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Patent Searching and Data


Title:
OPTICAL INFORMATION RECORDING MEDIUM
Document Type and Number:
Japanese Patent JPS5996544
Kind Code:
A
Abstract:

PURPOSE: To reduce the power of a recording medium for recording by regulating the total amount of components with ≤about 400 low mol.wt. such as a monomer and an oligomer remaining in a substrate to a specified wt% or more.

CONSTITUTION: The total amount of components with ≤about 400 low mol.wt. present in a substrate is finally regulated to ≥0.8wt%. The components include additives such as a mold releasing agent, a polymn. initiator, a mol.wt. regulator, a stabilizer, a lubricant and a plasticizer, low molecular components remaining in the substrate such as a monomer and an oligomer, and substances stuck to a molded body as the substrate. A vapor-deposited Sb2Se3 layer of 350 thickness is formed as a recording layer 12 on a PMMA substrate 11 of 1.2mm thickness obtd. by injection molding, and on the layer 12, a vapor-deposited Bi2Ti3 layer of 492 thickness is formed as a reflecting layer 13 to obtain an optical information recording medium 14.


Inventors:
ARAKAWA NORIYUKI
AKIYAMA YUUJI
MAKINO HIROSHI
Application Number:
JP20580282A
Publication Date:
June 04, 1984
Filing Date:
November 24, 1982
Export Citation:
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Assignee:
SONY CORP
International Classes:
B41M5/26; G11B7/24; G11B7/24047; G11B7/241; G11B7/2433; G11B7/2533; G11B7/2534; (IPC1-7): B41M5/26; G11C13/04
Domestic Patent References:
JPS5532298A1980-03-06
JPS57172547A1982-10-23
JPS5727494A1982-02-13
JPS5766538A1982-04-22
JPS57123208A1982-07-31
JP38005288A
JPS5386756A1978-07-31
JPS5794946A1982-06-12
Attorney, Agent or Firm:
Sada Ito (1 person outside)