Abstract: An apparatus body includes an elastic body-side terminal, which is a terminal for supplying electricity to a cartridge. The cartridge includes: a developing apparatus that develops as a developer image an electrostatic latent image formed on an image bearing member; a cartridge-side terminal for supplying electricity from the apparatus body; and a frame having an opening that exposes the cartridge-side terminal. In a process of attaching the cartridge to the apparatus body, the body-side terminal makes contact with the cartridge-side terminal by being inserted into the opening. The body-side terminal presses the cartridge-side terminal in a state in which the cartridge is attached to the apparatus body.

Abstract: A cartridge including a photosensitive drum, a cleaning unit that supports the photosensitive drum, a process member that acts on the photosensitive drum, the cartridge being detachable from a main body of the image forming apparatus in a rotational axial direction of the photosensitive drum. The cartridge further including a first position determination position determining a downstream position with respect to the main body in a mounting direction of the photosensitive drum, and a second position determination portion that determines an upstream position with respect to the main body in the mounting direction. Furthermore, in a cross section orthogonal to the mounting direction, a distance from an axis of rotation of the photosensitive drum to the second position determination portion in a predetermined direction is larger than a distance from the axis of rotation to the first position determination portion in the predetermined direction.

Abstract: An erroneous insertion preventing system includes a first cartridge including a first frame provided with a first engaging portion and a first discrimination portion, a second cartridge including a second frame provided with a second discrimination portion, and a main assembly of an image forming apparatus. The main assembly includes a movable member provided with a portion-to-be-engaged engageable with the first engaging portion and a regulating portion having a configuration corresponding to the first discrimination portion. The first cartridge is mounted in the main assembly without movement of the first discrimination portion being limited by the regulating portion. In a case that the second cartridge is attempted to be inserted into the main assembly, by insertion of the second cartridge into the main assembly, the regulating portion and the second discrimination portion interfere with each other to prevent mounting of the second cartridge in the main assembly.

Abstract: A cartridge for an image forming apparatus including a movable member is provided with a first engaging portion and a second engaging portion movable between a first position and a second position. The cartridge includes a first engaged portion engageable with the first engaging portion, and a second engaged portion engageable with the second engaging portion. By the first engaged portion being engaged with the first engaging portion in the process of mounting, the movable member is moved from the first position to the second position to permit the second engaged to pass the second engaging portion in a mounting direction.

Abstract: A process cartridge comprises a photosensitive drum and a developing roller. A coupling member is provided adjacent to one axial end of the developing roller. The coupling member includes a driven portion, and an intermediary portion configured and positioned to engage with the driven portion. The intermediary portion is also configured to be movable relative to the driven portion in a direction crossing the axis of the developing roller while maintaining engagement with the driven portion. The coupling member further includes a driving portion configured and positioned to receive a driving force for rotating the developing roller. The driving portion is also configured to engage with the intermediary portion, and to be movable relative to the intermediary portion in a direction crossing the axis of the developing roller while maintaining engagement with the intermediary portion.

Abstract: A process cartridge comprises a photosensitive drum and a developing roller. A coupling member is provided adjacent to one axial end of the developing roller. The coupling member includes a driven portion, and an intermediary portion configured and positioned to engage with the driven portion. The intermediary portion is also configured to be movable relative to the driven portion in a direction crossing the axis of the developing roller while maintaining engagement with the driven portion. The coupling member further includes a driving portion configured and positioned to receive a driving force for rotating the developing roller. The driving portion is also configured to engage with the intermediary portion, and to be movable relative to the intermediary portion in a direction crossing the axis of the developing roller while maintaining engagement with the intermediary portion.

Abstract: An apparatus body includes an elastic body-side terminal, which is a terminal for supplying electricity to a cartridge. The cartridge includes: a developing apparatus that develops as a developer image an electrostatic latent image formed on an image bearing member; a cartridge-side terminal for supplying electricity from the apparatus body; and a frame having an opening that exposes the cartridge-side terminal. In a process of attaching the cartridge to the apparatus body, the body-side terminal makes contact with the cartridge-side terminal by being inserted into the opening. The body-side terminal presses the cartridge-side terminal in a state in which the cartridge is attached to the apparatus body.

Abstract: A cleaning device for a printer includes a cleaning member including a blade and a supporter having first and second surfaces, and a bent portion connecting them, the blade extending in a longitudinal direction at an end of the first surface opposite from the bent portion; and a resin sealing member provided between the cleaning member and the frame, the sealing member including a first portion between the cleaning member and the frame in a region from the blade to the second surface by way of the first surface along the crossing direction at each of one and the other longitudinal ends of the cleaning member, and a second portion sealing between the second surface and the frame in a region between the first portions at the one and the other ends along the longitudinal direction. The second portion is contacted to the second surface with an inclination.

Abstract: A process cartridge comprises a photosensitive drum and a developing roller. A coupling member is provided adjacent to one axial end of the developing roller. The coupling member includes a driven portion, and an intermediary portion configured and positioned to engage with the driven portion. The intermediary portion is also configured to be movable relative to the driven portion in a direction crossing the axis of the developing roller while maintaining engagement with the driven portion. The coupling member further includes a driving portion configured and positioned to receive a driving force for rotating the developing roller. The driving portion is also configured to engage with the intermediary portion, and to be movable relative to the intermediary portion in a direction crossing the axis of the developing roller while maintaining engagement with the intermediary portion.

Abstract: A cartridge detachably mountable to a main assembly of an image forming apparatus includes an accommodating portion for accommodating a developer, a recess provided in an outer wall of a frame for forming the accommodating portion, and a sheet member provided so as to cover the recess. The sheet member and the recess are configured so that an amount of flexure of the sheet member is larger than that of the recess when the cartridge is gripped at the sheet member.

