CARTRIDGE, IMAGE FORMATION APPARATUS, AND ASSEMBLING METHOD OF DRIVE TRANSMISSION UNIT

摘要

PROBLEM TO BE SOLVED: To reduce the deformation of a rotational force receiving member at the time when a rotational force is transmitted to the rotational force receiving member in a cartridge used in an apparatus body.SOLUTION: A cartridge which can be attached/detached to/from an image formation apparatus body comprises: a rotatable rotational force receiving member to which a rotational force for transmitting to a rotor is transmitted; a restriction member which is connected to the rotational force receiving member and has an accommodation part inside; a rotatable coupling member which has a free end part having a rotational force receiving portion for receiving the rotational force, and a connection part connected to the restriction member so that the coupling member permits tilting with respect to the rotational force receiving member; and a shaft part which may receive the rotational force from the coupling member. The restriction member includes a support part which supports both ends of the shaft part so as to restrict movement of the shaft part in the rotation direction of the rotor, and transmits the rotational force received from the shaft part via the support part to the rotational force receiving member.SELECTED DRAWING: Figure 1