| 摘要 |
Provided are: a dye which has excellent developed color density and excellent light resistance; a microcapsule pigment using this dye; and an ink composition for writing utensils. A microcapsule pigment which contains at least a dye that is characterized by being formed of a leuco dye represented by formula (I), a developer and a color change temperature regulator; and an ink composition for writing utensils, which is characterized by containing this microcapsule pigment. (In formula (I), each of X and Y represents a hydrogen atom, an alkyl group having 1-4 carbon atoms or a halogen atom, and X and Y may be the same as or different from each other, provided that X and Y are not hydrogen atoms at the same time; and Z represents an ethyl group or a butyl group.) |
