Recordable optical recording medium

摘要

A recordable optical recording medium is provided enabling reliably preventing the deterioration of the recording characteristics, even when stored for a long period of time in an environment of high temperature and humidity. A recordable optical recording medium includes a substrate, and on the substrate, a reflective layer, a recording layer, a protective layer, a light transmission layer in a single layer structure having optical transparency, and a hard coat layer. The recording layer is formed by addition of an additive which functions as reducing agent to an azo metal complex dye having a triazole structure.

主权项

1. A recordable optical recording medium comprising:
a substrate having thereon at least a reflective layer; a recording layer formed by an organic dye;and
a light transmission layer;the organic dye having
an azo metal complex dye and an additive added to the azo metal complex dye; the azo metal complex dye having a triazole structure represented by the following general formula: in which R is a functional group selected from the group consisting of hydrogen, C1-C4 alkyl, benzyl, diethylamido, halogen, trifluoromethyl, methoxy, thiomethyl and N,N-diethyl carbamoyl; M is a metal atom selected from the group consisting of nickel, cobalt and copper; the cyclic part of the general formula (1) is made of carbon, oxygen and hydrogen atoms; and the cyclic part of the general formula (1) has a structure represented by one of following general formulae (a) to (j), (l), and (q):