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    • 62. 发明授权
    • Magnetic recording medium and method of making the same
    • 磁记录介质及其制作方法
    • US6029895A
    • 2000-02-29
    • US244437
    • 1999-02-04
    • Masahiro ItoShohei MimuraMasao ShigetaTsutomu Chou
    • Masahiro ItoShohei MimuraMasao ShigetaTsutomu Chou
    • G06K19/06
    • G06K19/06196
    • A magnetic recording medium, and a method of making the same, including an irreversible recording layer which undergoes an irreversible change of saturation magnetization upon heating. The magnetic recording medium includes on at least a portion of a substrate an irreversible recording layer which contains an irreversible recording material undergoing an irreversible change of saturation magnetization upon heating. The irreversible recording layer includes at least in part a fixed information recording region for recording the fixed information of the medium. In the fixed information recording region, a plurality of heated bars whose saturation magnetization has been irreversibly changed are arrayed substantially parallel to each other. The array pattern of the heated bars or the array pattern of unheated bars disposed between adjacent ones of the heated bars contains the fixed information encoded in a frequency modulation process or phase modulation process.
    • 一种磁记录介质及其制造方法,包括在加热时经受饱和磁化强度的不可逆变化的不可逆记录层。 磁记录介质在衬底的至少一部分上包括不可逆记录层,其含有在加热时经历饱和磁化强度的不可逆变化的不可逆记录材料。 不可逆记录层至少部分地包括用于记录介质的固定信息的固定信息记录区域。 在固定信息记录区域中,饱和磁化强度已经不可逆地改变的多个加热棒彼此基本平行排列。 设置在相邻加热棒之间的加热棒的阵列图案或未加热棒的阵列图案包含以频率调制过程或相位调制过程编码的固定信息。