| abstract |
[PROBLEMS] To stabilize the chargeability by preventing embedding and burying of external additives, to have excellent heat-resistant storage stability, and to have image quality due to exudation of a release agent and detachment or lack of a coating layer even in long-term use. To provide a toner that is unlikely to deteriorate. SOLUTION: Toner particles having a core-shell structure in which a coating layer is formed by fixing resin fine particles to core particles containing at least a binder resin, a colorant, and a release agent, and inorganic fine powder The covering ratio of the coating layer to the core particles is 70% or more, and the toner particles have an average circularity of 0.965 to 0.990 measured using a flow type particle image analyzer. When the weight average particle diameter (D4) of the toner particles is D (μm) and the BET specific surface area of the toner particles is S (m 2 / g), D and S satisfy a specific relationship. Features toner. [Selection figure] None |