TONER

摘要

A toner containing toner particles, each of which contains a binder resin and a colorant, and silica particles, wherein the silica particles have a volume average particle diameter (Dv) of 70 nm or more and 500 nm or less, the variation coefficient of diameters of the silica particles, based on volume distribution thereof, is 23% or less, and wherein when the silica particles are heated from 105° C. to 200° C., the ratio of mass decrease is 0.60% or less.

主权项

1. A process for producing a toner, comprising the following steps of:
(i) obtaining silica particles by sol-gel method, (ii) performing heat treatment of the silica particles obtained by the step (i), at 300° C. to 500° C., (iii) performing hydrophobizing treatment of the silica particles obtained by the step (ii), with a hydrophobizing agent, and (iv) adding the silica particles obtained by the step (iii), to the toner particles.