. . "Means for dispersing a colorant to be used in the present invention is not limited as long as it is generally used for each colorant, and examples thereof include: dispersing devices such as a paint shaker, a sand mill, an agitator mill, and a three-roll mill; high-pressure homogenizers such as a microfluidizer, a nanomizer, and an altimizer; and ultrasonic dispersing devices. (Aqueous Precipitati" . .