Thermosensitive recording material

In a thermosensitive recording material comprising a support material, an undercoat layer formed thereon, a thermosensitive coloring layer formed on said undercoat layer and an overcoat layer formed on said thermosensitive coloring layer, the improvement wherein

• (a) said undercoat layer comprises:
• a polyvinyl alcohol having a saponification ratio ranging from 80 mole % to 95 mole %, which serves as a water-soluble binder agent,
• a first water-resisting-property-improvement agent, and
• a first organic filler,
• (b) said thermosensitive coloring layer comprises:
• a leuco dye,
• a color developer capable of inducing color formation in said leuco dye upon application of heat thereto, and
• a polyvinyl alcohol having a saponification ratio ranging from 80 mole % to 95 mole %, which serves as a water-soluble binder agent, and
• (c) said overcoat layer comprises:
• a polyvinyl alcohol having a saponification ratio ranging from 80 mole % to 95 mole %, which serves as a water-soluble binder agent,
• a second water-resisting-property-improvement agent, and
• a second organic filler.