Developing apparatus, process cartridge, and image forming apparatus

A developing cartridge comprising:

• a developing roller;
• a developing frame body rotatably supporting the developing roller such that a part of the developing roller is exposed to outside of the developing cartridge, the developing frame body including a toner chamber containing toner;
• a developing coupling configured to receive rotational force from outside of the developing cartridge for rotating the developing roller;
• and
• an end member attached to an end of the developing frame with respect to an axial direction of the developing roller so that the end member is movable relative to the developing frame body, the end member being configured to support the end of the developing frame body,
• wherein the end member includes an opening configured to expose the developing coupling to outside of the developing cartridge, and
• wherein, with movement of the developing frame body relative to the end member, the developing roller moves from a first position to a second position in a direction that crosses a position of an axis of the developing roller when the developing roller is in the first position.