Patent ID: 6168896
Filing Date: 2001-01-02
Classification: G03G

Abstract:
A process for producing a binder resin for a toner for electrostatic image development comprising the steps of (1) mixing a resin solution and a resin emulsion with stirring and (2) removing water and solvent simultaneously with or after the step (1) to obtain a solventless mixed resin composition; and wherein the resin of the resin solution has a gel permeation chromatogram (GPC) peak molecular weight Mp of 1,500 to 30,000 and a weight average molecular weight (Mw)/number average molecular weight (Mn) ratio of less than 4.0, and the resin of the resin emulsion has a gel permeation chromatogram (GPC) peak molecular weight Mp of 300,000 to 3,000,000.