The present disclosure provides a process cartridge detachably mounted in an imaging device having a driving head. The imaging device includes a force applying assembly that includes a force applying part. The process cartridge includes a developer bearing member that rotates about an axis extending in a first direction; a developing cartridge frame supporting the developer bearing member; a driving force receiving assembly arranged on one side of the developing cartridge frame, the driving force receiving assembly having a power receiving part extending and retracting substantially in the first direction; and a control mechanism controlling the power receiving part to extend and retract, the control mechanism receiving the force of the force applying part to control the extension and retraction of the power receiving part.