Electrophotographic image forming apparatus, developing apparatus, and coupling member

A cartridge comprising:

• a casing;
• developer contained within the casing;
• a developer roller having an axis L1, the developer roller being rotatably supported in the casing to permit rotation about the axis L1;
• a rotatable stirring member provided in the casing;
• and
• a coupling member having an axis L2 about which the coupling member is rotatable, the coupling member including (i) a first end portion operatively connected to the developer roller and the stirring member and (ii) a second end portion for receiving a rotational force, the second end portion including at least two projections that are at least partly outside of the casing, each of the at least two projections being open to the axis L2,
• wherein the rotational force received by the coupling member is transmitted to the developer roller and the stirring member, and
• wherein the coupling member is movable between (i) a first position in which the axis L2 of the coupling member is substantially parallel to and offset from the axis L1 of the developer roller and (ii) a second position in which the axis L2 of the coupling member is inclined with respect to the position of the axis L2 when the coupling member is in the first position.

A cartridge comprising:

• a casing;
• developer contained within the casing;
• a developer roller having an axis L1, the developer roller being rotatably supported in the casing to permit rotation about the axis L1;
• a rotatable stirring member provided in the casing;
• and
• a coupling member having an axis L2 about which the coupling member is rotatable, the coupling member including (i) a first end portion operatively connected to the developer roller and the stirring member and (ii) a second end portion for receiving a rotational force, the second end portion including at least one projection that is at least partly outside of the casing, the at least one projection being open to the axis L2,
• wherein the rotational force received by the coupling member is transmitted to the developer roller and the stirring member, and
• wherein the coupling member is movable between (i) a first position in which the axis L2 of the coupling member is substantially parallel to and offset from the axis L1 of the developer roller and (ii) a second position in which the axis L2 of the coupling member is inclined with respect to the position of the axis L2 when the coupling member is in the first position.