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Patent Searching and Data


Title:
MANUFACTURE OF OPTICAL RECORDING MEDIUM
Document Type and Number:
Japanese Patent JPH0714222
Kind Code:
A
Abstract:

PURPOSE: To manufacture an optical recording medium having a protective layer for sufficiently protecting a reflecting layer and maintaining its reflectivity by controlling the cure shrinkage of the protective layer containing an ultraviolet curing resin within a specific range.

CONSTITUTION: An optical recording medium is formed by successively forming a recording layer 2, reflecting layer 3, and protective layer 4 on a substrate 1. The protective layer 4 for protecting the reflecting layer 3 contains an ultraviolet curing resin, and the cure shrinkage X of the layer 4 is controlled to 6%≤X≤10% by adjusting the irradiating amount with ultraviolet rays. The protective layer serves to sufficiently protect the reflecting layer 3 and maintain its reflectivity.


Inventors:
YAMADA SHINGETSU
UEMATSU TAKUYA
Application Number:
JP15551393A
Publication Date:
January 17, 1995
Filing Date:
June 25, 1993
Export Citation:
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Assignee:
MITSUBISHI PLASTICS IND
MITSUBISHI CHEM CORP
International Classes:
G11B7/26; G11B7/24; G11B7/254; G11B7/257; (IPC1-7): G11B7/26; G11B7/24
Attorney, Agent or Firm:
Yoshikazu Tani (1 person outside)