During the 1880's, Seiji TAGUCHI, an elementary school teacher, came up with the idea of making liquid sumi when he saw his students grinding sumi with cold water during winter.
明治20年代、小学校教員をしていた田口精爾が冬場に冷たい水で墨をする生徒達を見て液体の墨を作る事を発起。