公开(公告)号：US5235478A

公开(公告)日：1993-08-10

申请号：US625487

申请日：1990-12-11

申请人： Susumu Hoshimi ,  Hiroyuki Suzukawa

发明人： Susumu Hoshimi ,  Hiroyuki Suzukawa

IPC分类号： G11B5/55 ,  G11B5/596 ,  G11B21/08

CPC分类号： G11B5/59655 ,  G11B21/085 ,  G11B5/5556

摘要： A disc drive apparatus with a tracking servomechanism, comprising at least one disc medium having data surfaces where servo signal and data signal are recorded; transducer means having a first head for reproducing the data signal from the data tracks in a playback mode, and a second head for recording the data signal on the data tracks in a recording mode; a rotary arm for supporting the transducer means at one end thereof; actuator motor means for driving the rotary arm in a manner to move the transducer means over the data tracks; servo signal processing means for receiving and processing the servo signal reproduced by the transducer means and outputting first and second servo control signals; and positioning control means for controlling the actuator motor means in the playback and recording modes respectively in accordance with the first and second servo control signals so that the first head of the transudcer means is positioned precisely on any selected one of the data tracks in the playback mode and also that the second head is positioned precisely on any selected one of the data tracks in the recording mode.

公开(公告)号：US4901178A

公开(公告)日：1990-02-13

申请号：US14535

申请日：1987-02-13

申请人： Tomio Kobayashi ,  Iwao Abe ,  Kazuo Kashiwa ,  Yukihiro Aizawa ,  Hiroyuki Suzukawa

发明人： Tomio Kobayashi ,  Iwao Abe ,  Kazuo Kashiwa ,  Yukihiro Aizawa ,  Hiroyuki Suzukawa

IPC分类号： G11B5/31 ,  G11B5/48 ,  G11B5/147

CPC分类号： G11B5/3103 ,  G11B5/31 ,  G11B5/3116 ,  G11B5/3163 ,  G11B5/488 ,  Y10T29/49044 ,  Y10T29/49064

摘要： A thin film magnetic head whereby the inclined surface is formed with a prescribed angle relative to the upper surface of the substrate in the vicinity of a slide contact surface thereof with a magnetic recording medium, the magnetic gap is formed on the magnetic film on the inclined surface, and the azimuth of the magnetic gap is set by the inclined surface.By forming grooves or protrusions on the substrate, the inclined surface by which the azimuth of the magnetic gap is set is defined. A coil conductor is formed on the flat portion of the upper surface of the substrate.With the thin film magnetic head presented by this invention, a double azimuth thin film magnetic head of a multi-channel thin film magnetic head can be easily provided.

摘要翻译： 一种薄膜磁头，其中倾斜表面在与磁记录介质的滑动接触表面附近相对于基板的上表面以规定角度形成，磁性间隙形成在倾斜的磁性膜上 表面，并且磁隙的方位角由倾斜表面设定。 通过在基板上形成凹槽或凸起，限定设置磁隙的方位角的倾斜面。 线圈导体形成在基板的上表面的平坦部分上。 利用本发明的薄膜磁头，可以容易地提供多通道薄膜磁头的双方位薄膜磁头。