Sputtering target assembly and method for depositing a thickness gradient layer with narrow transition zone
    1.
    发明授权
    Sputtering target assembly and method for depositing a thickness gradient layer with narrow transition zone 失效
    用于沉积具有窄过渡区的厚度梯度层的溅射靶组件和方法

    公开(公告)号:US06569294B1

    公开(公告)日:2003-05-27

    申请号:US09884482

    申请日:2001-06-20

    IPC分类号: C23C1434

    摘要: Selective deposition of a layer of a material, such as a thick protective overcoat, onto a selected substrate area, such as the inner or CSS landing zone, is achieved using a sputtering target assembly comprising a target/cathode having a planar sputtering surface including an erosion track area, a collimating shield positioned proximate the sputtering surface and surrounding at least a portion of the erosion track area, the collimating shield including an inwardly facing wall, and a blocking shield centrally positioned over the surface of the target/cathode and including an outwardly facing wall, wherein the inwardly facing wall of the collimating shield and the outwardly facing wall, wherein the inwardly facing wall of the collimating shield and the outwardly facing wall of the central blocking shield form an open-ended collimating channel for directing sputtered particles onto the selected substrate area.

    摘要翻译: 使用包括具有平面溅射表面的靶/阴极的溅射靶组件来选择性地沉积诸如厚保护外涂层的材料层到所选择的衬底区域(例如内部或CSS着陆区域),溅射靶组件包括平面溅射表面 冲蚀轨道区域,位于溅射表面附近并围绕侵蚀轨迹区域的至少一部分的准直屏蔽,准直屏蔽包括面向内的壁和位于靶/阴极表面上方的阻挡屏蔽, 准直屏蔽面向内的壁和面向外的壁,其中准直屏蔽件的面向内的壁和中央阻挡屏蔽的面向外的壁形成用于引导溅射的颗粒进入的开放式准直通道 所选择的衬底区域。

    Sputtering target assembly and method for depositing a thickness gradient layer with narrow transition zone
    2.
    发明授权
    Sputtering target assembly and method for depositing a thickness gradient layer with narrow transition zone 有权
    用于沉积具有窄过渡区的厚度梯度层的溅射靶组件和方法

    公开(公告)号:US06468405B1

    公开(公告)日:2002-10-22

    申请号:US09615317

    申请日:2000-07-13

    IPC分类号: C23C1434

    摘要: A sputtering target assembly for depositing onto a selected substrate area comprises a target/cathode having a planar sputtering surface including an erosion track area, a collimating shield positioned proximate to the sputtering surface, surrounding at least a portion of the erosion track area, and including an inwardly facing wall, and a blocking shield centrally positioned over the surface of the target/cathode and including an outwardly facing wall, wherein the inwardly facing wall of the collimating shield and the outwardly facing wall of the central blocking shield form an open-ended channel for directing sputtered particles onto the selected substrate area. A method for utilizing the target assembly for selectively depositing a thicker protective overcoat layer on the inner CSS or landing zone relative to the outer data zone of disk-shaped recording media is provided.

    摘要翻译: 用于沉积到所选择的衬底区域上的溅射靶组件包括具有包括侵蚀轨迹区域的平面溅射表面的靶/阴极,位于溅射表面附近的准直屏蔽件,围绕侵蚀轨迹区域的至少一部分,并且包括 一个向内的壁和一个位于靶/阴极表面上方并包括向外的壁的阻挡屏蔽,其中准直屏蔽的向内的壁和中心阻挡屏蔽的面向外的壁形成开放端 用于将溅射的颗粒引导到所选择的基底区域上的通道。 提供了一种利用目标组件相对于盘形记录介质的外部数据区选择性地在内部CSS或着陆区上沉积更厚的保护性外涂层的方法。

