Abstract: In a developing cartridge, a first supporting member is attached to a housing and has a first developing supporting portion and a driving-force-receiving-member supporting portion. The first developing supporting portion is configured to rotatably support a first part of a rotational shaft and the driving-force-receiving-member supporting portion is configured to rotatably support a driving-force-receiving member. The second supporting member is attached to the housing and has a second developing supporting portion and a detection-rotational-body supporting portion. The second developing supporting portion is configured to rotatably support a second part of the rotational shaft and the detection-rotational-body supporting portion is configured to rotatably support a detection rotational body.

Abstract: In a developing cartridge, a first supporting member is attached to a housing and has a first developing supporting portion and a driving-force-receiving-member supporting portion. The first developing supporting portion is configured to rotatably support a first part of a rotational shaft and the driving-force-receiving-member supporting portion is configured to rotatably support a driving-force-receiving member. The second supporting member is attached to the housing and has a second developing supporting portion and a detection-rotational-body supporting portion. The second developing supporting portion is configured to rotatably support a second part of the rotational shaft and the detection-rotational-body supporting portion is configured to rotatably support a detection rotational body.

Abstract: A cartridge includes a shutter that opens and closes when the cartridge is attached and detached to a developing unit or image forming apparatus. The cartridge includes a casing having a chamber with a first opening at one end portion allowing toner to flow out of the casing. The cartridge includes a cover that covers the first opening, movable with the casing and having a second opening allowing toner to flow out of the cover. The shutter is located at the one end portion and has a protrusion further from the one end portion than the cover. The developing unit supports the protrusion when the cartridge is mounted thereon, and the casing pivots with the cover relative to the developing unit between a first position where the shutter closes the second opening and a second position where a third opening of the shutter overlaps the second opening.

Abstract: Toner cartridge includes a housing, an agitator, an auger, a first protrusion, and a second protrusion. The housing includes a first toner accommodating portion having and a second toner accommodating portion. The auger is rotatable about a second axis extending in a first direction and is configured to convey toner from a first toner accommodating portion to the second toner accommodating portion. The first protrusion is positioned at a first side of the second toner accommodating portion. The first protrusion extends in the first direction. The second protrusion is positioned at a second side of the second toner accommodating portion and extends in the first direction.

Abstract: 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.

Abstract: A toner cartridge includes a casing, a toner conveyance unit, a cover, and a first protrusion. The casing includes a first toner-accommodating section having a first internal space for accommodating toner. The first toner-accommodating section has a first opening. The toner conveyance unit is rotatable and configured to convey toner from the first internal space to the first opening. The cover covers the first opening and has a second opening for allowing toner to be discharged therethrough. The cover has a circumferential surface at which a plurality of gear teeth is provided. The gear teeth are configured to move a developing shutter provided at a developing unit for opening or closing an opening of the developing unit. The first protrusion is configured to release the developing shutter from a locking member of the developing unit for locking the developing shutter.

Abstract: 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.

Abstract: A developer cartridge may include: a first gear having a small-diameter gear portion and a large-diameter gear portion; and a second gear including: a first columnar portion centered on a second axis; a second columnar portion having a smaller diameter than the first columnar portion; a first engagement portion extending along a portion of a peripheral surface of the first columnar portion and engageable with the small-diameter gear portion; a second engagement portion extending along a portion of a peripheral surface of the second columnar portion and positioned closer to a housing than the first engagement portion in an axial direction and engageable with the large-diameter gear portion; and a protruding portion protruding in the axial direction and rotatable together with the first engagement portion and the second engagement portion. The second engagement portion may engage the large-diameter gear portion after the first engagement portion engages the small-diameter gear portion.

Abstract: A developing cartridge may include: a casing; a first gear; and a second gear. The first gear may include: a small-diameter gear portion and a large-diameter gear portion. The second gear may include: a first columnar portion; a second columnar portion; a first engaging portion; a second engaging portion; and a protrusion. The first engaging portion may be provided at the first columnar portion and may be engageable with the small-diameter gear portion. The second engaging portion may be provided at the second columnar portion and positioned closer than the first engaging portion to the casing in the axials direction. The second engaging portion may be engageable with the large-diameter gear portion. The protrusion may be rotatable together with the first and second engaging portions. The second engaging portion may be engageable with the large-diameter gear portion after the first engaging portion has engaged with the small-diameter gear portion.

Abstract: A developer cartridge including a first gear having a first engagement part provided along a circumferential surface of the first gear, and a first trigger protruding from the circumferential surface, and a second gear having a small diameter gear part configured to be engaged to the first engagement part, a large diameter gear part rotatable together with the small diameter gear part, and a second trigger configured to contact and rotate the first gear, wherein the large diameter gear part is configured to receive a driving force and rotate to thus move from a first position at which the large diameter gear part can rotate relative to the second trigger to a second position at which the large diameter gear part rotates together with the second trigger, and wherein the second trigger is configured to rotate together with the large diameter gear part to thus contact the first trigger.

Abstract: A process cartridge including: a photosensitive member cartridge including a photosensitive member; and a developing cartridge including a developer carrier. The developing cartridge further includes: an inputting portion; a first cover; and a second cover. The first cover has a first engagement portion configured to move the developer carrier away from the photosensitive member. The first engagement portion is positioned between an axis of the developer carrier extending in an axial direction and an axis of the inputting portion extending in the axial direction, when projected in the axial direction. The second cover has a second engagement portion configured to move the developer carrier away from the photosensitive member. The second engagement portion is positioned between the axis of the developer carrier and the axis of the inputting portion, when projected in the axial direction.

