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1.发明授权公开(公告)号：US09484048B2
公开(公告)日：2016-11-01
申请号：US12623151
申请日：2009-11-20
CPC分类号： G11B5/314 , B24B37/042 , G11B5/3136 , G11B5/3967 , G11B5/6064 , Y10T29/49032
摘要： According to one embodiment, a magnetic head includes a write element, a read element, and a heating element disposed between the write element and the read element. When power is applied to the heating element, either the read element or the write element projects beyond a plane of an air-bearing surface (ABS) of the magnetic head, and when power is not applied to the heating element, a portion of the ABS of the magnetic head facing a magnetic disk close to the heating element has a concave shape. In another embodiment, when power is applied to the heating element, at least one of a portion of the read element and a portion of the write element approaches a magnetic disk, and when power is not applied to the heating element, a portion of the ABS of the magnetic head facing a magnetic disk close to the heating element has a concave shape.
摘要翻译： 根据一个实施例，磁头包括写入元件，读取元件和设置在写入元件和读取元件之间的加热元件。 当对加热元件施加电力时，读取元件或写入元件突出超过磁头的空气轴承表面（ABS）的平面，并且当功率未被施加到加热元件时，一部分 面对靠近加热元件的磁盘的磁头的ABS具有凹形。 在另一个实施例中，当向加热元件施加电力时，读取元件的一部分和写入元件的一部分中的至少一个接近磁盘，并且当功率未被施加到加热元件时， 面对靠近加热元件的磁盘的磁头的ABS具有凹形。
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2.发明授权Hard-disk drive including fly-height-adjustment heating element and position-adjustment heating element and method of controlling fly height 失效包括飞高调节加热元件和位置调整加热元件的硬盘驱动器以及控制飞行高度的方法公开(公告)号：US08593749B2
公开(公告)日：2013-11-26
申请号：US12635641
申请日：2009-12-10
IPC分类号： G11B21/16
CPC分类号： G11B5/6064 , G11B5/6005
摘要： A hard-disk drive. The hard-disk drive includes a head-slider configured to fly in proximity with a recording surface of a magnetic-recording disk, and a fly-height variation compensator configured to generate a signal for compensating variation in fly height of a write element of the head-slider. The head-slider further includes the write element configured to write data to the magnetic-recording disk, a fly-height-adjustment heating element configured to displace the write element towards the magnetic-recording disk, and a position-adjustment heating element configured to displace the write element in at least a direction perpendicular to a flying direction. The fly-height variation compensator is further configured to add the signal for compensating variation in fly height to a control signal for output to the fly-height-adjustment heating element.
摘要翻译： 硬盘驱动器。 硬盘驱动器包括头部滑块，其被配置为与磁记录盘的记录表面靠近地飞行;飞高变化补偿器，被配置为产生用于补偿所述写入元件的飞行高度变化的信号 头滑块 磁头滑动器还包括被配置为将数据写入磁记录盘的写入元件，配置成将写入元件朝向磁记录盘移位的飞行高度调节加热元件，以及配置为 至少在垂直于飞行方向的方向上移位写入元件。 飞高变化补偿器还被配置为将用于补偿飞行高度变化的信号添加到控制信号，以输出到飞行高度调节加热元件。
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公开(公告)号：US07864474B2
公开(公告)日：2011-01-04
申请号：US11789866
申请日：2007-04-25
申请人： Noriaki Satoh , Toyomi Ohsawa , Yumi Nagano , Kouji Miyake , Yoshiaki Uji , Masayuki Kurita
发明人： Noriaki Satoh , Toyomi Ohsawa , Yumi Nagano , Kouji Miyake , Yoshiaki Uji , Masayuki Kurita
IPC分类号： G11B5/02
CPC分类号： G11B5/3133 , G11B5/6064 , G11B5/607 , G11B19/04
摘要： Embodiments in accordance with the present invention reduce the number of errors caused by the aged deterioration of a heater for adjusting the clearance between a head and a disk. According to one embodiment, a thermal fly height control (TFC) controller executes the measurement of a resistance value of a heater in a predetermined timing. The TFC controller judges whether or not the measured resistance value falls within a predetermined reference range. If the measured resistance value falls within the reference range, the processing ends without performing any other processing. If the measured resistance value goes out of the reference range, the TFC controller executes error handling processing in response to a resistance failure. As one of the error handling processing, the TFC controller notifies the host that the abnormality (resistance failure) has been detected in the resistance value of the TFC heater.
