Developer supplying unit with multiple containers

摘要

A developer supplying container of cylindrical shape which is connectable in a direction of its rotational axis. The container having a developer sending aperture on a base, a developer receiving aperture on the opposite base, and a connecting member to detachably connect the container to a second container having the same construction as the former container. The developer accommodated in the former container is transported to the second container through the developer sending aperture of the former container and a developer receiving aperture of the second container, and supplied to the developing device with the developer accommodated in the second container. When the developer accommodated in the former container is exhausted, only the former container should be replaced.