发明名称 |
Method for manufacturing disk-substrates for magnetic recording media, disk-substrates for magnetic recording media, method for manufacturing magnetic recording media, magnetic recording media, and magnetic recording device |
摘要 |
A method for manufacturing a magnetic recording medium disk substrate is provided for achieving a magnetic disk having a suitable surface roughness, a high in-plane magnetic anisotropy and a high S/N. The manufacturing method has a texturing process wherein the magnetic recording medium disk substrate is rotated in the circumferential direction while a polishing tape is pressed against the rotating substrate. The polishing tape includes polyester fiber having a fiber diameter of 400 nm to 950 nm, on the surface coming into contact with the substrate. All the while, slurry including abrasive grains including a cluster diamond is supplied to the surfaces of the substrate. The present invention relates to a magnetic recording medium disk substrate produced by the manufacturing method; and a magnetic recording medium at least comprising a magnetic layer on the magnetic recording medium disk substrate and manufacturing method of the magnetic recording medium.
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申请公布号 |
US7780504(B2) |
申请公布日期 |
2010.08.24 |
申请号 |
US20070004505 |
申请日期 |
2007.12.21 |
申请人 |
FUJI ELECTRIC DEVICE TECHNOLOGY CO., LTD.;TEIJIN FIBERS LIMITED |
发明人 |
SAKAGUCHI SHOJI;NAKAMURA HIROYUKI;MATSUO HIDEKI |
分类号 |
C04B35/05;B24B7/00;B24B21/00;B24B37/20;G11B5/706;G11B5/73;G11B5/84 |
主分类号 |
C04B35/05 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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