摘要翻译： 根据本发明的实施例减少了用于调节头部和盘之间的间隙的加热器的老化劣化引起的误差的数量。 根据一个实施例，热飞跃高度控制（TFC）控制器在预定定时执行加热器的电阻值的测量。 TFC控制器判断所测量的电阻值是否在预定的参考范围内。 如果测量的电阻值落在参考范围内，则处理结束而不执行任何其它处理。 如果测量的电阻值超出参考范围，则TFC控制器响应于电阻故障执行错误处理处理。 作为错误处理处理之一，TFC控制器通知主机在TFC加热器的电阻值中检测到异常（电阻故障）。
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4.发明申请MAGNETIC HEAD WITH A HEATING ELEMENT BETWEEN THE READ AND WRITE ELEMENT AND METHOD OF MANUFACTURING THEREOF 有权具有读取和写入元件之间的加热元件的磁头及其制造方法公开(公告)号：US20100134915A1
公开(公告)日：2010-06-03
申请号：US12623151
申请日：2009-11-20
CPC分类号： G11B5/314 , B24B37/042 , G11B5/3136 , G11B5/3967 , G11B5/6064 , Y10T29/49032
摘要： According to one embodiment, a magnetic head includes a write element, a read element, and a heating element disposed between the write element and the read element. When power is applied to the heating element, either the read element or the write element projects beyond a plane of an air-bearing surface (ABS) of the magnetic head, and when power is not applied to the heating element, a portion of the ABS of the magnetic head facing a magnetic disk close to the heating element has a concave shape. In another embodiment, when power is applied to the heating element, at least one of a portion of the read element and a portion of the write element approaches a magnetic disk, and when power is not applied to the heating element, a portion of the ABS of the magnetic head facing a magnetic disk close to the heating element has a concave shape.
摘要翻译： 根据一个实施例，磁头包括写入元件，读取元件和设置在写入元件和读取元件之间的加热元件。 当对加热元件施加电力时，读取元件或写入元件突出超过磁头的空气轴承表面（ABS）的平面，并且当功率未被施加到加热元件时，一部分 面对靠近加热元件的磁盘的磁头的ABS具有凹形。 在另一个实施例中，当向加热元件施加电力时，读取元件的一部分和写入元件的一部分中的至少一个接近磁盘，并且当功率未被施加到加热元件时， 面对靠近加热元件的磁盘的磁头的ABS具有凹形。
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公开(公告)号：US07649714B2
公开(公告)日：2010-01-19
申请号：US11201569
申请日：2005-08-10
IPC分类号： G11B5/60
CPC分类号： G11B5/6005 , G11B5/3106 , G11B5/3133 , G11B5/314 , G11B5/40 , G11B5/6064 , G11B5/607
摘要： Embodiments of the invention improve the power consumption and response speed of a heater for the gap flying height (hg) adjustment, to minimize an influence that the heater has on a life of a read element, and to provide a heater having resistance lines reduced in breaking and ensuring higher reliability. In one embodiment, a read/write element is formed near an air bearing surface (ABS) on a slider, and the circumference of the read/write element is filled with alumina. The read/write element includes an upper magnetic pole piece, a lower magnetic pole piece, a coil, and a resist filling around the coil, and a read element (MR) for performing reading, and an upper shield and lower shield for protecting the read element from an external magnetic field. A heater for adjusting the flying height is provided between the slider and the read/write element but near the read/write element. A temperature gradient relaxing material having a thermal conductivity higher than that of the heater and that of a material (alumina) filling around the heater is formed near the heater.
摘要翻译： 本发明的实施例提高了用于间隙飞行高度（hg）调节的加热器的功率消耗和响应速度，以最小化加热器对读取元件的寿命的影响，并且提供具有减小的电阻线的加热器 打破并确保更高的可靠性。 在一个实施例中，在滑块上的空气轴承表面（ABS）附近形成读/写元件，并且读/写元件的圆周上填充有氧化铝。 读/写元件包括上磁极片，下磁极片，线圈和围绕线圈填充的抗蚀剂，以及用于执行读取的读取元件（MR），以及用于保护 从外部磁场读取元件。 用于调节飞行高度的加热器设置在滑块和读/写元件之间但靠近读/写元件。 在加热器附近形成导热率高于加热器的热导率的温度梯度松弛材料和填充在加热器周围的材料（氧化铝）的温度梯度松弛材料。
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公开(公告)号：US20090262608A1
公开(公告)日：2009-10-22
申请号：US12386235
申请日：2009-04-14
CPC分类号： G11B5/314 , G11B5/3967 , G11B5/6064 , G11B2005/0005 , G11B2005/0021
摘要： Embodiments of the present invention provide a technique for projecting both a write element portion in writing and a read element portion in reading, and controlling a projecting distance of each write element and read element. According to one embodiment, a light absorbing member and a thermally expanding member are formed near a read element, and light is irradiated to the light absorbing member, thereby a read element is projected. Alternatively, light absorbing members, which absorb light having different wavelengths from each other, and thermally expanding members are formed near a write element and near the read element respectively, and a wavelength or intensity of light to be irradiated is changed, thereby a projecting distance of each of the write element and the read element is individually optionally controlled.
