Fluctuations in chargeability in an initial state are expected to be small. If a charging member is new, an image forming apparatus performs a supply operation for supplying a developer or a lubricant prior to an image forming operation in such a manner that the developer or the lubricant adheres to a surface of the charging member.

Fluctuations in chargeability in an initial state are expected to be small. If a charging member is new, an image forming apparatus performs a supply operation for supplying a developer or a lubricant prior to an image forming operation in such a manner that the developer or the lubricant adheres to a surface of the charging member.

In a developer conveyance device, a spiral screw is arranged inside a spiral coil such that the spiral coil and the spiral screw are both rotated. Accompanied by rotation of the spiral coil, even if waste toner tries to pass through the spiral coil and move in a vertical direction, movement of the waste toner in the vertical direction is blocked by the spiral screw, such that the waste toner is conveyed by the spiral screw. Since the waste toner hardly passes through the spiral coil in the vertical direction, the waste toner is also conveyed by the spiral coil.

A first cartridge support is configured to support a drum cartridge. The first cartridge support is configured to move in a first direction between a first position at which the drum cartridge is mounted on a housing and a second position at which the drum cartridge is detachable. A second cartridge support is configured to support a development cartridge. The second cartridge support is configured to move in the first direction between a third position at which the development cartridge is mounted on the drum cartridge and a fourth position at which the development cartridge is detachable. In a state where the second cartridge support is located at the third position, the second cartridge support is located between the first cartridge support located at the first position and a cover located at a closed position with respect to the first direction.

A first cartridge support is configured to support a drum cartridge. The first cartridge support is configured to move in a first direction between a first position at which the drum cartridge is mounted on a housing and a second position at which the drum cartridge is detachable. A second cartridge support is configured to support a development cartridge. The second cartridge support is configured to move in the first direction between a third position at which the development cartridge is mounted on the drum cartridge and a fourth position at which the development cartridge is detachable. In a state where the second cartridge support is located at the third position, the second cartridge support is located between the first cartridge support located at the first position and a cover located at a closed position with respect to the first direction.

An image forming device includes a housing; a conveying belt, and a retaining member. The retaining member retains image bearing members that juxtaposed with and spaced apart from one another. The retaining member is slidingly movable relative to the housing in a direction that the image bearing members are juxtaposed. The retaining member retains the image bearing members to confront the conveying belt. The image bearing members and the conveying belt are arranged in a reference direction. The retaining member includes a cleaning member that removes residual developing agent from the conveying belt, and a guide unit that guides the recording medium to the conveying belt. The guide unit is located on the image bearing member side and the cleaning member is located on the conveying belt side. At least part of the guide unit overlaps at least part of the cleaning member when projected in the reference direction.

A cleaning device includes a cleaning blade disposed in contact with a rotator, a toner collecting section disposed along the rotator and the cleaning blade and includes a groove extending in an axial direction of the rotator, a conveyor disposed in the groove, and an agitator disposed on a side of a rim of the groove. The conveyor rotates to convey the toner in a longitudinal direction of the groove. The agitator vibrates through contact with the conveyor and includes comb-tooth portions lined in a comb shape in the longitudinal direction of the groove, and bent portions, each of which is bent from an end of one of the comb-tooth portions. The comb-tooth portions contact a circumference of the conveyor to vibrate. The bent portions are lined at intervals smaller than intervals on a base side of the comb-tooth portions.

A cartridge includes a rotating body, a blade that extends in an axial direction of the rotating body and is disposed on the rotating body, a supporting member that is fixed to the blade and configured to support the blade in such a manner that the blade protrudes toward the rotating body in a shorter direction crossing the axial direction, a frame body including a placing surface that supports the supporting member, and a fixed portion that is disposed on the placing surface via the supporting member and fixed to the frame body. The supporting member includes a cut portion extending in the axial direction. The fixed portion includes a deformed portion deformed by given energy, and the deformed portion engages with the cut portion so that movement of the supporting member with respect to the frame body is restricted.

An image forming apparatus includes a main body casing; a first drum unit including a first photosensitive drum configured to rotate about an axis extending in a first direction; a second drum unit including a second photosensitive drum configured to rotate about an axis extending in the first direction; a belt; a cleaning member configured to clean the belt; an auger configured to convey waste toner cleaned by the cleaning member; a first toner cartridge including a first new toner containing unit configured to supply new toner and a waste toner containing unit configured to contain the waste toner conveyed by the auger; and a second toner cartridge including a second new toner containing unit configured to supply new toner to the second drum unit. The waste toner containing unit is aligned with the first new toner containing unit in a second direction perpendicular to the first direction.

An image forming apparatus includes a main body casing; a first drum unit including a first photosensitive drum configured to rotate about an axis extending in a first direction; a second drum unit including a second photosensitive drum configured to rotate about an axis extending in the first direction; a belt; a cleaning member configured to clean the belt; an auger configured to convey waste toner cleaned by the cleaning member; a first toner cartridge including a first new toner containing unit configured to supply new toner and a waste toner containing unit configured to contain the waste toner conveyed by the auger; and a second toner cartridge including a second new toner containing unit configured to supply new toner to the second drum unit. The waste toner containing unit is aligned with the first new toner containing unit in a second direction perpendicular to the first direction.