Electrostatic image developing toner, toner container and process cartridge

A process cartridge comprising:

• a latent image bearing member,
• a developing device configured to develop, with a developer, a latent image on the latent image bearing member,
• the latent image bearing member and the developing unit being integrally supported in the process cartridge which is mounted detachably to an image forming apparatus,
• wherein the developer contains an electrostatic image developing toner comprising:
• toner particles;
• wherein the toner particles each contain:
• a core particle comprising a first resin and a colorant;
• and fine resin particles each formed of a second resin and existing in a surface of the core particle,
• wherein part of each fine resin particle is embedded in the core particle to form an embedded region, and the remaining part of the fine resin particle is exposed on the surface of the core particle to form an exposed region, and
• wherein each toner particle satisfies an expression of R1>R1′ where, in a cross-section of the toner particle, R1′ denotes an average diameter of openings of the first resin in which the second resin is embedded and R1 denotes an average diameter of the exposed regions.