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US 4,405,706 AGranted
Optical information recording medium
AssigneeFuji Photo Film Co., Ltd.
InventorsYonosuke Takahashi, Minoru Wada, Eiichi Hasegawa
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Abstract
An optical information recording medium is disclosed. The medium is comprised of a plastic substrate made of acrylic resin, an undercoating comprised at least one of polyvinyl pyrrolidone and polyvinyl formal on the substrate, and a heat mode recording layer comprised of metal on the undercoating. The recording medium has improved adhesion between the recording layer and the substrate without decreasing the sensitivity of the recording layer.
Claims19
An optical information recording medium, comprising:
- a plastic substrate comprised of an acrylic resin;
- an undercoating layer positioned on a surface of the substrate, the undercoating layer being comprised of a compound selected from the group consisting of polyvinyl pyrrolidone and polyvinyl formal;
- and
- a heat mode recording layer positioned on the undercoating layer, the recording layer being comprised of a metal.
1 more element
Dependencies are inferred from the claim text.