Magnetic recording-reproducing apparatus
    4.
    发明申请
    Magnetic recording-reproducing apparatus 有权
    磁记录再现装置

    公开(公告)号:US20050036225A1

    公开(公告)日:2005-02-17

    申请号:US10944882

    申请日:2004-09-21

    摘要: A magnetic recording-reproducing apparatus has a magnetic recording medium having a nonmagnetic substrate, and a functional layer and a recording layer formed on the nonmagnetic substrate, the recording layer exhibiting a magnetic anisotropy energy density KuRL, the functional layer developing ferromagnetism upon irradiation with light so as to exhibit a magnetic anisotropy energy density KuFL lower than the magnetic anisotropy energy density KuRL and the functional layer serving to lower the magnetic anisotropy energy density of the recording layer through exchange coupling interaction with the recording layer when the functional layer is irradiated with light, a light source which irradiates the functional layer with light, and a magnetic head having a writing head writing signal magnetization by applying a magnetic field to the recording layer and a reading head reading the signal magnetization recorded in the recording layer.

    摘要翻译: 磁记录再现装置具有具有非磁性基板的磁记录介质和形成在非磁性基板上的功能层和记录层,记录层呈现磁各向异性能量密度KuRL,功能层在照射光时显现出铁磁性 以便表现出低于磁各向异性能量密度KuRL的磁各向异性能量密度KuFL以及当功能层被光照射时通过与记录层的交换耦合相互作用来降低记录层的磁各向异性能量密度的功能层 ,用光照射功能层的光源,以及具有通过向记录层施加磁场而具有写入信号磁化的写入头的磁头以及读取记录在记录层中的信号磁化的读取头。

    Magnetic recording-reproducing apparatus
    5.
    发明授权
    Magnetic recording-reproducing apparatus 有权
    磁记录再现装置

    公开(公告)号:US07054087B2

    公开(公告)日:2006-05-30

    申请号:US10944882

    申请日:2004-09-21

    IPC分类号: G11B5/02 G11B5/66

    摘要: A magnetic recording-reproducing apparatus has a magnetic recording medium having a nonmagnetic substrate, and a functional layer and a recording layer formed on the nonmagnetic substrate, the recording layer exhibiting a magnetic anisotropy energy density KuRL, the functional layer developing ferromagnetism upon irradiation with light so as to exhibit a magnetic anisotropy energy density KuFL lower than the magnetic anisotropy energy density KuRL and the functional layer serving to lower the magnetic anisotropy energy density of the recording layer through exchange coupling interaction with the recording layer when the functional layer is irradiated with light, a light source which irradiates the functional layer with light, and a magnetic head having a writing head writing signal magnetization by applying a magnetic field to the recording layer and a reading head reading the signal magnetization recorded in the recording layer.

    摘要翻译: 磁记录再现装置具有磁记录介质,其具有非磁性基板,以及在非磁性基板上形成的功能层和记录层,所述记录层呈现磁各向异性能量密度Ku <! - SIPO 的功能层,而功能层用于降低 当功能层被光照射时通过与记录层的交换耦合相互作用的记录层的磁各向异性能量密度,用光照射功能层的光源以及具有写入头写入信号磁化的磁头通过施加 记录层的磁场和读取记录在记录层中的信号磁化的读取头。

    Magnetic recording-reproducing apparatus
    7.
    发明授权
    Magnetic recording-reproducing apparatus 失效
    磁记录再现装置

    公开(公告)号:US06930847B2

    公开(公告)日:2005-08-16

    申请号:US10236931

    申请日:2002-09-09

    摘要: A magnetic recording-reproducing apparatus has a magnetic recording medium having a nonmagnetic substrate, and a functional layer and a recording layer formed on the nonmagnetic substrate, the recording layer exhibiting a magnetic anisotropy energy density KuRL, the functional layer developing ferromagnetism upon irradiation with light so as to exhibit a magnetic anisotropy energy density KuFL lower than the magnetic anisotropy energy density KuRL and the functional layer serving to lower the magnetic anisotropy energy density of the recording layer through exchange coupling interaction with the recording layer when the functional layer is irradiated with light, a light source which irradiates the functional layer with light, and a magnetic head having a writing head writing signal magnetization by applying a magnetic field to the recording layer and a reading head reading the signal magnetization recorded in the recording layer.

    摘要翻译: 磁记录再现装置具有磁记录介质,其具有非磁性基板,以及在非磁性基板上形成的功能层和记录层,所述记录层呈现磁各向异性能量密度Ku <! - SIPO 的功能层,而功能层用于降低 当功能层被光照射时通过与记录层的交换耦合相互作用的记录层的磁各向异性能量密度,用光照射功能层的光源以及具有写入头写入信号磁化的磁头通过施加 记录层的磁场和读取记录在记录层中的信号磁化的读取头。

    Optical recording medium, optical recording and/or reproducing method, and optical recording and/or reproducing system
    10.
    发明授权
    Optical recording medium, optical recording and/or reproducing method, and optical recording and/or reproducing system 失效
    光学记录介质,光学记录和/或再现方法以及光学记录和/或再现系统

    公开(公告)号:US06826144B1

    公开(公告)日:2004-11-30

    申请号:US09648475

    申请日:2000-08-25

    IPC分类号: G11B700

    摘要: An optical recording medium comprises a superresolution film which has a light transmittance varying in accordance with the intensity of incident light and which has a superresolution function for optically masking part of incident light to form an optical aperture having a smaller size than a spot size of incident light, the superresolution film including at least two kinds of superresolution films having different response times until the superresolution function occurs after being irradiated with light. Thus, it is possible to easily and surely reduce the light spot size to greatly enhance the recording density. In addition, it is possible to extend the operating wavelength range by providing at least two kinds of superresolution films having different operating wavelengths causing the superresolution function.

    摘要翻译: 光学记录介质包括具有根据入射光强度而变化的光透射率的超分辨膜,其具有用于光学地掩蔽部分入射光以形成具有比入射光斑大小更小的光学孔径的超分辨率功能 光,超分辨率膜包括至少两种具有不同响应时间的超分辨率膜,直到在用光照射之后发生超分辨函数。 因此,可以容易且可靠地减小光斑尺寸,大大提高记录密度。 此外,通过提供具有不同工作波长的至少两种超分辨率膜,可以延长工作波长范围,导致超分辨率功能。