Patent ID: 8399170

Claim:
A process for production of a liquid developer, which comprises: mixing a pigment, a dispersing agent (A) which is soluble in both a solvent (A) and a solvent (B), a dispersing agent (B) which is soluble in the solvent (A) but insoluble or poorly soluble in the solvent (B), and a part of the solvent (A) to obtain a mixed dispersing liquid, adding and mixing a resin and the residue of the solvent (A) into the mixed dispersing liquid, followed by mixing a hydrocarbon solvent (B) which cannot dissolve said resin and has an SP value lower than that of the solvent (A) to obtain a mixture, and distilling away the solvent (A) from the mixture, whereby said resin dissolved therein is caused to be precipitated, so that a colored resin particle including the pigment therein is dispersed in the solvent (B).