An image forming apparatus includes an image supporter, a development unit, a cleaning unit, a collection unit, and a controller. The collection unit includes a collection path where a developer discharge path for transport of a waste developer from a discharger of the development unit and a toner discharge path for transport of waste toner from the cleaning unit merge with each other, and collects the waste developer including the waste toner and waste carrier. A place of a high flow resistance is formed at least partially at the collection path. If the weight ratio of the waste carrier to the waste toner included in the waste developer in the collection path is less than a predetermined value, the controller performs carrier discharge process of moving the carrier from the development unit to the image supporter and removing and discharging the carrier using the cleaning unit during non-image formation.

An image forming apparatus includes: a main body casing having an opening; a cover movable between a closing position to close the opening and an opening position to open the opening; and a process cartridge detachably attachable to the main body casing through the opening while the cover is at the opening position. The process cartridge includes: a photosensitive drum; a developing device; a toner receiving part; and a toner conveying part. The toner receiving part has a first end portion and a second end portion. The first end portion has a receiving opening for receiving toner. When the cover is at the closing position and the process cartridge is in the attached state, the first end portion is outside the main body casing while the second end portion is inside the main body casing. The toner conveying part conveys toner in the toner receiving part to the developing device.

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 driving unit is controlled so that a driving state where an image bearing member is driven with a first potential difference formed between a brush member and the image bearing member at a contact portion where the image bearing member is in contact with the brush member transitions to a stopped state where the image bearing member stops being driven with a second potential difference formed, the second potential difference having an absolute value less than that of the first potential difference.

A driving unit is controlled so that a driving state where an image bearing member is driven with a first potential difference formed between a brush member and the image bearing member at a contact portion where the image bearing member is in contact with the brush member transitions to a stopped state where the image bearing member stops being driven with a second potential difference formed, the second potential difference having an absolute value less than that of the first potential difference.

A toner conveying device for conveying toner, comprising: a first conveying portion; and a second conveying portion conveying the toner conveyed from the first conveying portion. The first conveying portion further includes: a first screw which includes a first rotation shaft and a first blade portion, the first screw including an engaging portion and a first protruded portion on a first end portion; and a first conveying passage forming member having a first inner wall face which forms a first conveying passage. The second conveying portion includes: a second screw which includes a second rotation shaft and a second blade portion, the second screw including an engaged portion and a second protruded portion on a second end portion; and a second conveying passage forming member having a second inner wall face which forms a second conveying passage, and which is connected with the first conveying passage forming member.

A cleaning device includes a housing, a cleaning blade, a toner conveyance path, a conveyance screw, and a first flicker. The conveyance screw includes a rotary shaft and a helical vane. The first flicker includes a first base portion and first contact pieces and uses the first contact pieces to press the conveyance screw in a first direction away from a bottom part of the toner conveyance path. The first base portion includes a secured portion and a blade opposed portion. A reinforcement member is stacked on the blade opposed portion.

The present invention provides a process cartridge and an electronic imaging device. The process cartridge includes a cartridge body having an accommodating cavity; a developing roller rotatably installed in the accommodating cavity; a photosensitive drum rotatably installed in the cartridge body; a charging roller that is in contact with a peripheral surface of the photosensitive drum and is spaced from the developing roller; and a cleaning member that is located in the accommodating cavity and installed in the cartridge body, extends in a direction parallel to the charging roller, and is in contact with a peripheral surface of the charging roller. The developing roller is in contact with the peripheral surface of the photosensitive drum. The electronic imaging device includes a machine body, and the foregoing process cartridge is detachably installed thereon. The present invention can increase the utilization rate of toner and reduce abrasion of the photosensitive drum.

An image forming apparatus includes an apparatus main body, a process cartridge, a scanner unit, and a toner cartridge. The process cartridge is detachably mounted on the apparatus main body. The process cartridge includes: a photosensitive drum configured to rotate about a rotational axis extending in a first direction; and a development unit configured to supply toner to the photosensitive drum. The toner cartridge is configured to store toner. At least part of the photosensitive drum, at least part of the scanner unit, and at least part of the toner cartridge are aligned in a second direction in this order. The second direction is perpendicular to both the first direction and to a vertical direction. The at least part of the photosensitive drum, the at least part of the scanner unit, and the at least part of the toner cartridge overlap one another as viewed from the second direction.

An image forming apparatus includes an apparatus main body, a process cartridge, a scanner unit, and a toner cartridge. The process cartridge is detachably mounted on the apparatus main body. The process cartridge includes: a photosensitive drum configured to rotate about a rotational axis extending in a first direction; and a development unit configured to supply toner to the photosensitive drum. The toner cartridge is configured to store toner. At least part of the photosensitive drum, at least part of the scanner unit, and at least part of the toner cartridge are aligned in a second direction in this order. The second direction is perpendicular to both the first direction and to a vertical direction. The at least part of the photosensitive drum, the at least part of the scanner unit, and the at least part of the toner cartridge overlap one another as viewed from the second direction.