halogen atom or a bond with the poly(meth)acrylate moiety, m is an integer of 0 to 4, provided that one of Rs in the phthalocyanine group represents the bond with the poly(meth)acrylate moiety, R1 represents a hydrogen atom or a methyl group, A represents a hydrogen atom, a C1-12 alkyl group, a hydroxyC1-12 alkyl group or a glycerol group, and n is an integer sufficient to substantially prevent el