TONER FOR ELECTROSTATIC IMAGE DEVELOPMENT, TWO-COMPONENT DEVELOPER, PROCESS CARTRIDGE, IMAGE FORMING APPARATUS AND IMAGE FORMING METHOD

摘要

PROBLEM TO BE SOLVED: To provide an excellent toner for electrostatic image development which ensures reliable fixation of a charge control agent on a surface thereof even if the toner is a low temperature fixing toner, and which is free from fogging particularly due to the charge amount difference between toner in a developer and replenished toner and does not cause developer degradation, and to provide a two-component developer.

SOLUTION: The toner for electrostatic image development used in a two-component developer including a silicone coated carrier and toner includes a toner base comprising at least a binder resin, a colorant and a release agent, a charge control agent and inorganic fine particles. An average circularity of the toner measured by a flow type particle image analyzer when the toner is replenished is 0.930-0.965, the toner contains 5-20% by number of fine powder of ≤3 μm, and the toner in a developing device after replenishment contains 5-70% by number of fine powder of ≤3 μm.

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