| abstract |
A water-in-oil type emulsion ink composed of 10-90% by weight of an oil phase and 90-10% by weight of an aqueous phase. The oil phase contains a petroleum solvent having a kinematic viscosity of greater than 6-10 mm2/s at 40 DEG C. and such a carbon content distribution that a naphthenic carbon content CN is at least 34%, an aromatic carbon content CA is 2-20% and a paraffinic carbon content CP is less than 55%. |