Sanyo-kokusaku Pulp Co., Ltd.

Minematsu Nagashima

Hisashi Mino

Masao Matsukawa

A heat-sensitive recording material having a heat-sensitive layer composed mainly of a leuco dye, a phenolic compound and a water-soluble binding agent is characterized in that a combination of bisphenol A and p-phenylphenol is applied as the developer in a ratio by weight between 10:1 and 1:1, preferably 7:1 and 1:1.

Heat-sensitive recording material

A heat-sensitive recording material having a heat-sensitive layer composed mainly of a leuco dye and a phenolic compound used as a developer, said heat-sensitive layer containing as a binding agent any one or combinations of polyvinyl alcohol, oxidized starch and etherized starch, and methyl cellulose in a ratio by weight between 98:2 and 90:10.

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Higashimatsuyama, Japan

Minematsu Nagashima