Patent ID: 9223237
Filing Date: 2015-12-29
Classification: G03G

Abstract:
1. A method of attaching one or more additives to a toner particle surface comprising: conducting a carrier gas comprising toner particles into a reaction tube which is in communication with a microwave resonant cavity, wherein said microwave resonant cavity is in microwave with a wave guide; conducting plasma-inducing microwaves in said wave guide to said cavity; generating carrier gas plasma in said reaction tube in said microwave resonant cavity, wherein said toner particles are exposed to said carrier gas plasma; igniting said exposed plasma, wherein said ignited plasma activates toner particle surfaces; exposing said activated toner particles to a powder cloud comprising one or more additives, wherein said one or more additives attach to the surface of the activated toner particles and wherein the one or more additives are external additives; and exposing said toner particles comprising additives to an elevated temperature to produce toner particles comprising additives at the surface thereof.