Heat-sensitive recording body

A heat-sensitive recording material comprising an undercoat layer and a heat-sensitive recording layer in this order on a support,

• the undercoat layer containing hollow particles, a binder, and an inorganic pigment I,
• the heat-sensitive recording layer containing a leuco dye, a developer, and an inorganic pigment II, and
• the heat-sensitive recording layer containing an N,N′-diarylurea-based compound represented by the following formula (1):
• wherein R2s may be the same or different, and each represents C1-12 alkyl, C7-12 aralkyl, or C6-12 aryl, and the aralkyl and the aryl may be each substituted with C1-12 alkyl, C1-12 alkoxy, C6-12 aryl, or halogen;
• Ais may be the same or different, and each represents hydrogen or C1-4 alkyl, as the developer, and a pigment with an oil absorption of 130 ml/100 g or less as the inorganic pigment II,
• wherein the heat-sensitive recording layer further contains, as a second developer,
• 4,4′-bis(3-tosylureido)diphenylmethane.