| 摘要 |
PURPOSE:To enhance a shelf stability of a recording image and prevent a color forming contamination and a change or fade of a printing color by a method wherein a specific diarylmethane compound is used as a basic dye and encapsuled in a specific microcapsule, and a specific activated clay mineral is used as a color developer. CONSTITUTION:In a pressure-sensitive recording body, a color reaction of a colorless or light-colored basic dye with a color developer is used. In this invention, as the basic dye, a diarylmethane compound shown by a separate general formula is used. In addition, the basic dye is encapsuled in a microcapsule made of a polyurethane resin and/or a polyurea resin with a 3-15mum average particle diameter and a 0.1-0.7mum average film thickness. Furthermore, as the color developer, an activated clay mineral containing 65-80wt.% silicon oxide is used. In the separate general formula, R1-R4 each represents a 1-5C alkyl group or benzyl group, R5 and R6 each represents a hydrogen atom or the like, and R7 represents a 1-5C alkyl or the like. |
