CARTRIDGE DETACHABLY MOUNTABLE TO MAIN ASSEMBLY OF ELECTROPHOTOGRAPHIC IMAGE FORMING APPARATUS, ASSEMBLING METHOD FOR DRIVE TRANSMITTING DEVICE FOR PHOTOSENSITIVE DRUM, AND ELECTROPHOTOGRAPHIC IMAGE FORMING APPARATUS

摘要

With a structure in which a coupling member includes a sphere providing a center of inclination (pivoting), a rotational force transmitted member has an opening have a diameter smaller than that of the sphere, and the coupling member is prevented from disengaging from rotational force transmitted member by contact of inner edge of the opening to the sphere, the inner edge of the opening may limit an inclinable (pivotable) angle range of the coupling member. In a state that a pin that is a shaft portion is inserted in a hole that is a through-hole provided in a coupling member, opposite end portions of the pin are supported by a driving side flange, which is a rotational force transmitted member. The coupling member, the driving side flange, and the pin are connected in this manner, and the pin contacts the inside of the hole without limiting the inclinable (pivotable) angle range, by which the coupling member is prevented from disengaging from the driving side flange.

主权项

1. A cartridge detachably mountable to a main assembly of an electrophotographic image forming apparatus including a main assembly side rotatable engaging portion, wherein said cartridge is demountable to an outside of said apparatus main assembly after movement in a predetermined direction substantially perpendicular to a rotational axis of the main assembly side engaging portion, said cartridge comprising:
(i) a rotatable member which is rotatable carrying a developer; (ii) a rotatable rotational force transmitted member which includes an accommodating portion at inside thereof and to which a rotational force to be transmitted to the rotatable member is transmitted; (iii) a rotatable coupling member including,
(iii-i) a free end portion having a rotational force receiving portion configured to receive the rotational force from the main assembly side engaging portion,(iii-ii) a connecting portion which is connected with said rotational force transmitted member and at least a part which is accommodated in said accommodating portion so that a rotational axis of said coupling member is pivotable relative to a rotational axis of said rotational force transmitted member to permit said rotational force receiving portion to disengage from the main assembly side engaging portion with a movement of said cartridge in the predetermined direction,(iii-iii) a through-hole penetrating said connecting portion; and (iv) a shaft portion capable of receiving the rotational force from said coupling member and penetrating said through-hole and supported by said rotational force transmitted member at opposite end portions thereof so that said coupling member is prevented from disengaging from said rotational force transmitted member while permitting the pivoting of said coupling member.