Optical information recording medium
AssigneeMatsushita Electrical Industrial Co., Ltd.
InventorsKeiji Nishikiori, Eiji Ohno
Life of this patent
Estimating the term…
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AssigneeMatsushita Electrical Industrial Co., Ltd.
InventorsKeiji Nishikiori, Eiji Ohno
Estimating the term…
An optical information recording medium of the present invention includes: a substrate with at least one selected from the group consisting of a groove and a pit formed on one surface thereof; at least one information layer provided on the surfaces of the substrate, the information layer including at least one selected from the group consisting of a recording film and a reflective film; a resin layer provided on the information layer; and a light transmission layer provided on the resin layer. The resin layer includes a first resin film and a second resin film disposed in this order from the side of the light transmission layer, and when a water absorption rate of the first resin film is represented by A1 and a water absorption rate of the second resin film is represented by A2, A1 and A2 satisfy: A1>A2. The first resin film and the second resin film may have a different flexural modulus of elasticity.
An optical information recording medium, comprising:
An optical information recording medium, comprising:
Dependencies are inferred from the claim text.