Stock material or miscellaneous articles – Circular sheet or circular blank – Recording medium or carrier
Patent
1989-06-19
1991-06-04
Ryan, Patrick J.
Stock material or miscellaneous articles
Circular sheet or circular blank
Recording medium or carrier
428 65, 428412, 428522, 428913, 346 76L, 3461351, 369288, B32B 302
Patent
active
050212761
ABSTRACT:
An optical data recording medium having a recording layer with or without an underlayer layered on a transparent substrate, wherein said recording layer is composed of a difficult-to-dissolve-in-water organic dye type material on which a thin layer composed of a surface active polymer as a hydrophilic material, which is denaturated by cross-linking.
REFERENCES:
patent: 4101907 (1978-07-01), Bell et al.
patent: 4448827 (1984-05-01), Luijben et al.
patent: 4735839 (1988-04-01), Sato et al.
Fujiwara Hideo
Iuchi Shin-ichiro
Kamezaki Hisamitsu
Saito Osamu
Suenaga Masashi
Hitachi Maxell Ltd.
Ryan Patrick J.
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