18
申请人： HITACHI LTD
发明人： AGARI KOJI , TAKEUCHI YOSHINORI , MAEDA NAOKI
IPC分类号： G11B21/21
摘要： PROBLEM TO BE SOLVED: To provide a magnetic head assembly capable of resisting large shearing and peeling forces by an adhesive force with a small contact area and highly accurately attaching a magnetic head slider to a gimbal. SOLUTION: In a magnetic head assembly including a magnetic head slider 3 having a magnetic core and a gimbal 2 for elastically supporting the slider 3, a step having a projecting part 60 is provided in the backside of the magnetic head slider 3 opposite a magnetic disk, a hole part 210 engaged with the projecting part 60 is provided in the supporting part 21 of the gimbal 2 and, by engaging and fixing the projecting part 60 to the hole part 210, the magnetic head slider 3 is attached by being stuck to the gimbal 2.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式