Development device and image forming apparatus

摘要

The development device (5Y; 5M; 5C; 5K) includes a development member (50) and a circulation member (56). The development member develops an electrostatic latent image formed on a latent image carrier (1Y; 1M; 1C; 1K) with a developer including toner and a carrier to make the electrostatic latent image visible. The circulation member receives the developer discharged from the development member and conveys the developer back to the development member. The circulation member includes a container (51) provided upstream, from the development member in a conveyance direction of the developer to store the developer. The container includes an agitator (80) provided inside the container and agitates and mixes the developer and fresh toner supplied to the container. The agitator includes a rotatable agitation member (80B) in which one or more holes (80B1) are formed through which the developer passes to mix the fresh toner and the developer to be agitated in the container.