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US 2004/0168182 A1Published application
Optical information recording medium
AssigneeFuji Photo Film Co., Ltd.
InventorsTakeshi Kakuta, Toshio Ishida
Life of this patent
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Abstract
An optical information recording medium including a substrate, a recording layer formed on the substrate, and a transparent sheet provided on the recording layer via an adhesive layer. The adhesive layer has a peak of loss modulus at a temperature of 0° C. or lower, and exhibits an E1′/E2′ ratio of 2.0 or less, wherein E1′ and E2′ represent storage moduli of the adhesive layer at 25° C. and 80° C., respectively.
Claims10
An optical information recording medium, comprising a substrate, a recording layer, an adhesive layer, and a transparent sheet provided in this order,
- wherein the adhesive layer has a peak of loss modulus at a temperature of 0° C. or less, and exhibits an E1′/E2′ ratio of 2.0 or less, wherein E1′ and E2′ represent storage moduli of the adhesive layer at 25° C. and 80° C., respectively.
Dependencies are inferred from the claim text.