Abstract: A process cartridge includes a photosensitive drum, a developing roller configured to develop a latent image on the photosensitive drum with toner, and a coupling member having a rotational axis, with the coupling member being operatively connected to the photosensitive drum. The coupling member includes a cylindrical portion having an outer surface and an inner surface that extends about the rotational axis of the coupling member, an arm portion extending from the inner surface of the cylindrical portion, and a projection projecting from the arm portion in a direction toward the rotational axis of the coupling member. The arm portion and the projection are movable relative to the inner surface.

Abstract: A drum unit for a cartridge includes a photosensitive drum and a coupling member having a rotational axis, with the coupling member being operatively connected to the photosensitive drum. The coupling member includes a cylindrical portion having an outer surface and an inner surface that extends about the rotational axis of the coupling member, an arm portion extending from the inner surface of the cylindrical portion, and a projection projecting from the arm portion in a direction toward the rotational axis of the coupling member. The arm portion and the projection are movable relative to the inner surface.

Abstract: A drum unit for a cartridge includes a photosensitive drum and a coupling member rotatable about a rotational axis thereof, the coupling member being operatively connected to the photosensitive drum. The coupling member includes a movable extended portion that extends in a first direction, and a projection projecting from the extended portion in a second direction that crosses the first direction, the projection being capable of transmitting a driving force to the photosensitive drum. At least a part of the projection is positioned inside of the photosensitive drum.

Abstract: A manufacturing method of a cartridge, the cartridge having a frame; a blade member fixed to the frame; a rotating member; and a bearing member for supporting the rotating member, the manufacturing method including: attaching the rotating member to the bearing member; fitting an adjustment shaft provided at the frame with an adjustment hole provided at the bearing member; adjusting a relative position of the bearing member with respect to the frame in a crossing direction crossing the rotational axial direction; and welding the frame and the bearing member after the adjusting, wherein at least one of the frame or the bearing member is melted such that a melted portion is formed between an inner peripheral surface of the adjustment hole and the adjustment shaft in the crossing direction.

Abstract: A supporting unit for supporting a rotatable member to feed a developer includes a frame including a first surface extending in a direction crossing an axis of the rotatable member and a second surface extending in a direction crossing the first surface, and a fixed member. The fixed member includes (i) a first opposing surface opposing and contacting the first surface, (ii) a second opposing surface opposing the second surface, and (iii) a first front side surface opposite from the second opposing surface. The second opposing surface is welded to the second surface by ultrasonic spot welding such that a first recess is formed on the first front side surface.

Abstract: A cartridge includes a casing and a photosensitive drum rotatably supported by the casing. A coupling member is operatively connected to the photosensitive drum, with the coupling member being rotatable about a rotational axis thereof. The coupling member includes (i) a cylindrical portion, (ii) a first projection at least partially positioned inside of the cylindrical portion, (iii) a second projection at least partially positioned inside of the cylindrical portion, and (iv) an aligner at least partially positioned inside of the cylindrical portion, the aligner including a surface that faces the rotational axis. A distance between at least one of the first and second projections and the aligner is changeable.

Abstract: A cartridge includes a casing and a photosensitive drum rotatably supported by the casing, with the photosensitive drum having a first end and a second end. A coupling member is provided adjacent to the first end of the photosensitive drum, with the coupling member being operatively connected to the photosensitive drum. The coupling member includes (i) a cylindrical portion, (ii) a first projection at least partially positioned inside of the cylindrical portion, (iii) a second projection at least partially positioned inside of the cylindrical portion, (iv) an elastically movable projection at least partially positioned inside of the cylindrical portion, and (v) a wall extending in a direction perpendicular to the rotational axis and positioned between the second end of the photosensitive drum and the first and second projections.

Abstract: A rotatable member includes a hollow cylindrical rotation shaft formed with a curved plate-like member. The rotation shaft includes a seam where end surfaces of the plate-like member are contacted to each other. The rotation shaft includes a rotational drive transmitting portion which is provided at an axial end portion thereof and which includes a contact surface contactable to a driver for driving the rotation shaft and configured to receive the driving force from the driver. In a coordinate system with the rotational axis as an origin, the contact surface is provided at a position away by 90° or more from the seam in a normal rotational direction which is a direction in which the rotatable member rotates to form an image.

Abstract: A cartridge includes a rotatable member configured to carry toner on a surface and a coupling member operatively connected to the rotatable member. The coupling member is rotatable about a rotational axis thereof, and the coupling member includes an extended portion that is movable in a direction perpendicular to the rotational axis, and a projection projecting from the extended portion, with the extended portion extending in a direction crossing a projecting direction of the projection. The extended portion extends downstream in a rotational direction of the coupling member toward the projection.

