Patent ID: 8262790
Filing Date: 2012-09-11
Classification: C09B,C09D

Abstract:
1. Colored particles comprising a dye and a dispersant, wherein the average particle diameter of the colored particles is 10 nm or more, and 80 nm or less, the dispersant is selected from the group consisting of dodecylbenzene sulfonate, decylbenzene sulfonate, undecylbenzene sulfonate, tridecylbenzene sulfonate, nonylbenzene sulfonate, sodium salts, potassium salts, and ammonium salts thereof, sodium dodecyl sulfate, cetyl trimethyl ammonium bromide, hexadecylpyridinium chloride, hexadecyl trimethyl ammonium chloride, and oxyethylene based alkyl ethers, the solubility index represented by Formula (1), as described below, of the dye relative to water is 9.20 or more relative to any water having a pH of 6.0 to 11.0, and the dye content and the dispersant content in the colored particles satisfy the relationship represented by Formula (2), as described below: wherein, the dye content in colored particles and the dispersant content in colored particles are on a mass basis.