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1. 发明专利

JP2009026367A Device and method for measuring flying height of magnetic head slider 审中-公开
标题翻译：用于测量磁头滑块飞行高度的装置和方法
公开(公告)号：JP2009026367A
公开(公告)日：2009-02-05
申请号：JP2007187203
申请日：2007-07-18
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： TSUCHIYAMA RYUJI
IPC分类号： G11B21/21 , G01B11/14
摘要： PROBLEM TO BE SOLVED: To provide a device and method for measuring a flying height of a magnetic head slider stably flying over a compact and transparent cylinder.
SOLUTION: A cylindrical hub 4 having a through hole 32 or a groove 32' is attached to the inside of a hollow quartz cylinder 3. The magnetic head slider 1 is arranged, facing the quartz cylinder 3. The hub 4 and the cylinder 3 are rotated by a motor 52. Light of a light source 63 is emitted from a side opposite to the magnetic head slider 1. The intensity of interference light from interference fringes produced by the light having passed through the through hole 32 or the groove 32' of the quartz cylinder 3 and the hub 4 on a floating surface of the magnetic head slider 1 is measured by an optical device 9. The flying height of the magnetic head slider 1 from the quartz cylinder 3 is obtained from the intensity of the interference light.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供一种用于测量稳定地在紧凑且透明的气缸上飞行的磁头滑块的飞行高度的装置和方法。解决方案：具有通孔32或槽32'的圆柱形轮毂4附接到中空石英缸3的内部。磁头滑块1布置成面向石英缸3.轮毂4和气缸3由电动机52旋转。光源63的光从与磁头滑块1相反的一侧发射。由穿过通孔32或凹槽的光产生的干涉条纹的干涉光的强度通过光学装置9测量石英圆筒3的32'和磁头滑动器1的浮动表面上的轮毂4.磁头滑块1从石英筒3的飞行高度是从干涉光。版权所有（C）2009，JPO＆INPIT

2. 发明专利

JP2004127413A Magnetic disk device 审中-公开
公开(公告)号：JP2004127413A
公开(公告)日：2004-04-22
申请号：JP2002289357
申请日：2002-10-02
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： TOKUYAMA MIKIO , JO KINKOKU , TSUCHIYAMA RYUJI , KURITA MASAYUKI , HIGUCHI SHINSUKE
IPC分类号： G11B33/14 , G11B25/04
摘要： PROBLEM TO BE SOLVED: To prevent the occurrence of a discharging phenomenon by reducing the potential of charges on a slider even when the slider is charged by contact friction between the slider and a disk.
SOLUTION: The charging of a disk surface and the slider is prevented by using an air flow accompanying disk rotation to make an ionizer small-sized, and mounting it in a magnetic disk device.
COPYRIGHT: (C)2004,JPO

3. 发明专利

JP2003297029A Magnetic head slider and magnetic disk drive 审中-公开
标题翻译：磁头滑块和磁盘驱动器
公开(公告)号：JP2003297029A
公开(公告)日：2003-10-17
申请号：JP2002102011
申请日：2002-04-04
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： TOKUYAMA MIKIO , MATSUMOTO MASAAKI , JO KINKOKU , TSUCHIYAMA RYUJI , KURITA MASAYUKI
IPC分类号： G11B5/39 , G11B5/60 , G11B21/21
摘要： PROBLEM TO BE SOLVED: To prevent damaging caused by collision with a very small projection on a magnetic disk surface, the generation of thermal asperities, or an erroneous read/write operation due to a change in the protruding amount of a magnetic head element caused by a temperature change. SOLUTION: A temperature sensor 60 and Peltier element 50 are disposed in the vicinity of a magnetic head element 20, and the temperature of the magnetic head element 20 is kept constant by a control circuit. Thus, the floating amount of the magnetic head element 20 is kept constant. COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题：为了防止由于磁盘表面上的非常小的突起的碰撞而引起的损坏，由于磁头的突出量的变化引起的热凹凸的产生或错误的读/写操作元素由温度变化引起。解决方案：温度传感器60和珀耳帖元件50设置在磁头元件20附近，并且磁头元件20的温度由控制电路保持恒定。因此，磁头元件20的浮动量保持恒定。版权所有（C）2004，JPO

