| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for manufacturing a magnetic transfer master disk, capable of reducing the size of a burr generated during the punching of a master substrate as much as possible so as to prevent adhesion to a slave disk from being damaged, and a magnetic recording medium to which good information is magnetically transferred. SOLUTION: In the punching process of a master substrate 11, a punching tool 40 constituted of a fixed blade 42 and a moving blade 45 is used to move the moving blade 45 or the fixed blade 42 relatively to the metal board 18 toward the backside from the front side of the metal board 18 in which a recessed and projected pattern P is formed, thereby the metal board 18 is punchced into the master substrate 11 of a predetermined shape. COPYRIGHT: (C)2006,JPO&NCIPI
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