公开(公告)号：US5285343A

公开(公告)日：1994-02-08

申请号：US595414

申请日：1990-10-11

申请人： Hideaki Tanaka ,  Kenichi Gomi ,  Shoichi Sawahata ,  Maki Kondo ,  Masaki Ohura ,  Norikazu Tsumita ,  Katuo Uda ,  Yoshiki Kato ,  Yoshihiko Miyake ,  Toyoji Okuwaki ,  Noriaki Okamoto ,  Nobuo Nakagawa

发明人： Hideaki Tanaka ,  Kenichi Gomi ,  Shoichi Sawahata ,  Maki Kondo ,  Masaki Ohura ,  Norikazu Tsumita ,  Katuo Uda ,  Yoshiki Kato ,  Yoshihiko Miyake ,  Toyoji Okuwaki ,  Noriaki Okamoto ,  Nobuo Nakagawa

IPC分类号： G11B5/60 ,  G11B5/72 ,  G11B5/82 ,  G11B5/84 ,  G11B23/50 ,  G11B5/74

CPC分类号： B82Y10/00 ,  G11B23/505 ,  G11B5/6005 ,  G11B5/72 ,  G11B5/743 ,  G11B5/82 ,  G11B5/8408

摘要： There is provided a magnetic disk apparatus including at least one magnetic disk having a magnetic layer and a surface protective layer on a substrate; a magnetic head which faces the magnetic disk in a rotating state with a micro gap and is supported by a slider; rotating means for rotating the magnetic disk; and magnetic head positioning means for moving and positioning the magnetic head to a predetermined position on the magnetic disk, wherein a plurality of protrusions each having a flat surface are formed in at least a region on the surface of the magnetic disk where a contact start/stop operation can be executed, an area ratio of the protrusions per 1 mm.sup.2 lies within a range from 0.1 to 80%, a height of the protrusion of the maximum height among the protrusions lies within a range from 5 to 40 nm, and the magnetic layer is formed on the whole surface on the base plate. According to the above magnetic disk apparatus, the frictional force between the disk and the head is small, and the floating height of the head can be reduced, and good floating stability is obtained, so that excellent recording and reproducing characteristics are obtained.

摘要翻译： 提供一种磁盘装置，其包括在基板上具有磁性层和表面保护层的至少一个磁盘; 磁头，其在具有微小间隙的旋转状态下面对磁盘，并由滑块支撑; 用于旋转磁盘的旋转装置; 以及磁头定位装置，用于将磁头移动和定位到磁盘上的预定位置，其中在磁盘表面上的至少一个区域上形成有各自具有平坦表面的多个突起，其中接触开始/ 可以执行停止操作，每1mm 2的突起的面积比在0.1至80％的范围内，突起中的最大高度的突起的高度在5至40nm的范围内，并且磁 在基板上的整个表面上形成层。 根据上述磁盘装置，盘与头部之间的摩擦力小，可以降低头部的浮动高度，并且获得良好的浮动稳定性，从而获得优异的记录和再现特性。