Method for producing a disk-shaped substrate and method for producing an 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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Bibliographic Details
Main Authors HISADA KAZUYA, HAYASHI KAZUHIRO, OHNO EIJI
Format Patent
LanguageEnglish
Published 05.09.2006
Subjects
APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL
CHEMISTRY
COMPOSITIONS BASED THEREON
INFORMATION STORAGE
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER
MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
PERFORMING OPERATIONS
PHYSICS
PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TOSURFACES, IN GENERAL
SPRAYING OR ATOMISING IN GENERAL
THEIR PREPARATION OR CHEMICAL WORKING-UP
TRANSPORTING
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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.
Bibliography:Application Number: US20020258702