Magnetic recording medium manufacturing method
    1.
    发明授权
    Magnetic recording medium manufacturing method 有权
    磁记录介质制造方法

    公开(公告)号:US08173029B2

    公开(公告)日:2012-05-08

    申请号:US12725403

    申请日:2010-03-16

    IPC分类号: B44C1/22

    CPC分类号: G11B5/855 C08F220/18

    摘要: According to one embodiment, a cured first ultraviolet-curing resin material layer having a first three-dimensional pattern is formed on a first principal surface of a magnetic recording medium having a central hole. A cured second ultraviolet-curing resin material layer having a second three-dimensional pattern is formed on a second principal surface opposite to the first principal surface of the magnetic recording.

    摘要翻译: 根据一个实施方案,在具有中心孔的磁记录介质的第一主表面上形成具有第一三维图案的固化的第一紫外线固化树脂材料层。 在与磁记录的第一主表面相对的第二主表面上形成具有第二三维图案的固化的第二紫外线固化树脂材料层。

    Repeatable runout evaluation method for a stamper
    2.
    发明授权
    Repeatable runout evaluation method for a stamper 失效
    压模的可重复跳动评估方法

    公开(公告)号:US08159767B2

    公开(公告)日:2012-04-17

    申请号:US12538718

    申请日:2009-08-10

    IPC分类号: G11B5/86

    CPC分类号: G11B5/865 G11B5/855

    摘要: According to one embodiment, a stamper has three-dimensional patterns in a dummy region. The three-dimensional patterns have a repeatable run out of 1 nm or less between the 15th and 40th orders when the rotational frequency is the first order as a reference.

    摘要翻译: 根据一个实施例,压模在虚拟区域中具有三维图案。 当旋转频率是第一级作为参考时,三维图案在15和40次之间具有1nm或更小的可重复运行。

    STAMPER, STAMPER TESTING METHOD, AND STAMPER TESTING APPARATUS
    7.
    发明申请
    STAMPER, STAMPER TESTING METHOD, AND STAMPER TESTING APPARATUS 审中-公开
    冲压器,冲压器测试方法和冲压器测试装置

    公开(公告)号:US20100148095A1

    公开(公告)日:2010-06-17

    申请号:US12538638

    申请日:2009-08-10

    IPC分类号: H01L33/00 B29C35/08

    CPC分类号: G11B5/855

    摘要: According to one embodiment, a stamper has a data area and servo area, and has concentric or spiral grooves formed in the data area. Phases αE and αH at which differential signal levels of the E- and H-polarized light are maximum when the data area is irradiated with a laser beam have a relationship represented by (αE+αH)≦270°

    摘要翻译: 根据一个实施例,压模具有数据区域和伺服区域,并且在数据区域中形成有同心或螺旋形凹槽。 当用激光束照射数据区时,E-偏振光和H偏振光的差分信号电平最大的相位αE和αH具有由(αE+αH)&nlE表示的关系; 270°

    STAMPER
    8.
    发明申请
    STAMPER 失效
    压模

    公开(公告)号:US20100143517A1

    公开(公告)日:2010-06-10

    申请号:US12538718

    申请日:2009-08-10

    IPC分类号: B29D17/00

    CPC分类号: G11B5/865 G11B5/855

    摘要: According to one embodiment, a stamper has three-dimensional patterns in a dummy region. The three-dimensional patterns have a repeatable run out of 1 nm or less between the 15th and 40th orders when the rotational frequency is the first order as a reference.

    摘要翻译: 根据一个实施例,压模在虚拟区域中具有三维图案。 当旋转频率是第一级作为参考时,三维图案在15和40次之间具有1nm或更小的可重复运行。

    Stamper and stamper evaluation method
    9.
    发明授权
    Stamper and stamper evaluation method 失效
    压模和压模评估方法

    公开(公告)号:US08454869B2

    公开(公告)日:2013-06-04

    申请号:US12571682

    申请日:2009-10-01

    IPC分类号: B29C45/76

    CPC分类号: G11B7/266 Y10T428/21

    摘要: According to one embodiment, this invention determines whether a maximum value Hmax and minimum value Hmin of an HF signal obtained when a data recording portion is irradiated with a laser having a wavelength of 450 nm or less and an NA of 0.6 or more meet (Hmax−Hmin)/Hmax

    摘要翻译: 根据一个实施例,本发明确定当用波长为450nm或更小且NA为0.6或更大的激光照射数据记录部分时获得的HF信号的最大值Hmax和最小值Hmin满足(Hmax -Hmin)/ Hmax <0.13。 。 。 (1),或者当用具有450nm以下的波长的激光照射数据记录部分时获得的HF信号的信号电平的最大值Hmax,最小值Hmin和最频繁的电压值Have 0.6以上的NA达到Hmax / Have@1.05。 。 。 (2)和Hmin/Have@0.90。 。 。 (3)。