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    • 1. 发明授权
    • Magnetic transcription device
    • 磁转录装置
    • US06785070B2
    • 2004-08-31
    • US10007416
    • 2001-12-03
    • Kouji TaniguchiKaoru MatsuokaTaizou HamadaHideyuki HashiYasuaki BanTatsuaki Ishida
    • Kouji TaniguchiKaoru MatsuokaTaizou HamadaHideyuki HashiYasuaki BanTatsuaki Ishida
    • G11B586
    • G11B5/865G11B5/59633G11B23/505
    • A magnetic transcription device for transcribing information signals of a master information carrier in a magnetic recording medium by applying a magnetic field generated by magnetic field generating means to a contact body obtained by contacting the master information carrier having a base on which ferromagnetic bodies corresponding to the information signals are formed with a magnetic recording medium having a ferromagnetic layer, wherein the magnetic recording medium includes driving means for adjusting a distance between the magnetic field generating means and the contact body while rotating the magnetic field generating means relative to the contact body. Accordingly, an external magnetic field can be applied and removed for transcription of the information signals of the master information carrier in the magnetic recording medium while rotating the magnetic field generating means relative to the contact body, so that the deterioration of reproduction signals from the magnetic recording medium can be prevented.
    • 一种磁转录装置,用于通过将由磁场产生装置产生的磁场施加到磁场产生装置上的磁场来转录主信息载体的信息信号,该接触体通过使具有基底的主信息载体接触而获得, 信息信号由具有铁磁层的磁记录介质形成,其中磁记录介质包括用于在磁场产生装置相对于接触体旋转的同时调节磁场产生装置和接触体之间的距离的驱动装置。 因此,在使磁场产生装置相对于接触体旋转的同时,可以施加和去除外部磁场以转录磁记录介质中的主信息载体的信息信号,从而使来自磁性的再现信号的恶化 可以防止记录介质。
    • 2. 发明授权
    • Method for recording magnetic recording medium
    • 记录磁记录介质的方法
    • US06646820B1
    • 2003-11-11
    • US09869947
    • 2001-07-03
    • Tatsuaki IshidaTaizou HamadaHideyuki HashiKeizo MiyataYasuaki BanHiromi Kita
    • Tatsuaki IshidaTaizou HamadaHideyuki HashiKeizo MiyataYasuaki BanHiromi Kita
    • G11B586
    • G11B5/865G11B5/127G11B5/23G11B5/82
    • A master information carrier (2) with an arranged pattern formed of a ferromagnetic film in a shape corresponding to information signals is superposed on a magnetic recording medium (1) and the arranged pattern formed of a ferromagnetic film is magnetized with a magnetizing head (6), thus transfer-recording the arranged pattern into the magnetic recording medium as a magnetized pattern. The magnetizing head includes an annular magnetic circuit with a gap, and a strength of a magnetic field applied to the master information carrier by magnetic flux leaking from portions other than the gap is set to be 20% or less of that of a magnetic field applied to the master information carrier by magnetic flux leaking from the gap. Quality deterioration due to various conditions during recording can be prevented and uniform recording with less variation depending on position on the magnetic recording medium is achieved.
    • 具有与信息信号相对应的铁磁膜形成的排列图案的主信息载体(2)叠加在磁记录介质(1)上,由铁磁膜形成的排列图案被磁化头(6 ),从而将布置的图案作为磁化图案转印记录到磁记录介质中。 磁化头包括具有间隙的环形磁路,并且通过从除了间隙之外的部分泄漏的磁通量施加到主信息载体的磁场强度设定为施加的磁场的磁场强度的20%以下 通过磁通从主信息载体泄漏出来。 可以防止由记录期间的各种条件导致的质量劣化,并且实现根据磁记录介质上的位置具有较小变化的均匀记录。