TONER COMPOSITION WITH CHARGE CONTROL AGENT-TREATED SPACER PARTICLES

摘要

PROBLEM TO BE SOLVED: To provide toner particles which exhibit consistent charging properties over the lifetime of a toner and good printing properties and high consistency in all temperature/humidity environments.SOLUTION: A toner particle includes a shell and a core. The shell includes charge control agent-treated spacer particles that cause protrusions from a toner particle surface. The protrusions and the presence of the charge control agent-treated spacer particles provide more consistent charging properties over the lifetime of a toner because the charge control agent species remain accessible on the outer surface of the toner particles even when other additives impact on the toner particle surface before the end of the life of a toner cartridge.