JPH0422289B

PURPOSE:To obtain an optical disk having a substrate for an optical disk which is stable and has a long life by providing a thin org. film layer on a substrate consisting of chemically tempered glass. CONSTITUTION:The chemically tempered glass by an ion exchange method and a cellulose acetate film a...

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Bibliographic Details
Main Authors TERAO MOTOYASU, YONEZAWA SEIJI, SHIGEMATSU KAZUO, HORIGOME SHINKICHI, MYAMURA YOSHINORI
Format Patent
LanguageEnglish
Published 16.04.1992
Subjects
INFORMATION STORAGE
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER
PHYSICS
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Summary:PURPOSE:To obtain an optical disk having a substrate for an optical disk which is stable and has a long life by providing a thin org. film layer on a substrate consisting of chemically tempered glass. CONSTITUTION:The chemically tempered glass by an ion exchange method and a cellulose acetate film as a soft thin org. material film are preliminarily prepd. A methyl acetate 2 is poured into a metallic mold 1 to uniformly wet the mold and a cellulose acetate sheet 3 is stuck thereto. An epoxy adhesive agent 4 is coated thereon and the chemically tempered glass 5 is stuck thereto. The mold 1 is stripped from one end and such substrate is put into a vacuum vapor deposition device where an As-Te-Se recording film 8 is deposited by evaporation on the cellulose acetate layer 2. A spacer 6 is stuck thereto and the chemically tempered glass 7 for protection which is the same in thickness, inside diameter and outside diameter is stuck thereto.
Bibliography:Application Number: JP19860258205