发明名称 |
METHOD OF MANUFACTURING DISK SUBSTRATE, AND METHOD AND DEVICE FOR MANUFACTURING OPTICAL DISK |
摘要 |
A method for producing a disk-shaped substrate 10 used for producing an optical disk includes: (a) forming a protective layer 12a that is larger in area than the disk-shaped substrate 10 on a surface of a transparent plate 11a; and (b) cutting a portion of the plate 11a with the protective layer 12a formed thereon other than an outer edge portion of the protective layer 12a to form a disk shape. According to this producing method, a thin substrate can be prevented from being damaged by forming a protective layer. Furthermore, according to this producing method, a protective layer with a uniform thickness can be formed. <IMAGE> |
申请公布号 |
EP1296319(A1) |
申请公布日期 |
2003.03.26 |
申请号 |
EP20010922072 |
申请日期 |
2001.04.24 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
HAYASHI, KAZUHIRO;HISADA, KAZUYA;OHNO, EIJI |
分类号 |
B05D3/12;B05D5/06;G11B7/24;G11B7/24038;G11B7/26;G11B11/105 |
主分类号 |
B05D3/12 |
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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