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Patent Searching and Data


Title:
OPTICAL INFORMATION RECORDING MEDIUM AND ITS PRODUCTION
Document Type and Number:
Japanese Patent JPH09115191
Kind Code:
A
Abstract:

To obtain an optical disk of a multilayered structure having excellent accuracy and productivity.

A substrate 4 and a stamper 21 are superposed on each other interposing a radiation-curing resin 22 between them and, thereafter, the substrate 4 and the stamper 21 are rotated at a high speed. This radiation-curing resin 22 applied on the central part is spread to the outer peripheral part by the centrifugal force of rotation and, further, the excess radiation-curing resin 22 is shaken off toward the outer side and is removed from the end face of the substrate 4 and the stamper 21. Then, a transparent resin layer which has a uniform film thickness and does not contain air bubbles is formed by a uniform outward force in the horizontal direction by the centrifugal force of a high-speed rotation with a short time production process.


Inventors:
KONDO TETSUYA
Application Number:
JP29201395A
Publication Date:
May 02, 1997
Filing Date:
October 13, 1995
Export Citation:
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Assignee:
VICTOR COMPANY OF JAPAN
International Classes:
B29D17/00; G11B7/24; G11B7/26; (IPC1-7): G11B7/26; B29D17/00; G11B7/24