To provide a printing ink which suppresses shrinkage of such rubber goods on a printing machine as an ink roller, a blanket and the like, and also suppresses thickening and sticking of an ink on an ink/water transfer roller at printing, to thereby give a stable and high-quality printed matter.

The printing ink comprises a hydrocarbon solvent having the content of a polycyclic aromatic hydrocarbon having at least three rings of less than 3 mass%, and an epoxydized vegetable oil.