Abstract: A drum unit for a cartridge includes a photosensitive drum and a coupling member rotatable about a rotational axis thereof, the coupling member being operatively connected to the photosensitive drum. The coupling member includes a movable extended portion that extends in a first direction, and a projection projecting from the extended portion in a second direction that crosses the first direction, the projection being capable of transmitting a driving force to the photosensitive drum. At least a part of the projection is positioned inside of the photosensitive drum.

Abstract: A cartridge includes a photosensitive drum and a coupling member operatively connected to the photosensitive drum, with the coupling member including an arm portion and a projection projecting from the arm portion. The arm portion of the coupling member extends from a point that is upstream in the rotational direction of the photosensitive drum towards a point that is downstream in the rotation direction of the photosensitive drum.

Abstract: A drum unit for a cartridge includes a cylindrical photosensitive drum having an axis L1, and a coupling member operatively connected to the photosensitive drum. The coupling member includes a drum flange provided at an end of the photosensitive drum with a part of the drum flange being positioned inside of the photosensitive drum. The drum unit also includes a connecting part operatively connected to the drum flange, with the connecting part including a cap positioned adjacent to the drum flange, an arm portion extending from the cap in a direction of the axis L1, and a projection projecting from the arm portion in a direction perpendicular to the axis L1. The arm and the projection are movable relative to the drum flange and the cap.

Abstract: A drum unit for a cartridge includes a cylindrical photosensitive drum having an axis L1 and a coupling member operatively connected to the photosensitive drum. The coupling member includes a drum flange provided at an end of the photosensitive drum, with a part of the drum flange being positioned inside of the photosensitive drum, and a connecting part operatively connected to the drum flange. The connecting part includes a cap positioned adjacent to the drum flange, an arm portion extending from the cap in a direction of the axis L1, and a projection projecting from the arm portion in a direction perpendicular to the axis L1, with the projection being movable between a first position and a second position, and with an end of the projection being closer to the axis L1 in the first position than in the second position.

Abstract: A process cartridge includes a photosensitive drum and a coupling member operatively connected to the photosensitive drum, with the coupling member including an arm portion and a projection projecting from the arm portion. The arm portion of the coupling member extends from a point that is upstream in the rotational direction of the photosensitive drum towards a point that is downstream in the rotation direction of the photosensitive drum.

Abstract: A drum unit for a cartridge includes a photosensitive drum and a coupling member provided adjacent to an end of the photosensitive drum. The coupling member includes an arm portion, and a projection projected from the arm portion in a direction towards a rotational axis of the coupling member, with a part of the projection inclined relative to the rotational axis of the coupling member. The arm portion extends in a circumferential direction of the coupling member, and, as measured in a direction perpendicular to the rotational axis of the coupling member, a distance between the inclined part of the projection and the rotational axis of the coupling member increases as the distance in the direction of the rotational axis of the coupling member to another end of the photosensitive drum decreases.

Abstract: A drum unit for a cartridge includes a cylindrical photosensitive drum having an axis L1 and a coupling member operatively connected to the photosensitive drum. The coupling member includes a first member having a cylindrical portion, a part of the first member being positioned inside of the photosensitive drum and a part of the first member being positioned outside of the photosensitive drum. The coupling member also includes a second member operatively connected to first member, the second member including a plurality of arm portions that are movable relative to the first member, with at least a part of each of the arm portions being positioned inside of the photosensitive drum and inside of the first member.

Abstract: A drum unit for a cartridge includes a photosensitive drum and a coupling member having a rotational axis, with the coupling member being operatively connected to the photosensitive drum. The coupling member includes a cylindrical portion having an outer surface and an inner surface that extends about the rotational axis of the coupling member, an arm portion extending from the inner surface of the cylindrical portion, and a projection projecting from the arm portion in a direction toward the rotational axis of the coupling member. The arm portion and the projection are movable relative to the inner surface.

Abstract: A Process cartridge includes a photosensitive drum and a coupling member operatively connected to the photosensitive drum, with the coupling member including an arm portion and a projection projecting from the arm portion, the arm portion being capable of transmitting driving force from the projection towards the photosensitive drum. The arm portion of the coupling member extends from a point that is upstream in the rotational direction of the photosensitive drum towards a point that is downstream in the rotation direction of the photosensitive drum.