摘要翻译： 本发明的实施例提供了一种用于在写入中读写元件部分和读取元件部分两者投影并控制每个写入元件和读取元件的投影距离的技术。 根据一个实施例，在读取元件附近形成光吸收构件和热膨胀构件，并且光照射到光吸收构件，从而投影读取元件。 或者，分别在写入元件附近和读取元件附近形成吸收彼此具有不同波长的光和热膨胀部件的光吸收部件，并且照射的光的波长或强度发生变化， 每个写元件和读元件分别可选地被控制。
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公开(公告)号：US20090141391A1
公开(公告)日：2009-06-04
申请号：US12290533
申请日：2008-10-30
申请人： Kenichi Kuramoto , Masayuki Kurita , Yoshihiko Maeda , Hidetsugu Tanaka , Akihiro Sera , Katsumasa Yamazaki
发明人： Kenichi Kuramoto , Masayuki Kurita , Yoshihiko Maeda , Hidetsugu Tanaka , Akihiro Sera , Katsumasa Yamazaki
IPC分类号： G11B21/02
摘要： Embodiments of the present invention help to precisely control the clearance between a head and disk for the pressure without using a barometric sensor. In an embodiment of the present invention, an HDD determines a clearance from variations in operational parameters, and further determines a variation in pressure by deducting the clearance variation caused by a variation in temperature from the clearance. When the HDD controls the clearance in accordance with the pressure change, the HDD checks for head-disk contact. The accuracy and reliability in pressure measurement (clearance measurement) using operational parameters are not high. Therefore, confirming the pressure measurement by the presence or absence of head-disk contact eliminates head-disk contact in the following read/write operation to attain a securer margin for the clearance.
摘要翻译： 本发明的实施例有助于在不使用气压传感器的情况下精确地控制压头与盘之间的压力间隙。 在本发明的一个实施例中，HDD确定与操作参数变化之间的间隙，并且通过减去由间隙的温度变化引起的间隙变化来进一步确定压力变化。 当HDD根据压力变化控制间隙时，HDD检查头盘接触。 使用操作参数的压力测量（间隙测量）的精度和可靠性不高。 因此，通过头盘接触的存在或不存在来确认压力测量可以在随后的读/写操作中消除头盘接触，以获得间隙的安全裕度。
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公开(公告)号：US07525759B2
公开(公告)日：2009-04-28
申请号：US11222566
申请日：2005-09-09
IPC分类号： G11B5/39
CPC分类号： G11B33/1493
摘要： Embodiments of the invention provide a magnetic disk device which improves the shielding function for the magnetic heads while maintaining a form factor having an inexpensive constitution. In one embodiment, a magnetic disk device comprises a rotary disk-type magnetic disk; a magnetic head for recording or reproducing information; a magnetic head support mechanism for supporting the magnetic head; a shroud having an opening in which the magnetic head support mechanism is inserted, and surrounding the outer circumference of the magnetic disk; and a housing. The housing includes a base and a cover, and accommodates the magnetic disk, the magnetic head, the magnetic head support mechanism and the shroud. The base is constituted by using a nonmagnetic material and the shroud is constituted by using a magnetic material.
