Abstract: A rotating force transmitting part for an electrophotographic photosensitive drum for a main assembly of the electrophotographic image forming apparatus, wherein the main assembly of the electrophotographic image forming apparatus includes a driving shaft, to be driven by a motor, having the rotating force applying portion, and wherein the electrophotographic photosensitive drum is dismountable from the main assembly of the electrophotographic image forming apparatus in a direction substantial perpendicular with an axial direction of the driving shaft, the rotating force transmitting part includes a coupling member engageable with the rotational force applying portion to receive a rotational force for rotating the electrophotographic photosensitive drum in the state in which electrophotographic photosensitive drum is mounted to the main assembly of the electrophotographic image forming apparatus, wherein the coupling member being capable of taking a rotational force transmitting angular position for transmitt

Abstract: A cartridge detachably mountable to a main assembly of an image forming apparatus includes a drum unit including a photosensitive drum; a developing unit including a developing roller, a driving force receiving portion, and a development gear; a driving train for transmitting the driving force to the development gear. The developing roller is movable between a contact position and spacing position relative to the drum. The driving train includes a first driving portion connected with the driving force receiving portion and a second driving portion for transmitting the driving force toward the gear. When the developing unit is in the contact position, the first and second driving portions are connected with each other to transmit the driving force from the first driving portion to the second driving portion, and when the developing unit is in the spacing position, the first and the driving portion are not connected.

Abstract: A process cartridge, a combination of a process cartridge and a drive shaft of an electrophotographic image forming apparatus, and a method of mounting and using a process cartridge in an electrophotographic image forming apparatus include a feature wherein a coupling member of the process cartridge can take different angular positions relative to the drive shaft's fixed axis of rotation. In one position, an axis of the coupling member is inclined relative to the drive shaft's fixed axis of rotation. In a second position, the axis of the coupling member is substantially coaxial with the drive shaft's fixed axis of rotation.

Abstract: A process cartridge includes a photosensitive drum and a coupling member operatively connected to the photosensitive drum. The coupling member is movable between a position in which an axis of the coupling member is substantially coaxial with an axis of the photosensitive drum and a position in which the axis of the coupling member is not substantially coaxial with the axis of the photosensitive drum.

Abstract: A process cartridge, combination of a process cartridge and a drive shaft of an electrophotographic image forming apparatus, and a method of mounting and using a process cartridge in an electrophotographic image forming apparatus include a feature that a coupling member of the process cartridge can take different angular positions relative to the fixed axis of rotation of the drive shaft. In one position, the axis of the coupling member is inclined relative to the drive shaft's fixed axis of rotation. In another position, the axis of the coupling member is substantially coaxial with the drive shaft's fixed axis of rotation.

Abstract: A developing device usable with an electrophotographic image forming apparatus, the apparatus including a driving shaft rotatable by a motor and having a rotating force applying portion, and a movable member, the developing device being mountable to the movable member, and the developing device being movable in a direction substantially perpendicular to an axial direction of the driving shaft in response to movement of the movable member in one direction with the developing device mounted to the movable member, the developing device includes i) a developing roller for developing an electrostatic latent image formed on an electrophotographic photosensitive drum, the developing roller being rotatable about an axis; and ii) a coupling member for transmitting a rotating force to the developing roller, the coupling member including, a rotating force receiving portion engageable with the rotating force applying portion to receive a rotating force from the driving shaft, and a rotating force transmitting portion for

Abstract: An image forming apparatus includes a photosensitive member unit and a supporting member supporting a developer cartridge and movable between an inside position, wherein the supporting member is movable to the outside position independently from the photosensitive member unit. When the supporting member is in the inside position, the photosensitive member unit and the cartridge are disposed at positions overlapping with each other, and by the cartridge rotating about a coupling during the supporting member moving to the outside position, the cartridge is displaced from a first position taken when the supporting member is in the inside position to a second position in which the cartridge does not interfere with the photosensitive member unit when the supporting member is moved the outside position independently from the photosensitive member unit which remains inside the main assembly.

Abstract: A rotating force transmitting part for an electrophotographic photosensitive drum for a main assembly of the electrophotographic image forming apparatus, wherein the main assembly of the electrophotographic image forming apparatus includes a driving shaft, to be driven by a motor, having the rotating force applying portion, and wherein the electrophotographic photosensitive drum is dismountable from the main assembly of the electrophotographic image forming apparatus in a direction substantial perpendicular with an axial direction of the driving shaft, the rotating force transmitting part includes a coupling member engageable with the rotational force applying portion to receive a rotational force for rotating the electrophotographic photosensitive drum in the state in which electrophotographic photosensitive drum is mounted to the main assembly of the electrophotographic image forming apparatus, wherein the coupling member being capable of taking a rotational force transmitting angular position for transmitt

Abstract: A cartridge for use with a main assembly of an electrophotographic image forming apparatus, the main assembly including a driving shaft having a rotational force applying portion, wherein the cartridge is dismountable from the main assembly in a direction substantially perpendicular to an axial direction of the driving shaft, the cartridge including i) a developing roller for developing an electrostatic latent image formed on an electrophotographic photosensitive drum, the developing roller being rotatable about an axis thereof; and ii) a coupling member engageable with the rotational force applying portion to receive a rotational force for rotating the developing roller, the coupling member being capable of taking a rotational force transmitting angular position for transmitting the rotational force for rotating the developing roller to the developing roller and a disengaging angular position in which the coupling member is inclined away from the rotational force transmitting angular position, wherein when t

Abstract: An electrophotographic photosensitive drum unit usable in a process cartridge includes a cylinder having a photosensitive layer at an outer periphery thereof and an axis L1. A drum flange is provided at one end of the cylinder, with the drum flange including a recess formed on an inside thereof and a gear portion provided along an outer surface of the drum flange. A detachable member is detachably attached to the drum flange and overlaps parts of the recess as seen along a direction of the axis L1, with the detachable member being provided within the drum flange in the direction of the axis L1.