4. 发明专利

JPH1049850A MAGNETIC DISC RECORDING APPARATUS 失效
公开(公告)号：JPH1049850A
公开(公告)日：1998-02-20
申请号：JP20560896
申请日：1996-08-05
申请人： HITACHI LTD
发明人： ISHII MIEKO , KAWAKUBO YOICHI , INOUE YOICHI , TSUCHIYAMA RYUJI
IPC分类号： G11B5/60 , G11B21/21
摘要： PROBLEM TO BE SOLVED: To avoid increase of adhesive force and friction force at the time of contact to the magnetic recording medium of a magnetic head slider, by tapering a protection film up to the rear end of magnetic head from the rear edge of the rear pad to the magnetic head side. SOLUTION: In the magnetic head slider 1 forming a tapered angle at its flowing end part, a couple of front pads 1 and only one rear pad 1 are provided. In this case, adhesion to the magnetic recording medium of the magnetic slider during css is prevented and the magnetic head can make an approach to the magnetic recording medium, during rotation of the magnetic recording medium, without inputting by the magnetic pole protection film (or head forming film) at the rear part of the magnetic head and head protection fiom in order to shorten the distance between the magnetic head and magnetic film.

5. 发明专利

JPH01303625A MAGNETIC HEAD 失效
公开(公告)号：JPH01303625A
公开(公告)日：1989-12-07
申请号：JP13271888
申请日：1988-06-01
申请人： HITACHI LTD
发明人： TSUCHIYAMA RYUJI
IPC分类号： G11B5/84 , G11B21/21
摘要： PURPOSE:To improve the smoothness accuracy of a magnetic recording medium surface without damaging said surface by inclining two rail faces and projecting rail face slightly around the outflow end of the two rail faces. CONSTITUTION:There is the projecting rail 4 in the arbitrary position between the rails 2 and 3. This rail inclines by an angle delta (deltanot equal to 0) with respect to the rails 2, 3. The projecting rail 4 inclines also by an angle beta with the rails 2, 3. The projecting rail side face can, therefore, the chipped away from right after the advance of the projecting matter, foreign matter and dust on the medium surface into the spacing between a slider 1 and the medium. The contact time between the projecting matter and the projecting rail is thus prolonged. Namely, the power to remove the projecting matter is related to impulse and the removing power increases when the contact time increases even if the power is the same and, therefore, the projecting matter is surely and efficiently removed. The smoothness accuracy of the medium surface is improved in this way.

6. 发明专利

JPS6366723A MAGNETIC RECORDING MEDIUM 失效
公开(公告)号：JPS6366723A
公开(公告)日：1988-03-25
申请号：JP21079386
申请日：1986-09-09
申请人： HITACHI LTD
发明人： ITO YASUSHI , IMAMURA MASAAKI , OTANI YUICHI , KAWAMURA YOSHIO , TSUCHIYAMA RYUJI , SUZUKI SHOJI , MAEHARA KIYOSHI
IPC分类号： G11B5/708 , C09D5/23 , C09D7/12 , C10M171/00 , C10N20/06 , C10N40/18
摘要： PURPOSE:To supply a min. required amt. of lubricating agent into a magnetic head and magnetic disk and to maintain always optimum lubricity and impact characteristic by incorporating plural pieces of microcapsules contg. the lubricating agent and having different breaking strengths integrally into the magnetic medium layer on a substrate. CONSTITUTION:The microcapsules 4 are broken by the content of the magnetic head and a magnetic recording medium 7 and the lubricating agent 5 contained therein is supplied into the contact surface to function to provide lubrication and to relieve impact. Only the microcapsules having the relatively low breaking strength are broken and a small amt. of the lubricating agent is merely supplied in the case of low-speed rotation. On the other hand, the more microcapsules are broken and a large amt. of the lubricating agent is eventually supplied in the contact state such as high speed rotation when the impact is heavy. The supplied lubricating agent is discharged and removed during stoppage and since the lubricating agent 5 is contained in the unbroken microcapsules, the sticking of both does not arise.

