| abstract |
An object of the present invention is to achieve both high sensitivity, high definition of a printed image, and a head matching function and an interlayer binding property. In a heat-sensitive recording material in which an undercoat layer containing plastic spherical hollow particles, a heat-sensitive color-developing layer, and a protective layer are sequentially laminated on a support, the hollow particles have an average particle diameter of 1 μm or less and a hollow ratio. A mixture of a hollow particle A of 80% or less and a hollow particle B having an average particle diameter of 2 to 10 μm and a hollow ratio of 80% or more is used, and the undercoat layer has a glass transition point (Tg) of 40 ° C. or more. A heat-sensitive recording material comprising a functional polymer emulsion resin. [Selection figure] None |