Patent ID: 6197477
Filing Date: 2001-03-06
Classification: G11B,Y10S

Abstract:
An optical recording material comprising a substrate and a recording layer which is formed overlying the substrate, wherein the recording layer comprises an azo chelate compound comprising an azo compound and at least one of a metal and a metal salt and wherein the azo compound has the following formula (1): ##STR45##wherein R1, R2 and R3 independently represent a hydrogen atom, a halogen atom, a nitro group, a cyano group, a hydroxy group, a carboxyl group, an amino group, a carbamoyl group, an alkyl group which may be substituted, an aryl group which may be substituted, a heterocyclic group which may be substituted, an alkyloxy group which may be substituted, an aryloxy group which may be substituted, an alkylamino group which may be substituted, an arylamino group which may be substituted, an alkyloxycarbonyl group which may be substituted, an aryloxycarbonyl group which may be substituted, an alkylcarbonylamino group which may be substituted, an arylcarbonylamino group which may be substituted, an alkylcarbamoyl group which may be substituted, an arylcarbamoyl group which may be substituted or an alkenyl group which may be substituted; R4 and R5 independently represent a hydrogen atom, an alkyl group which may be substituted or an aryl group which may be substituted, wherein R1 and R2, R2 and R4, R2 and R5, R3 and R4, R3 and R5, and R4 and R5 may combine to form a ring; X1 represents a group of R6 or SR7, wherein R6 represents a hydrogen atom, a halogen atom, a nitro group, a cyano group, a hydroxy group, a carboxyl group, an alkyl group which may be substituted, a phenyl group which may be substituted, an alkoxy group which may be substituted, an aryloxy group which may be substituted, a carbamoyl group which may be substituted, an acyl group which may be substituted, an alkoxycarbonyl group which may be substituted, an aryloxycarbonyl group which may be substituted, an alkenyl group which may be substituted or an amino group which may be substituted, and R7 represents a hydrogen atom, an alkyl group which may be substituted, or an aryl group which may be substituted; X2 represents a group of R8, SR9, OR10 or NR11R12, wherein R8 represents the same groups as mentioned above for use as R6, R9 represents an alkyl group which may be substituted, and R10, R11 and R12 independently represent an alkyl group which may be substituted or an aryl group which may be substituted; and Z represents a group having active hydrogen.