Patent ID: 8135312

Claim:
A development apparatus comprising: a first developer storage container and a second developer storage container that store developer, the first developer storage container having a first opening and a second opening, so that the first developer storage container and the second developer storage container are in communication; a first transport member that is provided within the first developer storage container, and that by rotating around a center of rotation, while transporting developer stored in the first developer storage container, causes the developer to move to the second developer storage container via the first opening; a second transport member that is provided within the second developer storage container, and that by rotating around a center of rotation, while transporting developer stored in the second developer storage container, causes the developer to move to the first developer storage container via the second opening; a developer holding member that holds developer supplied from the first developer storage container or the second developer storage container, and performs development by causing the developer to move to a position facing an image holding body on which a latent image is formed; and a moving member that is provided so as to fit between an inner wall face of the second developer storage container and an outer edge of the second transport member, and is moved between a first position where the second opening is covered and a second position where the second opening is not covered, and when moved to the second position, covers the inner wall face, viewed from the lowermost position in the second developer storage container, on the downstream side in the direction of rotation of the second transport member and on the side below the center of rotation of the second transport member in the direction of gravity, the moving member being positioned between the inner wall face and the outer edge when the moving member is moved to the first position and the second position.