Abstract: In a developing cartridge, a first supporting member is attached to a housing and has a first developing supporting portion and a driving-force-receiving-member supporting portion. The first developing supporting portion is configured to rotatably support a first part of a rotational shaft and the driving-force-receiving-member supporting portion is configured to rotatably support a driving-force-receiving member. The second supporting member is attached to the housing and has a second developing supporting portion and a detection-rotational-body supporting portion. The second developing supporting portion is configured to rotatably support a second part of the rotational shaft and the detection-rotational-body supporting portion is configured to rotatably support a detection rotational body.

Abstract: In a developing cartridge, a first supporting member is attached to a housing and has a first developing supporting portion and a driving-force-receiving-member supporting portion. The first developing supporting portion is configured to rotatably support a first part of a rotational shaft and the driving-force-receiving-member supporting portion is configured to rotatably support a driving-force-receiving member. The second supporting member is attached to the housing and has a second developing supporting portion and a detection-rotational-body supporting portion. The second developing supporting portion is configured to rotatably support a second part of the rotational shaft and the detection-rotational-body supporting portion is configured to rotatably support a detection rotational body.

Abstract: A process cartridge including: a photosensitive member cartridge including a photosensitive member; and a developing cartridge including a developer carrier. The developing cartridge further includes: an inputting portion; a first cover; and a second cover. The first cover has a first engagement portion configured to move the developer carrier away from the photosensitive member. The first engagement portion is positioned between an axis of the developer carrier extending in an axial direction and an axis of the inputting portion extending in the axial direction, when projected in the axial direction. The second cover has a second engagement portion configured to move the developer carrier away from the photosensitive member. The second engagement portion is positioned between the axis of the developer carrier and the axis of the inputting portion, when projected in the axial direction.

Abstract: In a developing cartridge, a first supporting member is attached to a housing and has a first developing supporting portion and a driving-force-receiving-member supporting portion. The first developing supporting portion is configured to rotatably support a first part of a rotational shaft and the driving-force-receiving-member supporting portion is configured to rotatably support a driving-force-receiving member. The second supporting member is attached to the housing and has a second developing supporting portion and a detection-rotational-body supporting portion. The second developing supporting portion is configured to rotatably support a second part of the rotational shaft and the detection-rotational-body supporting portion is configured to rotatably support a detection rotational body.

Abstract: There is provided an image forming apparatus including a main body and a process cartridge including a photosensitive body cartridge and a developing cartridge. The photosensitive body cartridge includes a photosensitive body and a waste developing agent storage container. The developing cartridge includes a developing agent carrier. The photosensitive body cartridge is configured to receive the developing cartridge such that the developing cartridge is attached to and detached from the photosensitive body cartridge through a particular space defined in the main body. The process cartridge is configured to pivot, with respect to the main body, between a first position, in which the waste developing agent storage container is positioned outside the particular space entirely, and a second position, in which the waste developing agent storage container at least partially occupies the particular space.

Abstract: A process cartridge including: a photosensitive member cartridge including a photosensitive member; and a developing cartridge including a developer carrier. The developing cartridge further includes: an inputting portion; a first cover; and a second cover. The first cover has a first engagement portion configured to move the developer carrier away from the photosensitive member. The first engagement portion is positioned between an axis of the developer carrier extending in an axial direction and an axis of the inputting portion extending in the axial direction, when projected in the axial direction. The second cover has a second engagement portion configured to move the developer carrier away from the photosensitive member. The second engagement portion is positioned between the axis of the developer carrier and the axis of the inputting portion, when projected in the axial direction.

Abstract: There is provided an image forming apparatus including a main body, a cover, a photosensitive body cartridge, and a developing cartridge. The main body includes a supporting portion and the developing cartridge includes a supported portion. The supporting portion and the supported portion are configured such that the developing cartridge is pivotable relative to the main body about a third axis, which is parallel to a first axis and is separate from a second axis, between a first position, in which the developer carrier is away from the photosensitive body, and a second position, in which developer carrier is close to the photosensitive body. The cover includes a pressing member configured to press the developing cartridge in a direction perpendicular to the third axis such that the developer cartridge pivots from the first position to the second position.

Abstract: There is provided an image forming apparatus including a main body and a process cartridge including a photosensitive body cartridge and a developing cartridge. The photosensitive body cartridge includes a photosensitive body and a waste developing agent storage container. The developing cartridge includes a developing agent carrier. The photosensitive body cartridge is configured to receive the developing cartridge such that the developing cartridge is attached to and detached from the photosensitive body cartridge through a particular space defined in the main body. The process cartridge is configured to pivot, with respect to the main body, between a first position, in which the waste developing agent storage container is positioned outside the particular space entirely, and a second position, in which the waste developing agent storage container at least partially occupies the particular space.

Abstract: A developing cartridge is provided for use with an image forming apparatus and may include a housing, a developing roller rotatably provided in the housing, and a developing roller gear configured to rotate integrally with the developing roller. Further, the developing cartridge can include a driving input gear configured to receive an external driving force and apply the received driving force to the developing roller gear. The driving input gear can be meshed with the developing roller gear or an intermediate gear can be provided to mesh with the developing roller gear and the driving input gear. Such an intermediate gear can be configured to apply the received driving force to the developing roller gear. Also, the developing cartridge can include a receiving member which is disposed between the housing and the developing roller gear and between the housing and the driving input gear.