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    • 1. 发明授权
    • Disk head height control
    • 磁盘头高度控制
    • US06473259B1
    • 2002-10-29
    • US09405832
    • 1999-09-24
    • David S. KuoWei H. YaoRamesh SundaramHuan Tang
    • David S. KuoWei H. YaoRamesh SundaramHuan Tang
    • G11B2102
    • G11B21/21G11B5/60
    • A disk head fly height adjustment method includes positioning a disk head over a surface of a rotating data storage disk and dynamically altering a load point of the disk head by changing an electrical force applied to an active element mounted to a head-gimbal assembly. A data storage apparatus includes a head assembly having a data transfer head coupled to a gimbal and an active element coupling the head assembly and a suspension. The active element is configured to exert a force between the head assembly and the suspension in response to an electrical force applied to the active element. The active element can dynamically shift a load point of a disk head. Shifting the load point can alter the pitch of the disk head and, consequently, the fly height of the head.
    • 盘头飞行高度调节方法包括将盘头定位在旋转数据存储盘的表面上,并且通过改变施加到安装到头部万向节组件上的有源元件的电力来动态地改变盘头的负载点。 数据存储装置包括头组件,其具有耦合到万向节的数据传送头和联接头组件和悬架的有源元件。 有源元件构造成响应于施加到有源元件的电力而在头部组件和悬架之间施加力。 有源元件可以动态地移动磁盘头的负载点。 移动负载点可以改变磁头的间距,从而改变磁头的飞行高度。
    • 4. 发明授权
    • Media contact zone with bell-shaped texturing features
    • 具有钟形纹理特征的介质接触区
    • US06663938B1
    • 2003-12-16
    • US09210018
    • 1998-12-11
    • Wei H. YaoYuh-Jen ChengLi-Ping WangDavid S. KuoChiao-Ping KuBruno Marchon
    • Wei H. YaoYuh-Jen ChengLi-Ping WangDavid S. KuoChiao-Ping KuBruno Marchon
    • G11B582
    • G11B5/82G11B5/6005G11B23/0021Y10T428/24355
    • A magnetic data recording medium substrate has a contact zone and a data zone. The contact zone is textured by forming multiple texturing features, each having a bell-shaped profile resembling a Gaussian curve. The features preferably are formed by pulsed laser energy applied to a glass substrate, or to an aluminum nickel-phosphorous substrate coated with a glass layer. As compared to previous laser texturing approaches, the laser beam is less narrowly focused to provide a beam impingement area with a diameter of at least three microns, forming texturing features with diameters of at least three microns. The texturing features preferably are uniform in height and diameter, and may be symmetrical or have asymmetrical aspects, so long as bell-shaped profiles are present in the direction of travel of the recording medium, relative to transducing heads.
    • 磁数据记录介质基板具有接触区和数据区。 通过形成多个纹理特征来形成接触区域,每个具有类似于高斯曲线的钟形轮廓。 特征优选通过施加到玻璃基板的脉冲激光能量或涂覆有玻璃层的铝镍磷基板形成。 与以前的激光纹理方法相比,激光束的聚焦较少,以提供直径至少为三微米的光束冲击区域,形成具有至少三微米直径的纹理特征。 纹理特征优选地在高度和直径上是均匀的,并且可以是对称的或具有不对称的方面,只要钟形轮廓相对于换能头在记录介质的行进方向上存在。
    • 6. 发明授权
    • Magnetic media with randomly positioned texturing features
    • 具有随机定位纹理特征的磁性介质
    • US06404590B1
    • 2002-06-11
    • US09381365
    • 2000-01-06
    • David S. KuoBruno MarchonWei H. Yao
    • David S. KuoBruno MarchonWei H. Yao
    • G11B566
    • G11B5/84B23K26/0823G11B5/6011G11B5/74G11B5/82G11B5/8404G11B17/32
    • A magnetic data storage medium includes a dedicated transducing head contact zone for engaging an air bearing slider, primarily when the disk is stationary. The contact zone is textured with an irregular sequence of spaced apart nodules forming a substantially circumferential, spiral path. The spiral path includes multiple terms that define a uniform radial pitch. The circumferential pitch is irregular, more preferably determined according to pseudo-random function in which the actual spacing intervals vary about a nominal interval, over a range comparable to, but generally less than, the interval. The pseudo-random array can be formed by a texturing process that includes directing a focused laser beam onto the contact zone. The disk is rotated to maintain a constant circumferential speed relative to the laser, and also is translated radially to provide the desired radial pitch. The laser is operated in a continuous wave mode, with an acousto-optic modulator between the laser and disk operated to provide a pseudo-random variance in time intervals between successive laser exposures.