Abstract: A process cartridge comprises a photosensitive drum and a developing roller. A coupling member is provided adjacent to one axial end of the developing roller. The coupling member includes a driven portion, and an intermediary portion configured and positioned to engage with the driven portion. The intermediary portion is also configured to be movable relative to the driven portion in a direction crossing the axis of the developing roller while maintaining engagement with the driven portion. The coupling member further includes a driving portion configured and positioned to receive a driving force for rotating the developing roller. The driving portion is also configured to engage with the intermediary portion, and to be movable relative to the intermediary portion in a direction crossing the axis of the developing roller while maintaining engagement with the intermediary portion.

Abstract: A developing unit for an electrophotographic image forming apparatus includes a developing roller, having a shaft member, for developing an electrostatic latent image formed on an electrophotographic photosensitive drum using a developer; and a bearing for rotatably supporting the shaft member, the bearing including a bearing base portion of a first resin molded material and a bearing portion of a second resin molded material different from the first resin molded material, the bearing portion having a through-hole, wherein the bearing portion includes a contact portion contacting a stepped abutting portion of the shaft member, and a retaining portion overlapping with the bearing base portion in a direction crossing with an axial direction of the shaft member.

Abstract: A process cartridge is detachably mountable to a main assembly of an image forming apparatus. The process cartridge includes a first unit provided with an image bearing member and a second unit that is provided with a developer carrying member for carrying a developer, with the second unit being connected with the first unit so as to be movable between a contact position in which the developer carrying member is contacted with that image bearing member and a spacing position in which the developer carrying member is spaced from the image bearing member. The second unit includes a recess or opening into which a main assembly electrical contact provided in the main assembly of the apparatus to apply a voltage to the process cartridge when the process cartridge is mounted to the main assembly of the apparatus and second unit is positioned in the spacing position.

Abstract: A cleaning device for a printer includes a cleaning member including a blade and a supporter having first and second surfaces, and a bent portion connecting them, the blade extending in a longitudinal direction at an end of the first surface opposite from the bent portion; and a resin sealing member provided between the cleaning member and the frame, the sealing member including a first portion between the cleaning member and the frame in a region from the blade to the second surface by way of the first surface along the crossing direction at each of one and the other longitudinal ends of the cleaning member, and a second portion sealing between the second surface and the frame in a region between the first portions at the one and the other ends along the longitudinal direction. The second portion is contacted to the second surface with an inclination.

Abstract: A support member disposed in a photosensitive member unit for supporting a photosensitive drum to be movable between an acting position, at which the photosensitive drum is brought into contact with a process unit, and a non-acting position, at which the photosensitive drum is separated from the process unit or is brought into contact with the process unit with a pressure lower than a pressure with which the photosensitive drum contacts the process unit at the acting position is included, and when the developing unit is located at a development position, the photosensitive drum secures the acting position, and when the developing unit is located at a non-development position, the photosensitive drum secures the non-acting position.

Abstract: A cleaning unit including: frame abutment portions each including a first abutment portion and a second abutment portion; support portions each including a first support portion which abuts against the first abutment portion, and a second support portion which abuts against the second abutment portion so as to support a cleaning member in a pivotable manner about the frame abutment portions as a pivot axis; and an urging member configured to urge the cleaning member in a direction in which an elastic member is brought into contact with a photosensitive drum by pivoting the cleaning member.

Abstract: A cartridge for an image forming apparatus including a movable member is provided with a first engaging portion and a second engaging portion movable between a first position and a second position, the cartridge includes a first engaged portion engageable with the first engaging portion; and a second engaged portion engageable with the second engaging portion, wherein by the first engaged portion being engaged with the first engaging portion in the process of mounting, the movable member is moved from the first position to the second position to permit the second engaged to pass the second engaging portion in a mounting direction.

Abstract: A process cartridge detachably mountable to a main assembly of an image forming apparatus, the process cartridge includes a first unit provided with a photosensitive drum, and a second unit provided with a developer carrying member and connected with the first unit so as to be movable between a contact position in which the developer carrying member is contacted with the drum and a spacing position in which the developer carrying member is spaced from the drum. The second unit includes a first contact portion for contacting to a main assembly electrical contact and for receiving a first contact force therefrom, and a second contact portion for contacting to the main assembly electrical contact and for receiving a second contact force therefrom, to electrically connect with the main assembly electrical contact when the cartridge is mounted to the main assembly and the second unit is positioned in the contact position.

Abstract: A process cartridge is detachably mountable to a main assembly of an image forming apparatus. The process cartridge includes a first unit provided with an image bearing member and a second unit that is provided with a developer carrying member for carrying a developer, with the second unit being connected with the first unit so as to be movable between a contact position in which the developer carrying member is contacted with that image bearing member and a spacing position in which the developer carrying member is spaced from the image bearing member. The second unit includes a recess or opening into which a main assembly electrical contact provided in the main assembly of the apparatus to apply a voltage to the process cartridge when the process cartridge is mounted to the main assembly of the apparatus and second unit is positioned in the spacing position.

Abstract: A process cartridge comprises a photosensitive drum and a developing roller. A coupling member is provided adjacent to one axial end of the developing roller. The coupling member includes a driven portion, and an intermediary portion configured and positioned to engage with the driven portion. The intermediary portion is also configured to be movable relative to the driven portion in a direction crossing the axis of the developing roller while maintaining engagement with the driven portion. The coupling member further includes a driving portion configured and positioned to receive a driving force for rotating the developing roller. The driving portion is also configured to engage with the intermediary portion, and to be movable relative to the intermediary portion in a direction crossing the axis of the developing roller while maintaining engagement with the intermediary portion.