Patent ID: 11927913
Assignee: CANON KABUSHIKI KAISHA
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A cartridge unit attachable to and detachable from an apparatus main body, including a main body contact, of an image forming apparatus, the cartridge unit comprising:
a first unit including a photosensitive drum and a developing roller; and
a second unit including a locked protrusion and a rotation portion, and configured to be:
attachable to and detachable from the first unit and supply developer to the first unit in a state where the second unit is attached to the first unit, wherein the second unit is configured to be attached to the first unit by rotating relative to the first unit; and
attachable to and detachable from the apparatus main body in the state where the second unit is attached to the first unit,

wherein the second unit includes:
an end surface, which is at an end portion of the second unit with respect to a rotational axis direction of the developing roller, extending in a direction crossing the rotational axis direction of the developing roller; and
a first storage member that stores information,

wherein the first storage member is disposed on the end surface, and includes:
a first storage element; and
a first memory contact electrically connected to the first storage element,

wherein, in the state where the second unit is attached to the first unit and in a state where the second unit is attached to the apparatus main body, the first memory contact directly contacts the main body contact,
wherein, in the state where the second unit is attached to the first unit and in a state where the locked protrusion is fixed to the first unit, the rotation portion is rotatable relative to the locked protrusion, and
wherein the first storage member is disposed in the rotation portion.