摘要翻译： 本发明的实施例提供了一种磁盘装置，其在保持具有便宜构造的形状因素的同时提高了磁头的屏蔽功能。 在一个实施例中，磁盘装置包括旋转盘式磁盘; 用于记录或再现信息的磁头; 用于支撑磁头的磁头支撑机构; 具有开口的护罩，其中磁头支撑机构插入其中，并围绕磁盘的外周; 和住房。 壳体包括基座和盖，并且容纳磁盘，磁头，磁头支撑机构和护罩。 底座由使用非磁性材料构成，护罩由磁性材料构成。
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公开(公告)号：US20080247079A1
公开(公告)日：2008-10-09
申请号：US11789866
申请日：2007-04-25
申请人： Noriaki Satoh , Toyomi Ohsawa , Yumi Nagano , Kouji Miyake , Yoshiaki Uji , Masayuki Kurita
发明人： Noriaki Satoh , Toyomi Ohsawa , Yumi Nagano , Kouji Miyake , Yoshiaki Uji , Masayuki Kurita
IPC分类号： G11B21/02
CPC分类号： G11B5/3133 , G11B5/6064 , G11B5/607 , G11B19/04
摘要： Embodiments in accordance with the present invention reduce the number of errors caused by the aged deterioration of a heater for adjusting the clearance between a head and a disk. According to one embodiment, a thermal fly height control (TFC) controller executes the measurement of a resistance value of a heater in a predetermined timing. The TFC controller judges whether or not the measured resistance value falls within a predetermined reference range. If the measured resistance value falls within the reference range, the processing ends without performing any other processing. If the measured resistance value goes out of the reference range, the TFC controller executes error handling processing in response to a resistance failure. As one of the error handling processing, the TFC controller notifies the host that the abnormality (resistance failure) has been detected in the resistance value of the TFC heater.
摘要翻译： 根据本发明的实施例减少了用于调节头部和盘之间的间隙的加热器的老化劣化引起的误差的数量。 根据一个实施例，热飞跃高度控制（TFC）控制器在预定定时执行加热器的电阻值的测量。 TFC控制器判断所测量的电阻值是否在预定的参考范围内。 如果测量的电阻值落在参考范围内，则处理结束而不执行任何其它处理。 如果测量的电阻值超出参考范围，则TFC控制器响应于电阻故障执行错误处理处理。 作为错误处理处理之一，TFC控制器通知主机在TFC加热器的电阻值中检测到异常（电阻故障）。
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公开(公告)号：US20080192379A1
公开(公告)日：2008-08-14
申请号：US12011284
申请日：2008-01-24
申请人： Masayuki Kurita , Hideaki Tanaka , Noriaki Satoh , Toyomi Ohsawa , Toshiya Shiramatsu , Atsushi Yatagai , Satoshi Ohki , Hiroshi Ide , Hidekazu Kohira , Takehiko Hamaguchi
发明人： Masayuki Kurita , Hideaki Tanaka , Noriaki Satoh , Toyomi Ohsawa , Toshiya Shiramatsu , Atsushi Yatagai , Satoshi Ohki , Hiroshi Ide , Hidekazu Kohira , Takehiko Hamaguchi
CPC分类号： G11B5/455 , G11B5/3133 , G11B5/6029 , G11B5/607 , G11B5/6076 , Y10T29/49004
摘要： Embodiments of the present invention provide a process that monitors a magnetic playback signal while gradually increasing an electricity supply amount for a heater to thereby determine contact between a magnetic head slider and a magnetic disk medium. According to one embodiment, after components for configuring a magnetic recording/playback portion are assembled into a housing, magnetic information is played back on a specific track of a magnetic disk medium by using a playback element while gradually increasing an electricity supply amount for a heater of a magnetic head slider. An amplitude of a playback signal is measured at a plurality of portions along a circumferential direction of the track. Contact between the magnetic head slider and the magnetic disk medium is detected in accordance with an increase in variation in the measured amplitude. Then, a value obtained by subtracting an predetermined value of an electricity amount from an electricity amount in the event of detection of the contact is stored (set) as an appropriate electricity amount for the magnetic head slider into a storage portion.
摘要翻译： 本发明的实施例提供了一种监视磁回放信号的过程，同时逐渐增加用于加热器的电力供应量，从而确定磁头滑块和磁盘介质之间的接触。 根据一个实施例，在用于配置磁记录/重放部分的组件被组装到外壳中之后，通过使用回放元件在磁盘介质的特定轨道上回放磁信息，同时逐渐增加加热器的供电量 的磁头滑块。 沿着轨道的圆周方向的多个部分测量重放信号的幅度。 根据测量幅度的变化的增加来检测磁头滑块和磁盘介质之间的接触。 然后，通过从检测到接触的电量的电量中减去电量的预定值而获得的值作为用于磁头滑块的适当电量被存储（设置）到存储部分中。
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