| 摘要 |
A color developing sheet for pressure-sensitive recording sheet containing in its color developing layer, an organic coreactant (color developing agent), calcium carbonate and styrene-butadiene copolymer latex or modified styrene-butadiene copolymer latex of an average particle size of less than 0.08 mu whereby a color developing sheet having excellent water resistance, very improved mark formation, improved printability, high surface strength, rapid setting of ink, etc. is provided.
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