    Glide test head with active fly height control

    公开(公告)号:US06366416B1

    公开(公告)日:2002-04-02

    申请号:US09497370

    申请日:2000-02-03

    IPC分类号: G11B502

    摘要: An apparatus and method for evaluating surface characteristics of a recording disc prior to incorporation into a disc drive. A glide test system includes a glide test head supportable over the disc, the glide test head having a negative-pressure air bearing slider and a contact sensor which outputs a signal when the glide test head contacts a feature of the disc surface. The glide test head and the disc are characterized as opposing plates of a variable capacitor with a dielectric layer therebetween including at least a layer of air supporting the glide test head. A voltage source, operably coupled to the glide test head and the disc, applies a fly height control voltage across the capacitor to adjust the fly height of the glide test head. The disc surface preferably comprises a data region configured to magnetically store data as the disc is rotated and a texturized landing zone configured to support the disc drive read/write head when the disc is stopped. The voltage source accordingly applies a first fly height control voltage to maintain the glide test head at a first glide distance over the data region and a second fly height control voltage to maintain the glide test head at a second, greater glide distance over the landing zone.

    Laser textured magnetic surface micro-ridges/grooves to enhance magnetic recording performance
    4.
    发明授权
    Laser textured magnetic surface micro-ridges/grooves to enhance magnetic recording performance 失效
    激光纹理磁性表面微脊/沟槽,增强磁记录性能

    公开(公告)号:US06320728B1

    公开(公告)日:2001-11-20

    申请号:US09311358

    申请日:1999-05-13

    IPC分类号: G11B582

    CPC分类号: G11B5/82 B23K26/0823

    摘要: A magnetic data storage medium is provided that has a substrate surface with regularly spaced, continuous ridges and grooves thereby to enhance the magnetic layer crystallization orientation. Data storage tracks extend longitudinally along the ridges, the grooves between adjacent ridges providing separation between data tracks on either side of each ridge. To form the substrate surface a focused laser beam is continuously applied to the substrate in a path of generally circumferential direction on the disk surface between inner and outer radii of a data storage zone while the substrate is rotated at a relatively constant first speed and the focused beam is moved radially at a relatively constant second speed.

    摘要翻译: 提供磁数据存储介质,其具有具有规则间隔的连续脊和凹槽的基板表面,从而增强磁层结晶取向。 数据存储轨道沿着脊部纵向延伸,相邻脊之间的沟槽提供每个脊的任一侧的数据轨道之间的间隔。 为了形成衬底表面,聚焦的激光束在数据存储区的内半径和外半径之间的盘表面的大致圆周方向的路径上连续地施加到衬底,同时衬底以相对恒定的第一速度旋转,并且聚焦 光束以相对恒定的第二速度径向移动。

    Method for laser-scribing brittle substrates and apparatus therefor
    6.
    发明授权
    Method for laser-scribing brittle substrates and apparatus therefor 失效
    激光划片脆性基板的方法及其设备

    公开(公告)号:US06787732B1

    公开(公告)日:2004-09-07

    申请号:US10228066

    申请日:2002-08-27

    IPC分类号: B23K2636

    摘要: A method of separating a sheet of a brittle material into portions by means of laser-scribing, comprising steps of: (a) providing a sheet of a brittle material having first and second opposing major surfaces separated by a thicknesst; (b) providing a source of laser energy adjacent said first surface, adapted for supplying a focussed beam of laser energy converging to a focal spot in a plane parallel to the first surface; (c) irradiating the sheet of brittle material with the focussed beam of laser energy, the plane of the focal spot of the beam initially being positioned within the sheet just below the first surface; and (d) continuing irradiating while simultaneously providing relative movement between the focal spot of the laser beam and the sheet to move the focal spot at a pre-selected rate and path extending over the first surface, and moving the depth of the plane of the focal spot at a pre-selected rate through a major portion of thickness t of the sheet to form a micro-crack zone extending along the pre-selected path from just below the first surface to a shallow depth just below the second surface.

