Patent ID: 7682773

Claim:
An optical recording medium comprising an optical recording layer coated upon a substrate together with a reflective layer or a UV cured protective layer, wherein the recording layer comprises a cyanine compound having a decomposition temperature of less than 192.8 degrees C. and represented by general formula (I) below: wherein each of ring A and ring B represents an optionally substituted benzene or naphthalene ring; each of R1and R2 independently represents an alkyl group having 1 to 4 carbon atoms or an optionally substituted benzyl group; at least one of R1 and R2 is an optionally substituted benzyl group; X represents S; each of Y, Y 1 , and Y 2 independently represents a hydrogen atom or an organic group having 1 to 30 carbon atoms; Z represents a hydrogen atom, a halogen atom, or a cyano group; An m- represents an m-valent anion; m represents an integer of 1 or 2; and p represents a coefficient to keep an electric charge neutral.