Patent ID: 7014310

Claim:
An inkjet image forming method comprising: jetting an ink hardenable by irradiation with an active ray from an inkjet head onto a recording material while conveying the recording material, the temperature of the ink being controlled so that the viscosity of the ink is 5–25 mPa·s; and irradiating the active ray on the jetted recording material, wherein a total of an input electric power of a light source of the active ray of light is 0.05–20 W/cm, the ink contains a solvent in an amount of 0.1 to 5 weight % based on the total weight of the ink, and the inkjet head has plural nozzles arrayed in a direction perpendicular to the direction at which the recording material is conveyed, and wherein the ink includes at least one compound selected from the oxetane compound, epoxy compound and vinyl ether compound, and a compound which generates the acid by the active ray of light.