Electrographic toners

A method of making electrographic toner, comprising:

• admixing toner particles with aluminum oxide particles, small sol-gel silica particles having a particle size distribution from 20 nm to 50 nm, large sol-gel silica particles having a particle size distribution from 90 nm to 130 nm, and fumed silica particles having a D50 particle size from 30 nm to 50 nm surface-treated with polydimethylsiloxane, wherein the admixing occurs in a chamber at an intensity sufficient to cause the toner particles to be surface-treated with the aluminum oxide particles, the small sol-gel silica particles, the large sol-gel silica particles, and the fumed silica particles, wherein the toner particles have a specific surface area from 3.0 m2/g to 3.65 m2/g and include a binder resin, a colorant, and a releasing compound;
• and
• recovering the electrographic toner from the chamber.