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SENSITIZER PARTICLE DISPERSION FOR THERMOSENSITIVE RECORDING MEDIUM COMPOSED MAINLY OF STEARIC ACID AMIDE, PREPARATION METHOD THEREOF, MIXED DISPERSION COMPOSITION FOR THERMOSENSITIVE RECORDING LAYER, AND THERMOSENSITIVE RECORDING MEDIUM
SENSITIZER PARTICLE DISPERSION FOR THERMOSENSITIVE RECORDING MEDIUM COMPOSED MAINLY OF STEARIC ACID AMIDE, PREPARATION METHOD THEREOF, MIXED DISPERSION COMPOSITION FOR THERMOSENSITIVE RECORDING LAYER, AND THERMOSENSITIVE RECORDING MEDIUM
A sensitizer particle dispersion containing stearic acid amide, a preparation method thereof, a mixed dispersion composition for a thermosensitive recording layer using the sensitizer particle dispersion, and a thermosensitive recording medium using the mixed dispersion composition are provided. The sensitizer particle dispersion can be safely prepared under atmospheric pressure by mixing stearic acid amide and another sensitizer at a mass ratio of 95:5 ∼ 51:49; co-melting the mixture by heat in emulsifier-dispersed water, whereby the mixture is unified and emulsified into particles, or emulsifying the co-melted mixture of stearic acid amide and the other sensitizer unified by co-melting the mixture by heat, into particles in emulsifier-dispersed water; and quenching the obtained emulsified dispersion, thus crystallizing sensitizer particles from the emulsified particles.
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