Magneto-optical recording medium
    1.
    发明申请
    Magneto-optical recording medium 审中-公开
    磁光记录介质

    公开(公告)号:US20050030838A1

    公开(公告)日:2005-02-10

    申请号:US10492094

    申请日:2002-10-01

    IPC分类号: G11B11/105 G11B7/007 G11B7/24

    摘要: A magneto-optical recording medium for MSR reproduction of a high signal quality wherein both faces of a land and a groove are used as recording tracks is disclosed. A magneto-optical recording medium wherein both of a land portion and a groove portion on a substrate are used as recording and reproduction tracks while laser light having passed through an objective lens is illuminated on the recording and reproduction tracks is configured that a ratio Wg/Wl between a track width (Wg) of the groove portion and a track width (Wl) of the land portion is equal to or higher than 0.65 but equal to or lower than 0.85, and, where the wavelength of the laser light is represented by λ, the numerical aperture of the objective lens by NA and the refractive index of the substrate by n, the groove distance Gp is equal to or greater than 1.0×λ/NA but equal to or smaller than 1.2×λ/NA and besides the depth D of the groove is equal to or greater than λ/11 n but equal to or smaller than λ/8 n.

    摘要翻译: 公开了一种用于MSR再现高信号质量的磁光记录介质,其中使用焊盘和凹槽的两个面作为记录磁道。 一种磁光记录介质,其中基板上的接地部分和凹槽部分都用作记录和再现轨道,同时通过物镜的激光照射在记录和再现轨道上,被配置为比率Wg / 槽部的轨道宽度(Wg)与焊盘部的轨道宽度(W1)之间的宽度W1为0.65以上且0.85以下,激光的波长表示为 lambda,物镜的数值孔径由NA和折射率 衬底指数为n,槽距Gp等于或大于1.0x lambda / NA,但等于或小于1.2x lambda / NA,此外凹槽的深度D等于或大于 lambda / 11 n,但等于或小于 lambda / 8 n。

    Optical recording medium
    5.
    发明授权
    Optical recording medium 失效
    光记录介质

    公开(公告)号:US07502308B2

    公开(公告)日:2009-03-10

    申请号:US10741291

    申请日:2003-12-19

    IPC分类号: G11B7/24

    摘要: An optical recording medium has spirally or concentrically formed tracks and capable of an optical recording. The optical recording medium includes a data recording and reproducing area divided into a plurality of zones in the radial direction. One zone is divided into a plurality of sectors respectively having an address area including pits having address information and a data are in which data is only present in grooves. The number of sectors forming each zone is different. An optical disc is formed so that an average reflectance Iadd of the address part and an average reflectance Idata of the data part satisfy a relation expressed by 0.7≦(Iadd/Idata)≦1.3 or 0.8≦(Iadd/Idata)≦1.2.

    摘要翻译: 光学记录介质具有螺旋状或同心圆形的轨迹并能够进行光学记录。 光学记录介质包括在径向方向上分成多个区域的数据记录和再现区域。 一个区域被分成多个扇区,分别具有包括具有地址信息的凹坑的地址区域和数据仅存在于凹槽中的数据。 形成每个区域的扇区数量是不同的。 形成光盘,使得地址部分的平均反射率Iadd和数据部分的平均反射率Idata满足由0.7 <=(Iadd / Idata)<= 1.3或0.8 <=(Iadd / Idata)< = 1.2。

    Preheat bulk erasing device for phase-change type optical disk
    6.
    发明授权
    Preheat bulk erasing device for phase-change type optical disk 有权
    相变式光盘预热批量擦除装置

    公开(公告)号:US07643382B2

    公开(公告)日:2010-01-05

    申请号:US11252018

    申请日:2005-10-17

    IPC分类号: G11B11/00

    摘要: When carrying out magnetization, annealing, and initialization of a recording film by applying a laser beam to the recording film while rotating an optical recording medium 10 by a motor 11, light of a strong visible-light lamp 15 is projected as parallel light to a reflecting mirror 14 via a lens 16 so as to apply light reflected by the reflecting mirror 14 to an area wider than a spot of the laser beam on the medium 10 for heating. At that time, a control unit 18 controls an intensity of the strong visible-light lamp 15 to raise a temperature of the medium 10 to a temperature of 80° C. or higher and a softening point of a substrate or lower, for example.

