公开(公告)号：US4657813A

公开(公告)日：1987-04-14

申请号：US714282

申请日：1985-03-21

申请人： Takamitsu Asai ,  Masaaki Fujiyama

发明人： Takamitsu Asai ,  Masaaki Fujiyama

IPC分类号： C09D5/23 ,  C09D7/12 ,  G11B5/706 ,  G11B5/714

CPC分类号： G11B5/714 ,  G11B5/70673 ,  G11B5/70678 ,  Y10S428/90 ,  Y10T428/256 ,  Y10T428/257

摘要： A magnetic recording medium is described, comprising a non-magnetic support having provided thereon a magnetic layer containing magnetic particles and a binder, wherein the magnetic particles comprise (1) ferromagnetic hexagonal crystallized tabular shape particles having an axis of easy magnetization in a direction vertical to the tabular plane thereof and (2) ferromagnetic ellipsoidal particles having an acicular ratio (length/width) of 1.5/1 to 10/1 and having a saturation magnetization of 60 emu/g or more.

摘要翻译： 描述了一种磁记录介质，其包括在其上设置有包含磁性颗粒和粘合剂的磁性层的非磁性载体，其中所述磁性颗粒包括（1）在垂直方向上具有容易磁化轴的铁磁六方晶系结晶的平板状颗粒 （2）具有1.5 / 1〜10/1的针状比（长/宽），饱和磁化强度为60emu / g以上的铁磁性椭圆体颗粒。

公开(公告)号：US4656088A

公开(公告)日：1987-04-07

申请号：US768608

申请日：1985-08-23

申请人： Fumihiro Tokunaga ,  Takamitsu Asai ,  Masaaki Fujiyama

发明人： Fumihiro Tokunaga ,  Takamitsu Asai ,  Masaaki Fujiyama

IPC分类号： G11B5/706 ,  C09D5/23 ,  C09D7/12 ,  G11B5/708

CPC分类号： G11B5/708 ,  Y10S428/90 ,  Y10T428/25 ,  Y10T428/256 ,  Y10T428/257 ,  Y10T428/258

摘要： A magnetic recording medium is disclosed. The medium comprises a non-magnetic support having provided thereon a magnetic layer comprising a binder, a magnetic powder and a powder of an oxide represented by the formula:M-1.multidot.M-2.multidot.O.sub.2+xwherein M-1 is at least one of barium, strontium, lead and calcium; M-2 is at least one member of titanium, zirconium and tin; and x represents a number of from 0 to 0.9. The medium has a high S/N ratio and improved wear resistance and causes only moderate wear of a magnetic head.

摘要翻译： 公开了一种磁记录介质。 介质包括非磁性载体，其上设置有包含粘合剂，磁性粉末和由下式表示的氧化物粉末的磁性层：M-1×2M-2xO2 + x，其中M-1是钡， 锶，铅和钙; M-2是钛，锆和锡中的至少一种; x表示0〜0.9的数。 该介质具有高的S / N比和改进的耐磨性，并且仅导致磁头的适度的磨损。