| abstract |
PROBLEM TO BE SOLVED: To provide an easy-to-handle light fastness improving agent which improves light fastness without substantially impairing the light absorption properties of styryl dyes, and a use thereof. A styryl dye containing a azo-based organometallic complex in which one or more azo compounds are bonded to a metal atom has a light resistance improving agent, and light absorption comprising the light resistance improving agent and a styryl dye. The object is achieved by providing an optical recording medium comprising an agent and either a light resistance improving agent or a light absorbing agent. |