DEVELOPER, DEVELOPING DEVICE, IMAGE FORMING APPARATUS, PROCESS CARTRIDGE, AND IMAGE FORMING METHOD

摘要

A two-component developer used in an image forming apparatus including a latent image bearing member and a developing device includes a magnetic carrier and a toner. The toner includes a toner base and inorganic fine particles as an external additive. A loose apparent density of the toner is not greater than 0.39 g/cm3. A coverage of the external additive over the toner base of the toner is not greater than 80% of a surface area of the toner base. An apparent density of the developer is in a range of from 1.55 g/cm3 to 1.70 g/cm3. The developing device includes a developer bearing member, a supply transport path, a circulation transport path, and a partition member.