Method of manufacturing disk substrate, and method and device for manufacturing optical disk
A method for producing a disk-shaped substrate 10 used for producing an optical disk includes: (a) forming a protective layer 12 a that is larger in area than the disk-shaped substrate 10 on a surface of a transparent plate 11 a; and (b) cutting a portion of the plate 11 a with the protective layer...
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Main Authors | , , |
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Format | Patent |
Language | English |
Published |
06.12.2007
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Subjects | |
Online Access | Get full text |
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Summary: | A method for producing a disk-shaped substrate 10 used for producing an optical disk includes: (a) forming a protective layer 12 a that is larger in area than the disk-shaped substrate 10 on a surface of a transparent plate 11 a; and (b) cutting a portion of the plate 11 a with the protective layer 12 a formed thereon other than an outer edge portion of the protective layer 12 a 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. |
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Bibliography: | Application Number: US20070803463 |