Polymerized charge enhanced spacer particle

摘要

A toner particle has a core and a shell surrounding the core, wherein the shell contains a polymerized charge enhanced spacer particle, which is a copolymer of a charge control agent and a monomer. A method of making toner particles includes forming a slurry by mixing together a first emulsion containing a resin, optionally a wax, optionally a colorant, optionally a surfactant, optionally a coagulant, and one or more additional optional additive, heating the slurry to form aggregated particles in the slurry, forming a second emulsion containing a monomer and a charge control agent, polymerizing the second emulsion to form a copolymer of the monomer and the charge control agent, and incorporating the copolymer into the toner particles, wherein the aggregated particles form a core of the toner particles.

主权项

1. A method of making toner particles, comprising:
forming a slurry by mixing together a first emulsion containing a resin, optionally a wax, optionally a colorant, optionally a surfactant, optionally a coagulant, and one or more additional optional additives; heating the slurry to form aggregated particles in the slurry; forming a second emulsion comprising:
a monomer; anda charge control agent; polymerizing the second emulsion to form a polymerized charge enhanced spacer particle having a particle size from about 350 nm to about 500 nm; and incorporating the polymerized charge enhanced spacer particle on the surface of the toner particles.