IMAGE-FORMING METHOD

摘要

An image-forming method that comprises: a process of discharging a radiation-curable inkjet ink, which contains a photopolymerizable compound, a photopolymerization initiator, and a gelling agent and which undergoes a phase transition depending on the temperature, on a recording medium; and a process of curing the radiation-curable inkjet ink discharged on the recording medium by irradiating active radiation thereon. The method performs the irradiation with the active radiation so that the maximum illuminance at the surface of the recording medium is 2-5 W/cm2 and in the distribution of illuminance in the irradiated region at the surface of the recording medium in the direction of recording medium conveyance, the half-width of the illuminance is 20 mm or more. Using said image-forming method, productivity is high and images with excellent gloss homogeneity, surface curability and abrasion properties can be formed.

主权项

1. An image forming method comprising:
discharging an actinic radiation-curable inkjet ink which undergoes temperature-induced sol-gel phase transition to a recording medium, the actinic radiation-curable inkjet ink containing a photopolymerizable compound, a photopolymerization initiator and a gelling agent; and curing the discharged actinic radiation-curable inkjet ink on the recording medium by irradiation with actinic radiation, wherein the irradiation with actinic radiation is carried out so that a maximum illuminance value on a surface of the recording medium is in a range of 2 to 5 W/cm2, and a full width half maximum of illuminance in a distribution of illuminance on an irradiated region of the surface of the recording medium along a conveyance direction of the recording medium is 20 mm or more.