摘要 |
PURPOSE:To obtain an optical recording medium having excellent characteristics and being advantageous on an economical basis, by providing a recording layer comprising a specified phthalocyanine coloring matter on a transparent substrate. CONSTITUTION:A recording layer comprising a phthalocyanine coloring matte(of formula 1 is provided on a transparent substrate. In formula 1, Pc is a phthalocyanine residue, M is a metal or a nucleus of a metallic oxide or halide, A is -COO-, -CH2NR'-,-CR2NHCOCH2NH-, -SO2NR'- or -CONR'-(where R' is hydrogen or 1-20C satd. or unsatd alkyl), each of m and n is independently an integer of 1-4, and each of R1 and R2 is independently hydrogen or a substd. or unsubstd. alkyl, or R1 and R2 to form a heterocyclic ring containing at least nitrogen atom. Fixation of the recording layer comprising the phthalocyanine coloring matter onto the transparent substrate is most preferably performed by a coating method. |