| 摘要 |
PURPOSE:To achieve stabilization of a pigment by a method wherein a metallic chelate compound in a matrix resin is molecularly dispersed with a certain specified density or higher in the matrix resin. CONSTITUTION:The title optical recording medium is basically composed of an expansion layer supported on a substrate, consisting of a resin indicating post rubber elasticity at least at room temperature and a pigment having absorption within a near infrared area, and a retention layer consisting of a resin reversibly varying from a glass state at room temperature to a rubber state at higher temperature than that and a pigment having absorption within a near infrared area. Then, a stabilizer, functionally a singlet oxygen quencher, and a chelate compound as a concrete compound are contained in at least one side of the expansion layer and/or retention layer. The pigment is added to the resin by 5-30phr, preferably by 10-25phr, to be used. Thereby, stabilization of the pigment can be achieved. |