    摘要翻译: 一种通过激光划线将脆性材料片分离成部分的方法,包括以下步骤:(a)提供具有由厚度分隔的第一和第二相对主表面的脆性材料片;(b)提供 与所述第一表面相邻的激光能量源,适于提供聚焦于与所述第一表面平行的平面中的焦斑的激光能量的聚焦束;(c)用所述聚焦激光能束照射所述脆性材料片, 梁的焦点的平面最初位于第一表面正下方的片材内; 和(d)继续照射,同时在激光束的焦斑和片材之间提供相对运动,以便以预先选择的速率和在第一表面上延伸的路径移动焦点,并且移动 焦点以片材的厚度t的大部分以预先选定的速率形成微裂纹区域,该微裂纹区域沿着从第一表面的正下方延伸到刚好在第二表面正下方的浅深度的预选路径延伸。

    Combined laser-scribing and laser-breaking for shaping of brittle substrates
    7.
    发明授权
    Combined laser-scribing and laser-breaking for shaping of brittle substrates 有权
    组合激光划线和激光破碎用于成形脆性基板

    公开(公告)号:US06744009B1

    公开(公告)日:2004-06-01

    申请号:US10227751

    申请日:2002-08-27

    IPC分类号: B23K2614

    摘要: A method of segmenting a sheet of a brittle material, comprising sequential steps of: subjecting the sheet to a first laser-based process to form a laser-scribing line extending from a surface of the sheet to a first depth below the surface; subjecting the sheet to a second laser-based process to form a laser-breaking line extending from the laser-scribing line at the first depth below the surface to a second, greater depth below the surface; and segmenting the sheet along the thus-formed combined laser scribing + laser-breaking line.

    摘要翻译: 一种分割脆性材料片的方法,包括以下顺序的步骤:对片材进行基于第一激光的工艺,以形成从片材的表面延伸到表面下方的第一深度的激光划线; 以形成从激光刻划线在表面下方的第一深度延伸到表面下方较深的第二深度处的激光断裂线; 并沿着如此形成的组合激光划线+激光断裂线分割片材。

    Method of making a magnetic recording medium with laser-formed differential zone lubrication
    8.
    发明授权
    Method of making a magnetic recording medium with laser-formed differential zone lubrication 有权
    制造具有激光形成差动区润滑的磁记录介质的方法

    公开(公告)号:US06221442B1

    公开(公告)日:2001-04-24

    申请号:US09311366

    申请日:1999-05-13

    IPC分类号: B05D300

    摘要: Stiction failure of a magnetic recording medium is reduced by forming a lubricant topcoat having a first thickness over the landing zone greater than a second thickness over the data zone, with a sharp transition step having an angle of at least about 70° with respect to a line perpendicular to the surface. Embodiments include depositing a lubricant topcoat at a substantially uniform thickness and reducing the thickness of the lubricant topcoat over the data zone by about 20% to about 80% employing a laser light beam to volatilize the lubricant.

    摘要翻译: 通过在数据区上形成大于第二厚度的着陆区上的第一厚度的润滑剂外涂层,通过形成具有至少约70°的角度的尖锐过渡步骤来减少磁记录介质的静摩擦故障 线垂直于表面。 实施例包括以基本均匀的厚度沉积润滑剂面漆,并使用激光束将润滑剂外涂层的数量区域减少大约20%至大约80%,使润滑剂挥发。

    Reference disk for determining glide height
    9.
    发明授权
    Reference disk for determining glide height 失效
    用于确定滑翔高度的参考盘

    公开(公告)号:US5956217A

    公开(公告)日:1999-09-21

    申请号:US919204

    申请日:1997-08-28

    IPC分类号: G11B5/60 G11B5/82 G11B33/10

    CPC分类号: G11B5/6005 G11B5/82 G11B33/10

    摘要: A reference disk, used to determine the glide height of a transducer head above the surface of a magnetic recording medium, is accurately formed by employing a laser light beam to produce protrusions on the reference disk. The protrusions can be formed in a variety of effective patterns to obtain a stable electrical signal. Embodiments include circumferential rows of uniformly or randomly spaced protrusions.

    摘要翻译: 用于通过使用激光束在参考盘上产生突起来精确地形成用于确定磁记录介质表面之上的换能器头的滑行高度的参考盘。 突起可以以各种有效图案形成以获得稳定的电信号。 实施例包括均匀或随机间隔的突起的圆周排。