Patent ID: 9023575
Filing Date: 2015-05-05
Classification: G03G

Abstract:
1. A method for producing a toner, comprising the following (i) or (ii): (i) adding a polymerizable monomer composition containing a polymerizable monomer and silica particles to an aqueous medium to form particles of the polymerizable monomer composition, and polymerizing the polymerizable monomer contained in the particles to produce toner particles; or (ii) mixing a binder resin, the silica particles, and an organic solvent that can dissolve the binder resin to prepare a resin solution containing dispersed silica particles and the binder resin dissolved in the organic solvent, adding the resin solution to an aqueous medium to form particles of the resin solution, and removing the organic solvent from the particles to produce toner particles, wherein the silica particles have a volume-average particle diameter (Dv) of 50 nm or more and 800 nm or less, the mass loss rate due to heating of the silica particles from 105° C. to 200° C. is 0.60% or less, and the hydrophobicity of the silica particles is 5% or more and less than 40%.