The present invention provides an ink for use in inkjet printing which can be cured by irradiation of radiant ray, characterized in that said ink for use in inkjet printing contains at least a colorant, a polymerizable compound and a photopolymerization initiator, further including a compound capable of forming a complex with a metal, as well as a method for making a lithographic printing plate that doesn't need a development process using said ink, and such plate can solve the foregoing problem. The ink of the present invention for use in inkjet printing has an excellent adhesion between the ink cured by irradiation of radiant ray and a printing medium, as well as a lithographic printing plate using it and a method for making such plate.