Cartridge, mounting method for coupling member, and disassembling method for coupling member

摘要

A cartridge is detachably mountable to a main assembly of an electrophotographic image forming apparatus. The cartridge includes coupling member that is provided for receiving a rotational force for rotating a developing roller, with a cylindrical member movably supporting one end portion of the coupling member inside of the cylindrical member, and a cylindrical member side force receiving portion being provided inside the cylindrical member for receiving the rotational force received by the coupling member. The cartridge further includes a first regulating portion for preventing one end portion of the coupling member from disengaging in an axial direction of the cylindrical member; and a second regulating portion for regulating deformation of the first regulating portion in a state in which one end portion of the coupling member is mounted to an inside of the cylindrical member with deformation of the first regulating portion.

主权项

1. An image forming apparatus comprising:
a cartridge comprising:
a developing roller;a coupling member for receiving a rotational force for rotating the developing roller;a cylindrical member movably supporting one end portion of the coupling member inside of the cylindrical member, the cylindrical member being configured to transmit the rotational force from the coupling member to the developing roller; anda member including (i) a supporting portion configured to support the cylindrical member rotatably and (ii) a regulating portion capable of regulating movement of the coupling member, wherein the supporting portion encompasses the regulating portion as seen along a rotational axis of cylindrical member; and a driving motor; and a driving shaft engageable with the coupling member of the cartridge.