公开(公告)号：US07900497B2

公开(公告)日：2011-03-08

申请号：US11950021

申请日：2007-12-04

申请人： Qing Dai ,  Bruno Marchon ,  Tsai-Wei Wu

发明人： Qing Dai ,  Bruno Marchon ,  Tsai-Wei Wu

IPC分类号： G01B21/30

CPC分类号： G01B11/303 ,  B82Y10/00 ,  G01Q60/24

摘要： The true roughness of highly granular perpendicular media is measured by forming an inverse replica of the surface of the media. The invention enables AFM measurements of granular media valley depth to more consistently predict the corrosion performance of the media. A liquid resist is used to first replicate the media topography and form the inverse replica. The narrow valleys in the original media are precisely modeled as sharp peaks on the replica. The height of the peaks are readily measured with an AFM tip. The resulting image is a negative of the original surface.

摘要翻译： 通过形成介质表面的反向复制品来测量高度颗粒状垂直介质的真实粗糙度。 本发明使粒状介质谷深度的AFM测量能够更一致地预测介质的腐蚀性能。 使用液体抗蚀剂首先复制介质形貌并形成反向复制品。 原始介质中的窄谷精确地建模为复制品上的尖峰。 用AFM尖端容易地测量峰的高度。 所得到的图像是原始曲面的负值。

公开(公告)号：US20090139314A1

公开(公告)日：2009-06-04

申请号：US11950021

申请日：2007-12-04

申请人： Qing Dai ,  Bruno Marchon ,  Tsai-Wei Wu

发明人： Qing Dai ,  Bruno Marchon ,  Tsai-Wei Wu

IPC分类号： G01B5/28 ,  G11B5/64

CPC分类号： G01B11/303 ,  B82Y10/00 ,  G01Q60/24

摘要： The true roughness of highly granular perpendicular media is measured by forming an inverse replica of the surface of the media. The invention enables AFM measurements of granular media valley depth to more consistently predict the corrosion performance of the media. A liquid resist is used to first replicate the media topography and form the inverse replica. The narrow valleys in the original media are precisely modeled as sharp peaks on the replica. The height of the peaks are readily measured with an AFM tip. The resulting image is a negative of the original surface.

摘要翻译： 通过形成介质表面的反向复制品来测量高度颗粒状垂直介质的真实粗糙度。 本发明使粒状介质谷深度的AFM测量能够更一致地预测介质的腐蚀性能。 使用液体抗蚀剂首先复制介质形貌并形成反向复制品。 原始介质中的窄谷精确地建模为复制品上的尖峰。 用AFM尖端容易地测量峰的高度。 所得到的图像是原始曲面的负值。

公开(公告)号：US07879470B2

公开(公告)日：2011-02-01

申请号：US11940960

申请日：2007-11-15

申请人： Qing Dai ,  Hoa V. Do ,  Bruno Marchon ,  Kentaro Takano

发明人： Qing Dai ,  Hoa V. Do ,  Bruno Marchon ,  Kentaro Takano

IPC分类号： G11B5/65

CPC分类号： G11B5/65

摘要： A method for improving magnetic grain segregation in perpendicular recording media includes providing a substrate comprising a rigid support structure, depositing a soft underlayer on top of the substrate depositing an intermediate layer on top of the soft underlayer, providing a plurality of prospective segregants, determining the surface energies and the heat of formation of the prospective segregants and selecting the prospective segregant with a low surface energy and a high heat of formation. The method also includes providing at least one layer with surface energies progressively increasing to minimize the difference between the surface energy of a carbon overcoat and the segregant.

摘要翻译： 用于改善垂直记录介质中的磁晶粒偏析的方法包括提供包括刚性支撑结构的基底，在所述基底的顶部上沉积软底层，在所述软底层的顶部上沉积中间层，提供多个预期分离子， 表面能和前瞻性分离物的形成热量，并选择具有低表面能和高热量形成的前瞻性分离体。 该方法还包括提供至少一层具有逐渐增加的表面能，以最小化碳外涂层和分离器的表面能之间的差异。

公开(公告)号：US20090244769A1

公开(公告)日：2009-10-01

申请号：US12080173

申请日：2008-03-31

申请人： Qing Dai ,  Bruno Marchon

发明人： Qing Dai ,  Bruno Marchon

IPC分类号： G11B33/14

CPC分类号： G11B33/1453

摘要： Oxygen scavenger for use in a hard disk drive. The oxygen scavenger removes oxygen from an interior of a hard disk drive to prevent corrosion of corrodible materials in magnetic media or magnetic heads. The oxygen scavenger is incorporated into a film so that it uses a limited physical space within an interior of the hard disk drive. The hard disk drive is either permeable to the outside environment or sealed so that gases from the outside environment are unable to enter the interior of the hard disk drive.

