Patent ID: 8404036

Claim:
A coloring matter represented by the following formula (1) or a salt thereof, wherein, Nc represents naphthalocyanine which may have a substituent; M represents a metal atom, a metal oxide, a metal hydroxide or a metal halide that serves as a central metal of naphthalocyanine represented by Nc, or a hydrogen atom; R 1 and R 2 each independently represent a hydrogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted aralkyl group, or a substituted or unsubstituted aryl group; A represents a crosslinking group; X and Y each independently represent a halogen atom, a hydroxy group, an amino group, a substituted or unsubstituted alkoxy group, a substituted or unsubstituted aryloxy group, a substituted or unsubstituted aralkyloxy group, a substituted or unsubstituted monoalkylamino group, a substituted or unsubstituted dialkylamino group, a substituted or unsubstituted arylamino group, a substituted or unsubstituted aralkylamino group, a substituted or unsubstituted alkylthio group, a substituted or unsubstituted arylthio group, or a substituted or unsubstituted aralkylthio group; both k and p are a mean value, k is greater than 0 and no greater than 12, p is no less than 0 and less than 12, and the sum of k and p is greater than 0 and no greater than 12; and any two among R 1 , R 2 , and A may be joined to form a ring.