Developing apparatus, process cartridge, and image forming apparatus

A developing apparatus attachable and detachable relative to an apparatus main body of an image forming apparatus, the developing apparatus comprising:

• a developer bearing member;
• a developing frame that rotatably supports the developer bearing member;
• a one-end side end member that is attached to one end of the developing frame in an axis direction of the developer bearing member, the one-end side end member comprising a one-end side positioned portion to be positioned with respect to the apparatus main body;
• and
• an other-end side end member that is attached to an other end of the developing frame in the axis direction of the developer bearing member, the other-end side end member comprising an other-end side positioned portion to be positioned with respect to the apparatus main body,
• wherein the one-end side end member is rotatable with respect to the developing frame and the other-end side end member, and the other-end side end member is rotatable with respect to the developing frame and the one-end side end member.

A developing apparatus attachable and detachable to and from an apparatus main body of an image forming apparatus, the developing apparatus comprising:

• a developer bearing member;
• a developing frame that rotatably supports the developer bearing member;
• an end member that is attached to either one of a one-end side and an other-end side of the developing frame in an axis direction of the developer bearing member, the end member being rotatable with respect to the developing frame, and the end member comprising a positioned portion to be positioned with respect to the apparatus main body;
• a restricting member that restricts rotation of the end member;
• and
• a restricted portion capable of engaging with the restricting member,
• wherein the restricting member is movable to a position at which the restricting member engages with the restricted portion to restrict the rotation of the end member and a position at which the restricting member disengages from the restricted portion to allow the rotation of the end member.

A developing apparatus comprising:

• a developer bearing member;
• a developing frame for rotatably supporting the developer bearing member, the developing frame including a first portion and a second portion, wherein in an axis direction of the developer bearing member, the first portion is disposed in a first end and the second portion is disposed in a second end opposite to the first end;
• a first end member attached to the first portion;
• and
• a second end member attached to the second portion, and the second end member provided with a first opening and a second opening,
• wherein the first end member is rotatable with respect to the developing frame and the second end member, and the second end member is rotatable with respect to the developing frame and the first end member, and
• wherein as seen in the axis direction, the first end member partially overlaps the developing frame, the second end member partly overlaps the developing frame, and a part of the developing frame is exposed through the first opening and the second opening.