Method of manufacturing optical disk

Details Method of manufacturing optical disk Method of manufacturing optical disk

1991-05-15

1992-03-17

Tufariello, T. M.

Electrolysis: processes, compositions used therein, and methods

Electroforming or composition therefor

Recording device

264 13, 264 25, C25D 110, B29D 1100

Patent

active

050965638

ABSTRACT:
An optical disk manufacturing method comprises a step of preparing a master disk having an elastomer layer, formed on a transparent substrate and containing photosensitive dyes, and a polymer support layer, formed on the elastomer layer and having a glass transition temperature; a step of forming minute bumps on the master disk by irradiation of a focusing laser beam; a step of forming a metal layer on that surface of the master disk which has the minute bumps; and a step of forming a stamper layer on that surface of the master disk which is rendered conductive, thereby forming a stamper. According to another optical disk manufacturing method, the metal stamper forming step is replaced with a step of forming a transfer layer, made of a transparent ultraviolet-ray hardening resin, on that surface of the master disk which has the minute bumps, thereby forming a resin stamper.

REFERENCES:
patent: 5015338 (1991-05-01), Tabuchi

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