Abstract: A cartridge for use with a main assembly of an electrophotographic image forming apparatus, the main assembly including a driving shaft having a rotational force applying portion, wherein the cartridge is dismountable from the main assembly in a direction substantially perpendicular to an axial direction of the driving shaft, the cartridge including i) a developing roller for developing an electrostatic latent image formed on an electrophotographic photosensitive drum, the developing roller being rotatable about an axis thereof; and ii) a coupling member engageable with the rotational force applying portion to receive a rotational force for rotating the developing roller, the coupling member being capable of taking a rotational force transmitting angular position for transmitting the rotational force for rotating the developing roller to the developing roller and a disengaging angular position in which the coupling member is inclined away from the rotational force transmitting angular position, wherein when t

Abstract: A process cartridge includes a casing and developer contained within the casing. The process cartridge also includes a photosensitive drum having an axis L1, with the photosensitive drum being rotatably supported in the casing to permit rotation about the axis L1, and a developing roller having an axis L1?, with the developing roller being configured to develop a latent image formed on the photosensitive drum with the developer, and with the developing roller being rotatably supported in the casing to permit rotation about the axis L1?. A coupling member is operatively connected to the photosensitive drum, the coupling member including a body having an axis L2, and the coupling member including at least one projection provided at an end of the body.

Abstract: A developing device includes a developing frame including a developing chamber, an accommodating chamber accommodating toner, and a partition wall provided with an opening connecting the developing chamber and the accommodating chamber. The developing device further includes an agitating member agitating the developer in the accommodating chamber, a shaft member including an attachment portion to which the agitating member is attached, and a conveying sheet conveying the toner. The conveying sheet includes a fixed portion fixed to the inner wall of the developing frame forming the accommodating chamber, and a displacement portion that is movable toward the opening by coming into contact with the agitating member. The rotation center of the shaft member is provided within an imaginary circle centered at the boundary point between the fixed portion and the displacement portion and passing through the distal end of the displacement portion.

Abstract: A photosensitive member unit includes photosensitive drums and a frame including positioning portions. One and the other end shaft portions of the photosensitive drums are movable between first positions in which the above-mentioned one and the other end shaft portions are positioned by the positioning portions and second positions in which the above-mentioned one end of the other end shaft portions are not positioned by said positioning portions. The photosensitive member unit includes a plurality of mounting portions which are provided in the frame and to which developing units including developing members capable of supplying toner to the photosensitive drums are mountable, and from which the developing units are dismountable without dismounting the photosensitive drums from the frame, in a state that the above-mentioned one and the other end shaft portions are positioned by the positioning portions.

Abstract: A developing device that is useable with an electrophotographic image forming apparatus includes a developing roller for developing an electrostatic latent image formed on an electrophotographic photosensitive drum. The developing device also includes a coupling member for transmitting a rotating force to the developing roller.

Abstract: An image forming apparatus includes a drum unit and including a photosensitive drum; a cartridge including a coupling for receiving a driving force and a container accommodating a developer and a supporting member for supporting the cartridge and movable between an inside position in which the cartridge is mounted to the main assembly and an outside position outside the main assembly. In the inside position, the drum unit and the cartridge are disposed at positions mutually overlapping as seen in a moving direction of the supporting member. By the cartridge rotating about a rotation axis of the coupling relative to the supporting member during the supporting member moving from the inside position to the outside position, the cartridge is displaced from a first position to a position not interfering with the drum unit when the supporting member is moved from the inside position to the outside position.

Abstract: An image forming apparatus cartridge comprises a guide member, a developer roller having an axis L1, and a coupling member having an axis L2, with the coupling member including at least one projection. A relative positioning of the coupling member and the guide member is changeable between a first relative position in which a tip of the at least one projection is a first distance away from an end of the guide member as measured in the direction of the axis L1 and a second relative position in which the tip of the at least one projection is a second distance away from the end of the guide member as measured in the direction of the axis L1, with the first distance being greater than the second distance.

Abstract: An image forming apparatus cartridge includes a casing including an opening and an arc-shaped protrusion that is adjacent to the opening. The image forming apparatus cartridge also includes a developer roller having an axis L1 and a coupling member having an axis L2. The coupling member includes (i) a first end portion operatively connected with the developer roller, (ii) a second end portion including at least one projection that is open to the axis L2, and (iii) a connecting portion connecting the first end portion and the second end portion. A maximum distance as measured from the axis L2, in a direction perpendicular to the axis L2, of at least part of the connecting portion is shorter than a distance between the at least one projection and the axis L2.

Abstract: A drum unit includes a photosensitive drum having an axis L1, a drum flange provided at an end of the photosensitive drum, and a coupling member having an axis L2. The coupling member includes (i) a first end portion connected to the drum flange, (ii) a second end portion including at least one projection, and (iii) a connecting portion connecting the first end portion and the second end portion. The coupling member is movable between (i) a first position in which a tip of the at least one projection is a first distance away from the photosensitive drum as measured in the direction of the axis L1 and (ii) a second position in which the tip of the at least one projection is a second distance away from the photosensitive drum as measured in the direction of the axis L1.