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公开(公告)号:US4200678A
公开(公告)日:1980-04-29
申请号:US891541
申请日:1978-03-30
申请人: Philipp Pister , Franz Buettner , Fritz Hammon , Manfred Ohlinger , Heinz Stritzinger , Job-Werner Hartmann , Walter Schneider
发明人: Philipp Pister , Franz Buettner , Fritz Hammon , Manfred Ohlinger , Heinz Stritzinger , Job-Werner Hartmann , Walter Schneider
CPC分类号: G11B5/716 , Y10S428/90 , Y10T428/257
摘要: A flexible multilayer magnetic recording medium exhibiting an improved signal-to-print-through ratio coupled with an improved maximum output level and diminished dc noise, comprising a non-magnetic base and, applied thereto, at least two superposed layers consisting of a binder with magnetizable particles uniformly dispersed therein, the upper magnetic layer containing a magnetic pigment giving a signal-to-print-through ratio of less than 55db and the lower magnetic layer(s) containing a magnetic pigment giving a signal-to-print-through ratio of 55 db or more.
摘要翻译: 一种柔性多层磁记录介质,其具有改善的信号与打印比,并且具有改善的最大输出电平和减小的直流噪声,包括非磁性基底,并施加至少两个由粘合剂组成的叠加层, 可磁化颗粒均匀地分散在其中,上部磁性层含有磁性颜料,其信号与打印通过率小于55db,下部磁性层含有磁性颜料,给出信号与打印通过率 为55db以上。