A heat-sensitive recording material is disclosed, comprising a plastic film or a synthetic paper or a laminate of a plastic film or a synthetic film with a paper; a heat-sensitive recording layer formed on said plastic film or synthetic paper or said laminate, which contains a color former and a color developer which forms a color upon contact with said color former; an interlayer with a Bekk smoothness as defined by TAPPI Standard T479 om-81 of from about 300 to 20,000 seconds formed on said heat-sensitive recording layer, which contains a water-soluble resin or a water-dispersible resin; and an overcoat layer formed on said interlayer, which contains a resin that is curable upon exposure to electron beams.