    摘要翻译: 当通过用马达11旋转光学记录介质10而将激光束施加到记录膜上来进行记录膜的磁化,退火和初始化时,强可见光灯15的光作为平行光投射到 通过透镜16反射镜14,以将由反射镜14反射的光施加到比介质10上的加热用激光束的光斑宽的区域。 此时,控制单元18控制强可见光灯15的强度,以使介质10的温度升高到例如80℃以上的温度和基板的软化点以下。

    Preheating bulk erasing device for magneto-optical disk
    7.
    发明授权
    Preheating bulk erasing device for magneto-optical disk 有权
    预热用于磁光盘的批量擦除装置

    公开(公告)号:US07193933B2

    公开(公告)日:2007-03-20

    申请号:US10381157

    申请日:2002-07-15

    IPC分类号: G11B11/00

    摘要: When carrying out magnetization, annealing, and initialization of a recording film by applying a laser beam to the recording film while rotating an optical recording medium 10 by a motor 11, light of a strong visible-light lamp 15 is projected as parallel light to a reflecting mirror 14 via a lens 16 so as to apply light reflected by the reflecting mirror 14 to an area wider than a spot of the laser beam on the medium 10 for heating. At that time, a control unit 18 controls an intensity of the strong visible-light lamp 15 to raise a temperature of the medium 10 to a temperature of 80° C. or higher and a softening point of a substrate or lower, for example.

    摘要翻译: 当通过用马达11旋转光学记录介质10而将激光束施加到记录膜上来进行记录膜的磁化,退火和初始化时,强可见光灯15的光作为平行光投射到 通过透镜16反射镜14,以将由反射镜14反射的光施加到比介质10上的加热用激光束的光斑宽的区域。 此时,控制单元18控制强可见光灯15的强度,以使介质10的温度升高到例如80℃以上的温度和基板的软化点以下。

    Preheating bulk erase device for optical recording medium, preheating bulk erase method for optical recording medium, and optical recording medium
    8.
    发明申请
    Preheating bulk erase device for optical recording medium, preheating bulk erase method for optical recording medium, and optical recording medium 有权
    用于光学记录介质的预热散装擦除装置,用于光学记录介质的预热批量擦除方法和光学记录介质

    公开(公告)号:US20060098536A1

    公开(公告)日:2006-05-11

    申请号:US11252018

    申请日:2005-10-17

    IPC分类号: G11B11/00

    摘要: When carrying out magnetization, annealing, and initialization of a recording film by applying a laser beam to the recording film while rotating an optical recording medium 10 by a motor 11, light of a strong visible-light lamp 15 is projected as parallel light to a reflecting mirror 14 via a lens 16 so as to apply light reflected by the reflecting mirror 14 to an area wider than a spot of the laser beam on the medium 10 for heating. At that time, a control unit 18 controls an intensity of the strong visible-light lamp 15 to raise a temperature of the medium 10 to a temperature of 80° C. or higher and a softening point of a substrate or lower, for example.

    摘要翻译: 当通过用马达11旋转光学记录介质10而将激光束施加到记录膜上来进行记录膜的磁化,退火和初始化时,强可见光灯15的光作为平行光投射到 通过透镜16反射镜14,以将由反射镜14反射的光施加到比介质10上的加热用激光束的光斑宽的区域。 此时,控制单元18控制强可见光灯15的强度,以使介质10的温度升高到例如80℃以上的温度和基板的软化点以下。