Recordable optical recording medium having recording layer containing organic dye
AssigneeTaiyo Yuden Co., Ltd.
InventorsTakuo Kodaira, Isao Matsuda
Life of this patent
Estimating the term…
Abstract
A recordable optical recording medium is provided enabling the light transmission layer to be a single layer, the inhibition of peeling of the recording layer even when stored in high-temperature/high-moisture conditions, and the reduction of degradation of the recording/reproduction characteristics. A recordable optical recording medium provided with a substrate, and, on the substrate in the following order, a reflective layer, a recording layer, a protective layer, and a light transmission layer. The optical recording medium has the recording layer formed thereon using an organic dye obtained by adding a highly waterproof, low hydrophilic organic dye to a triazole-based azo metal complex dye.
Claims11
A recordable optical recording medium, comprising
- a substrate on which at least a reflective layer, a recording layer and a light transmission layer are provided, characterized in that
- the recording layer is formed by adding a low hydrophilic and highly waterproof organic dye to a triazole-based azo metal complex dye represented by the following general formula (1):
- (in the general formula (1), a cyclic part is composed of a carbon atom, an oxygen atom and a hydrogen atom;
- R is a functional group selected from the group consisting of a hydrogen atom, an alkyl group having four or less carbon atoms, a benzyl group, a diethylamido group, a halogen group, a trifluoro methyl group, a methoxy group, a thiomethyl group and N,N-diethyl carbamoyl group;
- the alkyl group may have a straight chain alkyl, branched chain alkyl or cyclic structure;
- and M is a metal atom selected from the group consisting of nickel, cobalt and copper) and using the resultant organic dye to form the recording layer.
Dependencies are inferred from the claim text.