MULTILAYER RECORDING MEDIUM FOR OPTICAL INFORMATION AND COMPOSITE SYSTEM COMPOSED OF THE MEDIUM AND MANUFACTURE OF MULTILAYER RECORDING MEDIUM

摘要

PURPOSE: To obtain a multilayered recording medium having high recording sensitivity, base line reflectance and stability by forming a binder layer between a base body and a naphthalocyanine dye layer. CONSTITUTION: This optical multilayered recording medium essentially consists of a base body and one layer of an unsatd. naphthalocyanine dye, and a binder layer is formed between the base body and the naphthalocyanine dye layer. The one surface of the base body T has concentric or helical track grooves formed by injection molding or photopolymn. The unsatd. naphthalocyanine dye is a compd. expressed by formula I. In formula I, Me represents two hydrogen atoms or metals such as Cu, Zn, Al, Ga, In, Si, G, Sn, Pb, Mg, Ti, V, Cr, Mn, Fe, Co, Ni and Pd. Thereby, the obtd. multilayered recording medium has high recording sensitivity, base line reflectance and stability.