A waste toner container is attachable to and detachable from a housing of an image-forming apparatus through an opening of the housing. The waste toner container includes a casing and a guide pipe connected to the casing. The casing has a first end and a second end positioned opposite to the opening with respect to the first end in a state where the waste toner container is attached to the housing. The guide pipe is pivotally movable relative to the casing between a first position and a second position. The guide pipe extends in a first direction connecting the first end to the second end at the first position, while extends in a second direction crossing the first direction at the second position. The guide pipe at the first position has a length in the second direction smaller than a length thereof in the second direction at the second position.

An image forming apparatus includes an image bearing member for bearing a toner image to form a toner image, an intermediary transfer belt onto which the toner image is transferred, a first detachable collecting container to collect residual toner discharged from the image forming portion, and a second detachable collecting container to collect the residual toner discharged from the image forming portion. The first and second collecting containers are provided below a lower surface of the intermediary transfer belt and disposed side by side in a widthwise direction perpendicular to a rotational axis direction of the image bearing member, and at least a part of the first and second collecting containers overlap with the intermediary transfer belt as viewed in the vertical direction. In addition, a length of each of the first and second collecting containers in the widthwise direction is longer than the length in a height direction.

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 is provided. The image forming apparatus includes a chassis having an opening, a cover, photosensitive members, an intermediate transfer belt, a primary-transfer member, a secondary-transfer roller, a cleaner device, an external-sheet inlet, a waste toner container, a connector, and a conveying roller, which is arranged within the feeding path to feed the recording sheet inserted through the external-sheet inlet in the feeding path. The conveying roller is mounted on the waste toner container and removable from the chassis along with the waste toner container.

A toner conveyance device includes a conveyance path including a flowing-in portion to receive toner and a discharge portion to discharge the toner, a conveying screw to convey the toner from the flowing-in portion to the discharge portion, and a toner loosener disposed in at least one of the flowing-in portion and the discharge portion. The toner loosener includes at least one loosening portion to be vibrated by contact with the conveying screw and a support to cantilever the loosening portion. The loosening portion includes a first contact portion and a second contact portion disposed farther than the first contact portion from the support. A distance from the support to the second contact portion is longer than a distance from the support to the first contact portion in a longitudinal direction of the conveying screw.

An image forming apparatus includes a main frame, a plurality of process cartridges, a cartridge-supporting body, a belt, a waste toner cartridge, a contact-separation mechanism, and a collective conveying unit. Each process cartridge includes a photosensitive drum and a drum cleaning unit collecting waste toner on the drum. The cartridge-supporting body is movable between an internal position inside the frame and an external position outside the frame. The belt confronts the process cartridges in the internal position. The waste toner cartridge accommodates the waste toner collected from the drums. The contact-separation mechanism moves the cartridge-supporting body between a contact position where the drums are in contact with the belt and a separated position where the drums are out of contact with the belt. The collective conveying unit aggregates waste toner collected from drums and conveys collectively the aggregated waste toner to the waste toner cartridge.

A process cartridge having a drum cartridge and a toner cartridge is provided. The drum cartridge includes a photosensitive drum, a cleaner, a conveyer tube, a developing roller, and a developing device. The toner cartridge is attachable to the drum cartridge and is located on a side of the developing roller opposite to the photosensitive drum in an attaching direction. The toner cartridge includes a waste toner container to store the toner conveyed through the conveyer tube and a toner container to store the toner to be supplied to the photosensitive drum. The toner container communicates with a developing chamber in the developing device and is located at least partly between the waste toner container and the developing chamber. The conveyer tube extends in the attaching direction and is arranged to overlap the photosensitive drum, the toner container, and the waste toner container in a view along an axial direction.

A toner conveying device includes a toner conveying passage through which toner is conveyed, a conveying screw, and a brush member. The conveying screw includes a rotary shaft rotatably arranged inside the toner conveying passage and a helical blade formed on the outer circumferential face of the rotary shaft. The brush member has a number of brush bristles that swing while in contact with the outer circumferential face of the conveying screw and that are planted at a predetermined interval along the axial direction of the conveying screw. On the brush member, the blush bristles planted at one place are composed of one to three fibers, and the blush bristles are planted parallel to each other at a predetermined interval of 0.5- to 3 mm.

An image forming apparatus is provided. The image forming apparatus includes a chassis having an opening, a cover, photosensitive members, an intermediate transfer belt, a primary-transfer member, a secondary-transfer roller, a cleaner device, an external-sheet inlet, a waste toner container, a connector, and a conveying roller, which is arranged within the feeding path to feed the recording sheet inserted through the external-sheet inlet in the feeding path. The conveying roller is mounted on the waste toner container and removable from the chassis along with the waste toner container.

An image forming apparatus includes a main frame, a plurality of process cartridges, a cartridge-supporting body, a belt, a waste toner cartridge, a contact-separation mechanism, and a collective conveying unit. Each process cartridge includes a photosensitive drum and a drum cleaning unit collecting waste toner on the drum. The cartridge-supporting body is movable between an internal position inside the frame and an external position outside the frame. The belt confronts the process cartridges in the internal position. The waste toner cartridge accommodates the waste toner collected from the drums. The contact-separation mechanism moves the cartridge-supporting body between a contact position where the drums are in contact with the belt and a separated position where the drums are out of contact with the belt. The collective conveying unit aggregates waste toner collected from drums and conveys collectively the aggregated waste toner to the waste toner cartridge.