| 摘要 |
PROBLEM TO BE SOLVED: To provide an ink composition with high erasability and fastness that decolors or discolors due to abrasion or the like by application of coloration performance and decoloration performance of leuco dye.SOLUTION: A decolorable and discolorable aqueous ink composition at least comprises a colorant microcapsule containing leuco dye and water-insoluble or poorly-soluble phenolic compound with a melting point of 70°C or less, and water-insoluble or poorly-soluble decoloration agent with a melting point of 70°C or less. |
