Color toner, method for manufacturing the toner, and image forming apparatus and method using the toner

摘要

A color toner composition including at least toner particles including at least a binder resin; a colorant and a release agent dispersed in the binder resin; and a titania as an external additive, wherein the colorant has an average dispersion particle diameter not greater than 0.5 mum; the release agent and the binder resin are insoluble to each other; the toner particles satisfy the relationship: 0.05<=DW/D4<=0.4, wherein Dw represents an average dispersion particle diameter of the release agent and D4 represents a weight-average particle diameter of the toner particles; and the titania has a segregation rate of from 0.5 to 5%.