An image forming apparatus includes an intermediary transfer belt provided at a position overlapping with an image forming portion as viewed in a vertical direction, a first mounting portion having a mountable first collecting container for collecting residual toner discharged from the image forming portion, and a second mounting portion having a mountable second collecting container for collecting the residual toner. The first and second mounting portions are provided below the intermediary transfer belt and disposed side by side perpendicular to a rotational axis direction of the image bearing member, and wherein as viewed in the vertical direction, the first mounting portion is provided at a position where at least a part of the first mounting portion overlaps with the intermediary transfer belt, and the second mounting portion is provided at a position where at least a part of the second mounting portion overlaps with the intermediary transfer belt.

An image forming apparatus includes: a drawer movable between an inner position and an outer position and supporting a first cartridge including a first photosensitive drum and a first discharge part and a second cartridge including a second photosensitive drum and a second discharge part; and a waste toner box including a first coupling part coupled with the first discharge part and a second coupling part coupled with the second discharge part, in a state where the first cartridge and the second cartridge are supported by the drawer at an inner position and the waste toner box is mounted to the apparatus main body, the waste toner box being movable between a first/second position where the first coupling part and the first discharge part are coupled/decoupled and the second coupling part and the second discharge part are coupled/decoupled.

A cleaning device includes a conveyance member, an agitation member, and an accommodation unit. The conveyance member extends in a width direction of an image bearing member orthogonal to a moving direction of the image bearing member, and conveys toner in the width direction by rotation. The accommodation unit includes a wall portion located inside a rotation orbit of an outermost peripheral portion of the agitation member, downstream of the collection member and upstream of the conveyance member in a rotation direction of the agitation member when viewed in a rotation axis direction of the conveyance member.

A recovery container includes a container body that is removably attached to an attachment target and that is capable of recovering powder; a projection provided at a distance from the container body in a direction intersecting with an attachment direction of the container body and having a slip-off preventing portion that is formed at a portion on a side opposite to an attachment direction side and that is engaged with an engaging part provided at the attachment target; an urging member that is provided between the container body and the projection and that urges the projection away from the container body; and an inclined portion formed at the projection and inclined so as to be gradually separated from the container body, in the attachment direction from the slip-off preventing portion.

A cartridge detachably mountable to a main assembly of an image forming apparatus includes a photosensitive drum; a discharging path for permitting movement of a developer removed from the drum, the discharging path including a developer discharge opening and a movable portion through which the developer is movable and which is movable between a retracted position in an upstream side with respect to a developer moving direction through the discharge opening and a advanced position in a downstream side with respect to the developer moving direction; and a sealing portion for closing the discharging path by contacting the movable portion at a position different from that of the discharge opening.

A cleaning device is provided with: a cleaning component that cleans waste toner from an image holder, the image holder holding, on a surface thereof, a toner image formed by an image forming component and moving in a circulating manner; and a waste toner conveying component that conveys the waste toner toward a waste toner storage unit. The cleaning device has a receiving opening through which waste powder recovered from the image forming component is received, and the waste powder received through the receiving opening is conveyed to the waste toner storage unit by being passed through inside the cleaning device.

The developing device includes a developing roller, a developer conveying unit, a developer discharge unit, and an air discharge port. The developer conveying unit includes a developing chamber provided with the developing roller and extending in a longitudinal direction of the developing roller, a stirring chamber arranged in parallel to the developing chamber, and a barrier wall having a first communication port and a second communication port, at respective ends in the longitudinal direction, to connect the developing chamber with the stirring chamber. The developer discharge unit extends from the developer conveying unit in the longitudinal direction of the developing roller and includes a developer discharge port to discharge excess developer. The air discharge port is to house a filter to filter a developer, the air discharge port being provided between the developer conveying unit and the developer discharge unit to discharge air in the developer conveying unit.

According to one embodiment, an image forming apparatus includes an image forming unit, an environmental sensor, a waste toner collection container, a paddle motor, a storage unit, and a control unit. The image forming unit is configured to forma toner image on a sheet using a toner that is replenished from a toner cartridge containing the toner. The environmental sensor is configured to acquire information regarding an environment around the image forming unit. The waste toner collection container is configured to contain a waste toner produced in the image forming unit. The paddle motor is configured to rotate a stirring paddle provided in the waste toner collection container. The storage unit is configured to store a correction factor corresponding to the information regarding the environment acquired by the environmental sensor. The control unit is configured to acquire a count value as a value relating to a replenishment amount when the toner is replenished from the toner cartridge to the image forming unit. The control unit is configured to correct the count value with the correction factor corresponding to the information regarding the environment. The control unit is configured to update a cumulative count value with the corrected count value. The control unit is configured to drive the paddle motor according to the updated cumulative count value.

A toner conveying device includes a case storing toner; a conveyance member rotatably supported at both ends by the case, including a spiral blade extending along a rotational axis, and configured to rotate to convey the toner inside the case in a predetermined conveying direction; and a pushing member pushed against an outer peripheral portion of the conveyance member in a first direction intersecting with the rotational axis and configured to slide on the outer peripheral portion as the conveyance member rotates. The pushing member is composed of a flexible sheet member and includes a base portion secured at a securing position inside the case and protruding pieces aligned along the rotational axis and protruding from the base portion toward the conveyance member to abut on the outer peripheral portion. An alignment interval between the protruding pieces is different from a pitch of the spiral blade along the rotational axis.

A toner conveying device includes a case that can store therein toner to be conveyed, a conveyance member rotatably supported at both ends thereof by the case and configured to rotate to convey the toner inside the case in a conveying direction set in advance, and a pushing member pushed against the conveyance member and configured to slide on an outer peripheral portion of the conveyance member as the conveyance member rotates. The pushing member includes a first sheet member having flexibility and abutting on the outer peripheral portion in a first direction intersecting with a rotational axis direction of the conveyance member to push the conveyance member and a second sheet member having flexibility and abutting on the outer peripheral portion in a second direction, which is different from the first direction, intersecting with the rotational axis direction to push the conveyance member.