发明名称 Mfg. miniature magnetic head for tape recorder - forming two similar substrates, one having coil wound in undercut chamber slot
摘要 <p>The first step in the prodn. of the magnetic head (1) is the application of a thin layer (5) of soft magnetic material on the side of a non-magnetic substrate (4). This layer is the main pole piece of the magnetic circuit. An auxiliary pole-piece (6) is then produced attached using a masking layer (7). Adhesive layers (8a, 8b) are then used to attached the second substrate part (3). The second substrate part is similar to the first except that it has a coil chamber slot (9) undercut into the side nearest the junction. A stepped slope (11) is then cut into the side furthest from the junction, and a V shaped slot (10) cut into the upper face. The coil (13) is then wound onto the second substrate (3) and the remaining cavity is filled with enamel (12).</p>
申请公布号 NL8802354(A) 申请公布日期 1990.04.17
申请号 NL19880002354 申请日期 1988.09.26
申请人 N.V. PHILIPS' GLOEILAMPENFABRIEKEN TE EINDHOVEN. 发明人
分类号 G11B5/127 主分类号 G11B5/127
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