Method of manufacturing disc

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...

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Bibliographic Details
Main Author KAZUHIRO HAYASHI,KAZUYA HISADA,EIJI OHNO
Format Patent
LanguageEnglish
Published 29.08.2007
Subjects
APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL
INFORMATION STORAGE
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER
PERFORMING OPERATIONS
PHYSICS
PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TOSURFACES, IN GENERAL
SPRAYING OR ATOMISING IN GENERAL
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 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.
Bibliography:Application Number: CN200410060390