    • 磁数据存储介质包括用于接合空气轴承滑块的专用换能头接触区,主要是当盘静止时。 接触区域具有形成基本上圆周的螺旋路径的间隔开的结节的不规则序列。 螺旋路径包括限定均匀径向间距的多个项。 圆周间距是不规则的,更优选地根据伪随机函数来确定,其中实际间隔间隔在标称间隔上变化,在与该间隔相当但通常小于该间隔的范围内。 伪随机阵列可以通过纹理化处理形成,其包括将聚焦的激光束引导到接触区上。 盘旋转以相对于激光器保持恒定的圆周速度,并且还被径向平移以提供期望的径向间距。 激光器以连续波模式操作,激光和光盘之间的声光调制器被操作以在连续激光曝光之间的时间间隔中提供伪随机方差。
    • 7. 发明授权
    • Process for texturing recording media substrates
    • 纹理记录介质基板的工艺
    • US06403170B2
    • 2002-06-11
    • US09780270
    • 2001-02-09
    • David S. KuoLi-Ping WangWei H. Yao
    • David S. KuoLi-Ping WangWei H. Yao
    • G11B572
    • G11B5/7315G11B5/74G11B5/82G11B23/0021Y10S428/90Y10T428/24355Y10T428/24802
    • A magnetic data storage medium includes a dedicated transducing head contact zone for engaging an air bearing slider, primarily when the disk is stationary and also during disk accelerations and decelerations. The contact zone has a dual baseline texture, formed by first creating a recessed region within the transducing head contact zone, and then by forming multiple nodules or other texturing features within the recessed region. The texturing features project upwardly from a recessed surface of the recessed region, and also project above an upper surface of the disk by an amount less than the texturing feature height. Consequently, the texturing features are large enough to counteract stiction due to liquid lubricant meniscus formation, yet also have heights sufficiently low relative to the upper surface to allow reduced transducer flying heights. According to a preferred texturing process, the recessed region consists of multiple individual recesses produced by applying a carbon layer to the disk, then forming cavities by selective laser ablation of the carbon layer.
    • 磁数据存储介质包括用于接合空气轴承滑块的专用换能头接触区,主要是当盘静止时以及在盘的加速和减速期间。 接触区域具有双基线纹理,首先在传感头接触区域内形成凹陷区域,然后通过在凹陷区域内形成多个结节或其它纹理特征而形成。 纹理特征从凹陷区域的凹陷表面向上突出,并且还以小于纹理特征高度的量突出在盘的上表面上方。 因此,纹理特征足够大以抵消由于液体润滑剂弯液面形成导致的静摩擦,而且还具有相对于上表面足够低的高度,以允许减小的换能器飞行高度。 根据优选的纹理化工艺,凹陷区域由通过将碳层施加到盘而产生的多个单独凹槽,然后通过碳层的选择性激光烧蚀形成空腔。
    • 8. 发明授权
    • Media landing zone with recess for texturing features
    • 带凹槽的媒体着陆区,用于纹理特征
    • US06187413B1
    • 2001-02-13
    • US09205927
    • 1998-12-04
    • David S. KuoLi-Ping WangWei H. Yao
    • David S. KuoLi-Ping WangWei H. Yao
    • G11B582
    • G11B5/7315G11B5/74G11B5/82G11B23/0021Y10S428/90Y10T428/24355Y10T428/24802
    • A magnetic data storage medium includes a dedicated transducing head contact zone for engaging an air bearing slider, primarily when the disk is stationary and also during disk accelerations and decelerations. The contact zone has a dual baseline texture, formed by first creating a recessed region within the transducing head contact zone, and then by forming multiple nodules or other texturing features within the recessed region. The texturing features project upwardly from a recessed surface of the recessed region, and also project above an upper surface of the disk by an amount less than the texturing feature height. Consequently, the texturing features are large enough to counteract stiction due to liquid lubricant meniscus formation, yet also have heights sufficiently low relative to the upper surface to allow reduced transducer flying heights. According to a preferred texturing process, the recessed region consists of multiple individual recesses produced by applying a carbon layer to the disk, then forming cavities by selective laser ablation of the carbon layer.
    • 磁数据存储介质包括用于接合空气轴承滑块的专用换能头接触区,主要是当盘静止时以及在盘的加速和减速期间。 接触区域具有双基线纹理,首先在传感头接触区域内形成凹陷区域,然后通过在凹陷区域内形成多个结节或其它纹理特征而形成。 纹理特征从凹陷区域的凹陷表面向上突出,并且还以小于纹理特征高度的量突出在盘的上表面上方。 因此,纹理特征足够大以抵消由于液体润滑剂弯液面形成导致的静摩擦,而且还具有相对于上表面足够低的高度,以允许减小的换能器飞行高度。 根据优选的纹理化工艺,凹陷区域由通过将碳层施加到盘而产生的多个单独凹槽,然后通过碳层的选择性激光烧蚀形成空腔。