u2122 isopar v u2122 norpar 12 u2122 norpar 13 u2122 norpar 15 u2122 exxol d40 u2122 exxol d80 u2122 exxol d100 u2122 exxol d130 u2122 and exxol d140 u2122 each sold by exxon corporation teclen n 16 u2122 teclen n 20 u2122 teclen n 22 u2122 nisseki naphthesol l u2122 nisseki naphthesol m u2122 nisseki naphthesol h u2122 0 solvent l u2122 0 solvent m u2122 0 solvent h u2122 nisseki isosol 300 u2122 nisseki isosol 400 u2122 af 4 u2122 af 5 u2122 af 6 u2122 and af 7 u2122 each sold by nippon oil corporation ip solvent 1620 u2122 and ip solvent 2028 u2122 each sold by idemitsu petrochemical co ltd amsco oms u2122 and amsco 460 u2122 each sold by american mineral spirits corp and electron positron new ii purogen hf 100 synthetic terpenes sold by ecolink carrier liquids and other components of the present disclosure are described in u s pat no 6 337 168 u s pat no 6 070 042 and u s pat no 5 192 638 the carrier liquid is about 20 to 95 about 40 to 90 and about 60 to 80 weight of the ink formulation in an embodiment the ink formulation can include a charge adjuvant the charge adjuvant can include but is not limited to barium petronate calcium petronate co salts of naphthenic acid ca salts of naphthenic acid cu salts of naphthenic acid mn salts of naphthenic acid ni salts of naphthenic acid zn salts of naphthenic acid fe salts of naphthenic acid ba salts of stearic acid co salts of stearic acid pb salts of stearic acid.