Dynamic information storage or retrieval – Storage medium structure – Specified material
Patent
1987-11-16
1990-01-30
Rutledge, L. Dewayne
Dynamic information storage or retrieval
Storage medium structure
Specified material
428634, 428686, 428408, 430271, 430273, 369286, G11B 724
Patent
active
048978299
ABSTRACT:
A cardlike optical recording medium comprises a substrate, a recording layer and a protective layer, wherein an ultra-hard film containing a carbon atom is provided at least on the side of said optical recording medium on which a laser beam for writing-reproducing is irradiated.
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Hirabayashi Keiji
Ikoma Keiko
Itoh Susumu
Kurihara Noriko
Canon Kabushiki Kaisha
Rutledge L. Dewayne
Wyszomierski George
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