Stock material or miscellaneous articles – Circular sheet or circular blank – Recording medium or carrier
Patent
1987-03-27
1989-05-30
Robinson, Ellis P.
Stock material or miscellaneous articles
Circular sheet or circular blank
Recording medium or carrier
428 65, 428913, 430271, 430321, 430285, 430288, 430945, 369288, 346 76L, 3461351, B32B 302, G03C 1495, G11B 584
Patent
active
048350273
ABSTRACT:
An optical disc wherein a transparent base plate is made from a special light-curable resin composition comprising at least one compound of the formula: ##STR1## wherein R.sub.1 =H or methyl and n=0-5, and a photopolymerization initiator, is excellent in heat resistance, mechanical strength, moisture resistance, etc.
REFERENCES:
patent: 4355093 (1982-10-01), Hartmann et al.
patent: 4442302 (1984-04-01), Pohl
patent: 4446549 (1984-05-01), Lippits et al.
patent: 4500629 (1985-02-01), Irving et al.
patent: 4619890 (1986-10-01), Molaire et al.
Horigome Shinkichi
Miwa Hiroaki
Sudo Ryoichi
Tajima Tetsuo
Hitachi , Ltd.
Hitachi Maxell Ltd.
Robinson Ellis P.
Ryan P. J.
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