7. 发明专利

JP2008299981A Head slider 审中-公开
标题翻译：头滑块
公开(公告)号：JP2008299981A
公开(公告)日：2008-12-11
申请号：JP2007146431
申请日：2007-06-01
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： NANBA NIYUUSAN , XU JUNGUO , TSUCHIYAMA RYUJI
IPC分类号： G11B21/21 , G11B5/60
CPC分类号： G11B5/6005 , G11B5/4826 , G11B5/483 , G11B5/4853 , G11B5/4873 , G11B5/6058
摘要： PROBLEM TO BE SOLVED: To solve the problem wherein the pressure of a flow-out end pad is raised, then the floating quantity of a magnetic head is not reduced efficiently, sometimes it is raised inversely, when a piezoelectric element is deformed in the direction of reducing the floating quantity.
SOLUTION: A contact position with a dimple of a suspension is arranged on a flow-on end side nearer than the piezoelectric element, and a pad generating positive voltage is arranged between the dimple and the piezoelectric element in addition to the flow-out end pad. Thereby, variation of positive pressure generated on the flow-in end side nearer than the dimple when the piezoelectric element is deformed, is made small.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题为了解决流出端焊盘的压力升高的问题，磁头的浮动量不会有效降低，有时当压电元件变形时反而升高在减少浮动量的方向上。解决方案：具有悬挂凹坑的接触位置布置在比压电元件更靠近的流动端侧，并且除了流动的方式之外，还在凹坑和压电元件之间设置产生正电压的焊盘，出端垫。因此，当压电元件变形时，在比凹部更靠近的流入端侧产生的正压的变化较小。版权所有（C）2009，JPO＆INPIT

8. 发明专利

JP2004253061A Magnetic disk device and magnetic head slider 审中-公开
公开(公告)号：JP2004253061A
公开(公告)日：2004-09-09
申请号：JP2003042755
申请日：2003-02-20
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： TSUCHIYAMA RYUJI , KODAIRA HIDEKAZU , MATSUMOTO MASAAKI , TOKUYAMA MIKIO , JO KINKOKU , HASHIMOTO SEIJI
IPC分类号： G11B5/60 , G11B21/21
摘要： PROBLEM TO BE SOLVED: To simultaneously reduce a slider contact vibration with a smooth medium surface, a floating amount fluctuation with respect to medium surface undulation, and a pressure change around a slider.
SOLUTION: The ratio δs/δr of the step depth δs of a magnetic head slider to a recess depth is set within the range of 0.24≤δs/δr≤0.34 in a 2.5 inch disk device, and within the range of 0.20≤δs/δr≤0.32 in a 1.0 inch disk device. The tilting angle θ2 of the air flow-in end of a flow-out pad 12 is set to θ2≤54° in the 2.5 inch disk device, and to θ2≤58.2° in the 1.0 inch disk device. Thus, the magnetic head slider excellent to be made into high-density recording, made high in reliability and low in cost and the magnetic disk device are obtained.
COPYRIGHT: (C)2004,JPO&NCIPI

9. 发明专利

JP2003308670A Magnetic disk unit 审中-公开
标题翻译：磁碟单元
公开(公告)号：JP2003308670A
公开(公告)日：2003-10-31
申请号：JP2002109867
申请日：2002-04-12
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： KURITA MASAYUKI , JO KINKOKU , MATSUMOTO MASAAKI , TSUCHIYAMA RYUJI , TOKUYAMA MIKIO , INOUE YOICHI
IPC分类号： G11B21/21
摘要： PROBLEM TO BE SOLVED: To reduce the effect on a recording and reproducing element, or a slider, or a magnetic disk when the recording and reproducing element or the slider is in contact with the magnetic disk and to detect the contact of the recording and reproducing element or the slider with the magnetic disk. SOLUTION: The slider is provided with a floating amount control means using a piezoelectric actuator. An applied voltage including DC and AC components is applied to the piezoelectric actuator. Increasing gradually the DC component approaches the tip of the actuator to the magnetic disk while the tip of the actuator is minutely vibrated by the AC component. COPYRIGHT: (C)2004,JPO

10. 发明专利

JP2002319256A MAGNETIC DISK DEVICE AND LOADING/UNLOADING METHOD THEREFOR 失效
公开(公告)号：JP2002319256A
公开(公告)日：2002-10-31
申请号：JP2001126194
申请日：2001-04-24
申请人： HITACHI LTD
发明人： JO KINKOKU , TSUCHIYAMA RYUJI , ISHII HIROSHI
IPC分类号： G11B21/12
摘要： PROBLEM TO BE SOLVED: To prevent damages at loading and unloading of a magnetic head slider and a magnetic disk and to limit a loading/unloading zone, within a fixed range in the circumferential direction of the magnetic disk. SOLUTION: In the magnetic disk device 100 of a ramped loading system, a loading and unloading control part 14 which preliminarily records an amount of runout for each circumferential position of the loading zone of the magnetic disk 10 and detects the circumferential positions and amounts of runout and performs control by selecting the loading speed and the unloading speed of the slider 1, so as to be loaded or unloaded at runout descending slopes of the loading zone of the disk 10 is provided. As a result, since the slider can be loaded and unloaded at the runout descending slopes of the disk 10, a smooth loading/unloading operation becomes possible and then the slider and the disk are prevented from being damaged.

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