Patent ID: 8094360

Claim:
A salt composed of a silver salt and a compound represented by the Formulas (I) or (II), wherein M represents a hydrogen atom, a metal atom, or a quaternary ammonium; Z represents a nitrogen containing heterocyclic ring excluding imidazole rings; n represents 0-5; R 1 represents a hydrogen atom, a halogen atom, an alkyl group, an aryl group, an alkylcarbonamido group, an arylcarbonamido group, an alkylsulfonamido group, an arylsulfonamido group, an alkoxy group, an aryloxy group, an alkylthio group, an arylthio group, an alkylcarbamoyl group, an arylcarbamoyl group, a carbamoyl group, an alkylsulfamoyl group, an arylsulfamoyl group, a sulfamoyl group, a cyano group, an alkylsulfonyl group, an arylsulfonyl group, an alkoxycarbonyl group, an aryloxycarbonyl group, an alkylcarbonyl group, an arylcarbonyl group, an acyloxy group, a carboxyl group, a carbonyl group, a sulfonyl group, an amino group, a hydroxyl group, or a heterocyclyl group; and when n is at least 2, any two or more of R 1 may be same or different and may be joined together to form a condensed ring, R 2 —S—R 3 Formula (II) wherein R 2 and R 3 each represent a substituted or unsubstituted hydrocarbon group, provided that when a ring containing an S atom is formed, an aromatic group is not included, and the atom adjacent to the S atom of R 2 and R 3 is not S, wherein the salt is a molten liquid at room temperature.