Patent ID: 8014703

Claim:
A development device, comprising: a development member configured to develop an electrostatic latent image formed on a latent image carrier with a developer including toner and a carrier to make the electrostatic latent image visible; a circulation member configured to receive the developer discharged from the development member in an outward path of the circulation member and convey the developer back to the development member in a return path of the circulation member; and a container provided between the outward path and the return path to store the developer, the container including a first agitator and a second agitator that are provided inside the container and are configured to agitate and mix the developer and fresh toner supplied to the container, the first agitator including a rotatable agitation member in which one or more holes are formed through which the developer passes and that is configured to rotate at a different speed than the second agitator around an outer circumference of the second agitator.