Patent ID: 8722302
Filing Date: 2014-05-13
Classification: G03G

Abstract:
1. A method for producing a liquid developer by a coacervation method comprising steps of: preparing a mixed solution by mixing a pigment, a pigment dispersant so as to disperse the pigment in the mixed solution, an acid group-containing resin, a binder resin, an organic solvent, a particle dispersant, and an insulating hydrocarbon dispersion medium, removing the organic solvent from the mixed solution, so that colored resin particles precipitate and the particle dispersant disperses the colored resin particles in the insulating hydrocarbon dispersion medium, wherein the colored resin particle is a particle encapsulating the pigment in the acid group-containing resin, and the particle dispersant is a reaction product of a polyamine compound and a self-condensation product of a hydroxycarboxylic acid.