摘要翻译： 用于硬盘驱动器的除氧剂。 氧气清除剂从硬盘驱动器的内部去除氧气，以防止腐蚀性材料在磁性介质或磁头中的腐蚀。 除氧剂被并入到膜中，使得其在硬盘驱动器内部使用有限的物理空间。 硬盘驱动器对外部环境是可渗透的或密封的，使得来自外部环境的气体不能进入硬盘驱动器的内部。

公开(公告)号：US20090130490A1

公开(公告)日：2009-05-21

申请号：US11940960

申请日：2007-11-15

申请人： Qing Dai ,  Hoa V. Do ,  Bruno Marchon ,  Kentaro Takano

发明人： Qing Dai ,  Hoa V. Do ,  Bruno Marchon ,  Kentaro Takano

IPC分类号： G11B5/33 ,  B05D5/12

CPC分类号： G11B5/65

摘要： A method for improving magnetic grain segregation in perpendicular recording media includes providing a substrate comprising a rigid support structure, depositing a soft underlayer on top of the substrate depositing an intermediate layer on top of the soft underlayer, providing a plurality of prospective segregants, determining the surface energies and the heat of formation of the prospective segregants and selecting the prospective segregant with a low surface energy and a high heat of formation. The method also includes providing at least one layer with surface energies progressively increasing to minimize the difference between the surface energy of a carbon overcoat and the segregant.

摘要翻译： 用于改善垂直记录介质中的磁晶粒偏析的方法包括提供包括刚性支撑结构的基底，在所述基底的顶部上沉积软底层，在所述软底层的顶部上沉积中间层，提供多个预期分离子， 表面能和前瞻性分离物的形成热量，并选择具有低表面能和高热量形成的前瞻性分离体。 该方法还包括提供至少一层具有逐渐增加的表面能，以最小化碳外涂层和分离器的表面能之间的差异。

公开(公告)号：US06920008B2

公开(公告)日：2005-07-19

申请号：US10676734

申请日：2003-09-30

申请人： David Braunstein ,  Qing Dai ,  Bruno Marchon

发明人： David Braunstein ,  Qing Dai ,  Bruno Marchon

IPC分类号： G11B5/00 ,  G11B5/60 ,  G11B27/36

CPC分类号： G11B5/6005 ,  G11B5/455 ,  G11B27/36 ,  G11B2005/001 ,  G11B2220/20

摘要： A method is presented for measuring the height of an air-bearing separating a flying component from a rotating surface using physical deformation of a small amount of material deposited on the surface. One embodiment of the invention is a method of measuring the fly-height of a slider using physical deformation of material deposited on the disk. Small amounts of the deformable material such as a viscoelastic lubricant are placed on a limited area of the disk so that the slider can otherwise fly normally. The slider's fly-height is established over the unaltered portion of the disk, then the slider impacts the deformable material. This process results in the deformable material being flattened or removed above the fly-height of the slider. The height of the remaining material is then measurable as the fly-height.

公开(公告)号：US20130301157A1

公开(公告)日：2013-11-14

申请号：US13466970

申请日：2012-05-08

申请人： Qing Dai ,  Bruno Marchon ,  Katsumi Mabuchi ,  Mina Amo

发明人： Qing Dai ,  Bruno Marchon ,  Katsumi Mabuchi ,  Mina Amo

IPC分类号： G11B5/72 ,  B32B9/00 ,  B05D5/12 ,  G11B21/02

CPC分类号： G11B5/84 ,  B32B9/00 ,  G11B5/72 ,  G11B5/746 ,  G11B5/8412 ,  G11B5/855

摘要： In one embodiment, a magnetic recording medium includes a magnetic recording layer including a magnetic material characterized by having convex and concave portions, the convex portions acting as magnetic regions, a nonmagnetic material positioned within each concave portion of the magnetic material which act as nonmagnetic regions that separate the magnetic regions, an organic material layer which exhibits a corrosion-inhibiting characteristic with respect to cobalt or cobalt alloy positioned on a nonmagnetic region side of each concave portion, and an oxide layer and/or hydroxide layer positioned adjacent the organic material layer on a magnetic region side of each concave portion of the magnetic material. In another embodiment, the magnetic recording medium may be a patterned recording layer having a protective film, and the oxide layer and/or hydroxide layer may be positioned at least in defect portions of the protective film.

