Heat-sensitive record material
AssigneeKanzaki Paper Manufacturing Co., Ltd.
InventorsYoshitaka Oeda, Takeshi Murakami, Hiroo Hayashi, Teruo Nakamura
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Abstract
In a heat-sensitive record material comprising a base sheet and a color developing layer formed thereon, a pigment having an oil absorption within the range of 80 to 800 ml/100 g is additionally included in the color developing layer.
Claims10
In a heat-sensitive record material comprising a base sheet and a color developing layer formed on at least one surface of said base sheet, said color developing layer comprising colorless chromogenic material and acceptor which is reactive with said colorless chromogenic material to develop a color, the improvement in said color developing layer further including pigment having an oil absorption within the range of 80 to 800 ml/100 g, in which said pigment is finely divided silicon dioxide.
Dependencies are inferred from the claim text.