Patent ID: 8565650

Claim:
An image forming apparatus comprising: a casing, a cartridge configured to be detachably attached to the casing, and a toner box configured to be attached to the casing, wherein at least one of the casing and the toner box has a passage opening through which toner is movable between the toner box and the cartridge, wherein the cartridge comprises: a first housing which has a first opening and a first edge portion bounding the first opening; and a second housing which supports a toner carrier, which is attached to the first housing so that the toner carrier confronts an image carrier and the second housing is movable relative to the first housing in an orthogonal direction substantially orthogonal to a rotational axis of the image carrier and which has a second opening facing the first opening in a direction substantially parallel to the rotational axis of the image carrier and a second edge portion bounding the second opening, wherein the cartridge is configured to be attached to the casing so that the first opening confronts and communicates with the passage opening and a relative position of the first opening to the passage opening is fixed, and wherein the cartridge further comprises an elastic element which blocks a gap between the first edge portion and the second edge portion.