Abstract: A coupling member for an image forming apparatus cartridge includes a first end portion including an outer surface and a plurality of surfaces forming a recess extending in a direction from the outer surface toward the rotational axis. The plurality of surfaces include a first surface, a second surface opposite to the first surface, and a third surface extending between the first surface and the second surface. As viewed in a direction toward the recess and perpendicular to the rotational axis, the third surface faces toward outside of the recess, and both of the first and second surfaces are sloped with respect to a plane that is perpendicular to the rotational axis such that a distance measured along a direction of the rotational axis between the first and second surfaces decreases as a distance along the first and second surfaces from the outer surface increases.

Abstract: A coupling member for an image forming apparatus cartridge is configured to rotate about a rotational axis thereof. The coupling member includes an end portion having an outer surface and a plurality of surfaces forming a recess extending in a direction from the outer surface toward the rotational axis. The plurality of surfaces includes a first surface, a second surface opposite to the first surface, and a third surface extending between the first surface and the second surface. As viewed in a direction toward the recess and perpendicular to the rotational axis, the third surface faces toward outside of the recess. Both of the first and second surfaces are sloped with respect to a plane that is perpendicular to the rotational axis such that a distance measured along a direction of the rotational axis between the first and second surfaces decreases as a distance along the first and second surfaces from the outer surface increases.

Abstract: 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 angle range.

Abstract: 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 angle range.

Abstract: 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 88 which is a shaft portion is inserted in a hole 86b which is a through-hole provided in a coupling member 86, opposite end portions of the pin 88 are supported by a driving side flange 87 which is a rotational force transmitted member. The coupling member 86 and the driving side flange 87 and the pin 88 are connected in this manner, and the pin 88 contact the inside of the hole 86b without limiting the inclinable (pivotable) angle range, by which the coupling member 86 is prevented from disengaging from the driving side flange 87.

Abstract: 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 88 which is a shaft portion is inserted in a hole 86b which is a through-hole provided in a coupling member 86, opposite end portions of the pin 88 are supported by a driving side flange 87 which is a rotational force transmitted member. The coupling member 86 and the driving side flange 87 and the pin 88 are connected in this manner, and the pin 88 contact the inside of the hole 86b without limiting the inclinable (pivotable) angle range, by which the coupling member 86 is prevented from disengaging from the driving side flange 87.

Abstract: A developing device includes a developer carrying member for developing an electrostatic image with a developer, a developer container including a developing opening, and a developer supplying member for supplying the developer to a developing chamber through the developing opening. The developer supplying member includes a shaft member rotatably supported by the developer accommodating portion and a feeding member, wherein the feeding member includes a first feeding portion and a second feeding portion. The first feeding portion is provided in a downstream side, and the second feeding portion is provided in an upstream side with respect to a rotational direction of the shaft member.

Abstract: 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 88 which is a shaft portion is inserted in a hole 86b which is a through-hole provided in a coupling member 86, opposite end portions of the pin 88 are supported by a driving side flange 87 which is a rotational force transmitted member.

Abstract: A developing device includes: a developer carrying member; a developer container including a developer accommodating portion, a developing opening and a developing chamber; and a developer supplying member including a shaft member and a feeding member. The feeding member includes a first feeding portion having a length L1 and a radius R1, and includes a second feeding portion having a length L2 and a radius R2. When a length of the developing opening is L3, a shortest length from the developing opening to the rotation center of the shaft member is L4, and a length from the developer carrying member to the rotation center of the shaft member is L5, the following relationships are satisfied: L1<L3<L2, and L4<R1<L5.

Abstract: 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 angle range.

Abstract: A developing device includes a developer carrying member for developing an electrostatic image with a developer, a developer container including a developer accommodating portion, a developing opening, and a developing chamber, and a developer supplying member that includes a shaft member, a first feeding member, and a second feeding member. The first feeding member has a length L1 measured in an axial direction of the developer carrying member and has a rotational radius R1 measured from a rotation center of the shaft member, and the second feeding member has a length L2. When a length of the developing opening is L3, a shortest length from the developing opening to the shaft member is L4, and a length from the developer carrying member to the shaft member is L5, the following relationships are satisfied: L1<L3<L2, and L4<R1<L5.

Abstract: 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 angle range.

Abstract: 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.

Abstract: Provided is a developer container that accommodates developer, including: a first frame that has a recessed portion; and a second frame that has a first protruding portion, wherein the first frame and the second frame are joined by a first adhering portion in which the recessed portion and the first protruding portion are welded together, and a second adhering portion in which a second protruding portion and a flat portion are welded together, the recessed portion having a positioning inner side face that performs positioning of the first frame and the second frame within a recessed portion. Also provided are a method to manufacture a developer container, a developing apparatus having the developer container, a cleaning apparatus, a process cartridge, and an image forming apparatus.

Abstract: A developing device includes: a developer carrying member; a developer container including a developer accommodating portion, a developing opening and a developing chamber; and a developer supplying member including a shaft member and a feeding member. The feeding member includes a first feeding portion having a length L1 and a radius R1, and includes a second feeding portion having a length L2 and a radius R2. When a length of the developing opening is L3, a shortest length from the developing opening to the rotation center of the shaft member is L4, and a length from the developer carrying member to the rotation center of the shaft member is L5, the following relationships are satisfied: L1<L3<L2, and L4<R1<L5.

Abstract: An object is to smoothly convey toner from a developer containing chamber to a developing chamber even when an opening that provides communication between the developer containing chamber and the developing chamber has a connecting part for adding strength to the apparatus. A sheet member that conveys a developer from an opening to the outside of a developer containing chamber has an entering portion that is formed by a first slit extending from a free end of the sheet member and positioned to cross a connecting part as viewed in a direction orthogonal to a longitudinal direction of a shaft member. The entering portion is configured to enter the outside of the developer containing chamber from the inside of the developer containing chamber. The entering portion overlaps in position with the connecting part as viewed in the direction orthogonal to the longitudinal direction of the shaft member.

Abstract: Provided is a developer container that accommodates developer, including: a first frame that has a recessed portion; and a second frame that has a first protruding portion, wherein the first frame and the second frame are joined by a first adhering portion in which the recessed portion and the first protruding portion are welded together, and a second adhering portion in which a second protruding portion and a flat portion are welded together, the recessed portion having a positioning inner side face that performs positioning of the first frame and the second frame within a recessed portion. Also provided are a method to manufacture a developer container, a developing apparatus having the developer container, a cleaning apparatus, a process cartridge, and an image forming apparatus.

Abstract: 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.