摘要翻译： 在一个实施例中，磁记录介质包括磁记录层，该磁记录层包括磁性材料，其特征在于具有凸部和凹部，凸部作为磁区，位于磁性材料的每个凹部内的非磁性材料作为非磁性区 分离磁性区域，相对于位于每个凹部的非磁性区域侧的钴或钴合金表现出腐蚀抑制特性的有机材料层和邻近有机材料层定位的氧化物层和/或氢氧化物层 在磁性材料的每个凹部的磁性区域侧。 在另一个实施例中，磁记录介质可以是具有保护膜的图案化记录层，并且氧化物层和/或氢氧化物层可至少位于保护膜的缺陷部分中。

公开(公告)号：US20130194693A1

公开(公告)日：2013-08-01

申请号：US13361896

申请日：2012-01-30

申请人： Mina Amo ,  Katsumi Mabuchi ,  Hiroshi Yoshida ,  Bruno Marchon ,  Qing Dai

发明人： Mina Amo ,  Katsumi Mabuchi ,  Hiroshi Yoshida ,  Bruno Marchon ,  Qing Dai

IPC分类号： G11B21/02 ,  C07D403/14 ,  C07D249/18 ,  C07D403/12 ,  G11B5/65 ,  G11B5/725

CPC分类号： C07D249/18 ,  C07D403/12 ,  C07D403/14 ,  G11B5/725

摘要： According to one embodiment, a lubricant includes a perfluoropolyether having a chemical structure of wherein Rf is at least one of —CF2O(CF2CF2O)m(CF2O)nCF2— and —CF2CF2O(CF2CF2CF2O)kCF2CF2—, with m representing 0 or a positive integer, n representing 0 or a positive integer, and k representing 0 or a positive integer, and wherein R1 to R4 are selected from a group consisting of —H or with at least one of R1 to R4 being

摘要翻译： 根据一个实施方案，润滑剂包括具有以下化学结构的全氟聚醚，其中Rf为-CF 2 O（CF 2 CF 2 O）m（CF 2 O）n CF 2 - 和-CF 2 CF 2 O（CF 2 CF 2 CF 2 O）k CF 2 CF 2 - 中的至少一种，m表示0或正整数 ，n表示0或正整数，k表示0或正整数，并且其中R 1至R 4选自-H或与R 1至R 4中的至少一个为

公开(公告)号：US07002768B2

公开(公告)日：2006-02-21

申请号：US10683811

申请日：2003-10-09

申请人： Bruno Marchon ,  Qing Dai ,  Ferdinand Hendriks ,  Ullal Vasant Nayak

发明人： Bruno Marchon ,  Qing Dai ,  Ferdinand Hendriks ,  Ullal Vasant Nayak

IPC分类号： G11B21/02 ,  G11B17/00 ,  G11B15/46

CPC分类号： G11B19/28 ,  G11B19/04

摘要： A disk drive having a layer of lubricant on a disk surface, where an undesirable lubricant layer thickness modulation is reduced by varying ω/f during operation of the disk drive. Here ω is the angular velocity of the disk and f is a resonant frequency of a head assembly containing the head. In this manner, the amplitude of the lubricant thickness modulation is decreased, improving disk drive performance. The ratio ω/f is preferably varied by varying the disk angular velocity ω.

摘要翻译： 一种在盘表面上具有润滑剂层的磁盘驱动器，其中通过在磁盘驱动器的操作期间改变ω/ f来减少不期望的润滑剂层厚度调制。 这里，ω是磁盘的角速度，f是包含磁头的磁头组件的共振频率。 以这种方式，润滑剂厚度调制的幅度减小，从而提高磁盘驱动性能。 比值ω/ f优选通过改变盘角速度ω而变化。

公开(公告)号：US20050068660A1

公开(公告)日：2005-03-31

申请号：US10676734

申请日：2003-09-30

申请人： David Braunstein ,  Qing Dai ,  Bruno Marchon

发明人： David Braunstein ,  Qing Dai ,  Bruno Marchon

IPC分类号： G11B5/00 ,  G11B5/60 ,  G11B27/36 ,  G11B21/02 ,  G11B5/02

CPC分类号： G11B5/6005 ,  G11B5/455 ,  G11B27/36 ,  G11B2005/001 ,  G11B2220/20

摘要： A method is presented for measuring the height of an air-bearing separating a flying component from a rotating surface using physical deformation of a small amount of material deposited on the surface. One embodiment of the invention is a method of measuring the fly-height of a slider using physical deformation of material deposited on the disk. Small amounts of the deformable material such as a viscoelastic lubricant are placed on a limited area of the disk so that the slider can otherwise fly normally. The slider's fly-height is established over the unaltered portion of the disk, then the slider impacts the deformable material. This process results in the deformable material being flattened or removed above the fly-height of the slider. The height of the remaining material is then measurable as the fly-height.

摘要翻译： 提出了一种用于通过沉积在表面上的少量材料的物理变形来测量使飞行部件与旋转表面分离的空气轴承的高度的方法。 本发明的一个实施例是使用沉积在盘上的材料的物理变形来测量滑块的飞行高度的方法。 少量的可变形材料例如粘弹性润滑剂被放置在盘的有限区域上，使得滑块可否以正常方式飞行。 滑块的飞行高度建立在盘的未改变的部分上，然后滑块冲击可变形材料。 该过程导致可变形材料在滑块的飞行高度之上被平坦化或去除。 然后剩余材料的高度可以作为飞行高度被测量。