Patent ID: 8216761

Claim:
A method for producing a toner, comprising (1) preparing an aqueous dispersion containing polyvinylpyrrolidone/colloidal silica aggregates having a diameter smaller than 100 nm in an amount of 1% or less by weight based on a total weight of all aggregates by dispersing a polyvinylpyrrolidone and colloidal sillica in an aqueous medium, stirring the aqueous medium of the polyvinylpyrrolidone and the colloidal sillica at 11,000 rpm, leaving to stand for about 10 minutes, and removing supernatant; (2) preparing a mixture of monomers; (3) homogenizing the mixture of monomers in the aqueous dispersion to disperse the mixture of monomers in the aqueous dispersion in a form of microdroplets; and (4) polymerizing the mixture of monomers dispersed in the aqueous dispersion.