Method for producing electrostatic latent image developing toner

摘要

In producing an electrostatic latent image developing toner, fine particle aggregates are formed by aggregating fine particles containing a binder resin and fine particles containing a release agent in an aqueous medium in the presence of an aggregating agent containing an alkali metal sulfate, and toner particles are formed by coalescing components contained in the fine particle aggregates in an aqueous medium in the presence of hydroxypropyl methyl cellulose.

主权项

1. A method for producing an electrostatic latent image developing toner including a plurality of toner particles, comprising:
(I) aggregation of forming fine particle aggregates by aggregating fine particles containing a binder resin and fine particles containing a release agent in an aqueous medium in the presence of an aggregating agent containing an alkali metal sulfate; and (II) coalescence of forming the toner particles by coalescing components contained in the fine particle aggregates in an aqueous medium in the presence of hydroxypropyl methyl cellulose, wherein the aggregation includes providing a first dispersion of the fine particles containing the binder resin in a first aqueous medium, providing a second dispersion of the fine particles containing the release agent in a second aqueous medium, the second dispersion containing the hydroxypropyl methyl cellulose, combining the first dispersion and the second dispersion to form a mixture, and adding the alkali metal sulfate to the mixture of the first dispersion and the second dispersion.