Ricoh Company, Ltd.

Hiroaki Okuda

Koji Yamamoto

Norihiko Inaba

Hideo Aihara

Yukihiro Yuyama

Hiroaki Inoue

Kenji Uematsu

A thermosensitive recording material comprising a leuco dye, a color developer and a water-soluble lubricant such as an alkylphosphate compound having formula (I) or (II): ##STR1## wherein R.sub.1, R.sub.2 and R.sub.3 each independently are an alkyl group, an alkynyl group or a monovalent metallic element, but they cannot be the metallic element at the same time; or ##STR2## wherein R.sub.4 is an alkyl group or an alkynyl group, and R.sub.5 is a monovalent metallic element.

Thermosensitive recording material

A thermosensitive recording material is disclosed, which comprises a support, and a thermosensitive recording layer formed on one side of the support, the thermosensitive recording layer comprising (i) a thermosensitive coloring layer comprising a thermosensitive coloring system capable of producing a color upon application of heat thereto, and (ii) a colored layer comprising a colored fluorescent dye composition.

Thermosensitive recording material having recording layer containing

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Numazu, Japan

Hiroaki Okuda