Patent ID: 8703374

Claim:
A toner particle, the toner particle comprising: a core; and a shell, wherein the shell comprises charge control agent-treated spacer particles that cause protrusions from the toner particle surface, wherein the spacer particles are selected from the group consisting of latex particles, polymer particles, and alkyl tri-alkoxy silane particles, and the charge control agent is about 0.001 to about 20 weight percent of the toner particle; wherein the charge control agent-treated spacer particles are generally spherical and have an average diameter of about 50 to about 1500 nm; wherein the toner particle accepts a particle charge of above about 35 μC/gm in an environment of 80° F. and 80-85% relative humidity, above about 65 μC/gm in an environment of 70° F. and 50% relative humidity, and above about 85 μC/gm in an environment of 70° F. and 10% relative humidity.