A process cartridge, comprising: a drum cartridge; and a waste toner case, the drum cartridge comprising: a development roller; a first side wall to support one end of a shaft of the development roller; a second wall to support the other end of the shaft; a photosensitive drum; a cleaner; and a conveying tube, the conveying tube comprising: a first part disposed on an opposite side of the second side wall with respect to the first side wall in an axis direction, the first part being connected to the cleaner; a second part disposed closer to the second side wall relative to the first part and connected to the waste toner case; and a third part connecting the first part with the second part, wherein a direction in which the waste toner case is attached is equal to a direction in which the second part extends.

A process cartridge including a drum cartridge, a developing cartridge, and a waste toner container, is provided. The drum cartridge includes a photosensitive drum including a photosensitive layer and a rotation axis extending in an axial direction, a drum cleaner arranged to contact the photosensitive drum, a cleaner frame configured to accommodate the drum cleaner therein, and a waste toner conveyer tube connected with the cleaner frame. The developing cartridge is movable to be attached to and detached from the drum cartridge and includes a developer roller. The waste toner container is movable to be attached to and detached from the drum cartridge. When the developing cartridge and the waste toner container are attached to the drum cartridge, the waste toner container is connected with the waste toner conveyer tube and is located on an opposite side of the developing cartridge to the photosensitive drum.

An image-forming apparatus includes an apparatus body and a process cartridge attachable to and detachable from the apparatus body. The apparatus body includes a sheet-feed roller and a body wall. The process cartridge includes: a photosensitive drum; a drum frame; a developing roller; a cleaner; a conveying pipe and a waste-toner container for storing waste toner removed from the photosensitive drum by the cleaner and conveyed by the conveying pipe. The waste-toner container is detachably mountable on the drum frame. The waste-toner container mounted on the drum frame is positioned opposite to the photosensitive drum with respect to the developing roller. The body wall of the apparatus body and a container wall of the waste-toner container constitute a part of a sheet-conveying guide for guiding conveyance of a sheet from the sheet-feed roller toward the photosensitive drum when the process cartridge is attached to the apparatus body.

An image forming apparatus includes: a housing; a process cartridge including a photoconductive drum and a developing roller; a toner cartridge containing toner; and a drawer movable between an inner position and an outer position. The process cartridge includes a lock member movable between a lock position at which the lock member locks the process cartridge to the drawer, and a release position at which a lock between the process cartridge and the drawer is released. The lock member is located at the lock position in a state in which the process cartridge is mounted to the drawer, and the toner cartridge is mounted to the process cartridge. The lock member is located at the release position in a state in which the process cartridge is mounted to the drawer, and the toner cartridge is removed from the process cartridge.

A process cartridge comprises an electrophotographic photosensitive drum having a photosensitive layer at a peripheral surface thereof, and process means actable on the electrophotographic photosensitive drum. The process cartridge also includes a coupling member capable of taking a rotational force transmitting angular position for transmitting the rotational force for rotating the electrophotographic photosensitive drum to the electrophotographic photosensitive drum and a disengaging angular position in which the coupling member is inclined away from the axis of the electrophotographic photosensitive drum from the rotational force transmitting angular position.

A unit includes a part that is detachably attachable relative to an other unit, wherein the other unit includes an opening through which image forming powder is supplied from or received by the other unit, and a shutter that opens and closes the opening, and a collecting member that collects the image forming powder falling from at least one of the opening and the shutter by making contact with the shutter when detaching the unit from the other unit.

An image-forming apparatus includes: a housing formed with an opening part; and a process cartridge detachably attachable to the housing through the opening part in a first direction. The housing includes a first support part arranged at the opening part, and a cover movable between a closed position and an opened position. The cover includes a second support part positioned away from the first support part in the first direction when the cover is at the opened position. The process cartridge includes: a drum cartridge having a drum frame; and a toner cartridge detachably attachable to the drum frame. When the cover is at the opened position, the first support part and the second support part are configured to support the drum frame of the process cartridge detached from the housing to restrict displacement of the drum frame in the first direction.

Movement and/or urging of a developer carrying member is carried out with high precision.

A cartridge that is mountable to an apparatus main assembly of an image forming apparatus, the cartridge includes a developing roller; a frame supporting the developing roller; a movable part movably supported by the frame and movable to a first position and to a second position relative to the frame; and an elastic part provided between the frame and the movable part to urge the movable part. The movable part includes a first force receiving part that receives force from the apparatus main assembly, in a direction of moving from the first position to the second position, and a second force receiving part that receives force from the apparatus main assembly, in a direction of moving from the second position to the first position. When the movable part receives force from the apparatus main assembly at the first force receiving part and is at the second position, the movable part receives urging force from the elastic part in a direction of moving the movable part from the second position to the first position.

A process cartridge includes a photosensitive member and a developing unit. The developing unit includes a frame to store toner, a developing roller to carry the toner, a side seal to contact an end portion of the developing roller and prevent the toner from leaking out, and a sealing sheet to contact a center portion of the developing roller and prevent the toner from leaking out. A toner receiving portion of the frame includes an opening facing the developing roller and is disposed on an upstream side of the side seal and a downstream side of a contact portion where the developing roller contacts the photosensitive member, and moreover is disposed at a position overlapping with the side seal. The developing unit includes a blocking member to block at least a part of the opening, and the blocking member is disposed between the opening and the developing roller.

An image forming device, including: a housing; a drawer movable between an inside position at which the drawer is located inside the housing and an outside position at which the drawer is located outside the housing; a drum cartridge including a photoconductive drum and a developer roller and mountable on the drawer; a toner cartridge storing toner to be supplied to the developer roller and mountable on the drawer, wherein the drawer includes a first guide that guides the toner cartridge in mounting the toner cartridge on the drawer, and wherein the drum cartridge includes a second guide connected to the first guide in a state in which the drum cartridge is mounted on the drawer, the second guide being configured to guide the toner cartridge in mounting the toner cartridge on the drawer in the state in which the drum cartridge is mounted on the drawer.