Cartridge and electrophotographic image forming apparatus

摘要

A cartridge is provided to be used in a main assembly of an electrophotographic image forming apparatus. The main assembly includes a rotatable driving coupling member including a driving force transmitting portion for transmitting a driving force and a driving side abutment. The cartridge is demountable in a direction substantially perpendicular to a rotational axis of the driving coupling member, and includes a rotatable driven coupling member with a driving force receiving portion for receiving the driving force. The cartridge also includes a driven side abutment to be abutted by the driving side abutment. The driven coupling member is slidable in a predetermined direction that is substantially parallel with a rotational axis of the receiving coupling member. At least one of the driving side abutment and the driven side abutment is inclined so that the driven coupling member is retractable away from the driving coupling member in the predetermined direction by a force received by driven side abutment from the driving side abutment.