公开(公告)号：US4464433A

公开(公告)日：1984-08-07

申请号：US357300

申请日：1982-03-11

申请人： Kenji Hirabayashi ,  Hitoshi Azegami

发明人： Kenji Hirabayashi ,  Hitoshi Azegami

IPC分类号： G11B5/70 ,  G11B5/706 ,  B32B15/00 ,  B05D5/12

CPC分类号： G11B5/70 ,  G11B5/70673 ,  Y10T428/263 ,  Y10T428/265

摘要： A magnetic recording medium which has dynamic range (I) of 70 dB or more and dynamic range (II) of 45 dB or more in control of a thickness of a magnetic layer and magnetic characteristics wherein said dynamic range (I) is given as a difference between an output at 3% input level of third harmonic wave output at a wavelength of 237.5 .mu.m in the optimum bias recording by a head having a recorded width of 1 to 1.1 mm based on an output of the original signal and a reproduced output calibrated by auditory sense calibration at non-signal recording in the bias and said dynamic range (II) is given as a difference between a saturated output at a wavelength of 4.75 .mu.m under the same condition and the reproduced output calibrated by the A-curve calibration at non-signal recording in the bias.

摘要翻译： 具有70dB以上的动态范围（I）和45dB或更大的动态范围（II）的磁记录介质，用于控制磁性层的厚度和磁特性，其中所述动态范围（I）被给定为 基于原始信号的输出，记录宽度为1〜1.1mm的磁头在最佳偏置记录中，波长为237.5μm的三次谐波输出的3％输入电平的输出之间的差值，再生输出 通过在偏置下的非信号记录下的听觉校准校准，并且所述动态范围（II）被给定为在相同条件下波长4.75μm的饱和输出与通过A曲线校准的再现输出之间的差 校准在非信号记录的偏差。