发明名称 MANUFACTURE OF MAGNETIC DISK
摘要 PURPOSE:To improve the surface accuracy and high quantity and to improve the recording sensitivity by orientating magnetic powder in a prescribed direction and transferring the state of the surface of a flat board having a smooth face. CONSTITUTION:The flat board 4 subject to release processing having flatness requested to a magnetic disk is prepared and the release processing is applied to the surface of the flat board 4 so as to apply a curing resin component including magnetic powder thinly and uniformly. Then the board is put in a magnetic field to apply a magnetic field in a prescribed direction thereby orientating the magnetic powder and the curing resin is cured. A three dimension cross-linked resin 2 is applied to the surface of a metallic disk 1 separately and the layer oriented and cured with the magnetic powder and a face applied with the three dimension cross-linked resin being uncured are placed oppositely and they are pressed and integrated. After the three dimension cross-linked resin is cured, the board 4 is removed to transfer the oriented magnetic powder and the mixed layer to the metallic disk.
申请公布号 JPS62285230(A) 申请公布日期 1987.12.11
申请号 JP19860128064 申请日期 1986.06.04
申请人 SUMITOMO BAKELITE CO LTD 发明人 SAKAMOTO YUJI;INUI KEITA;NAKAYAMA SHOICHI;SUZUKI SETSUO
分类号 G11B5/855;B32B15/08 主分类号 G11B5/855
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