Patent ID: 7053136

Claim:
A colored particle aqueous dispersion containing colored particles comprising a colorant and a resin, wherein the difference in solubility parameter (SP) between the colorant and the resin is not more than 4.0 (J/cm 3 ) 1/2 , and wherein the colored particles are core/shell colored particles in which the colorant and the resin form a core, and a shell polymer encapsulates the core, and the colorant is a dye wherein log P of the dye is not less than 2.0 higher than log P of the resin or the shell polymer, the log P being defined by the following formula: log P=log So/Sw wherein So represents solubility in 25° C. n-octanol of material to be measured, and SW represents solubility in 25° C. water of material to be measured.