Abstract: A drum unit includes: a frame; a first photosensitive drum; a second photosensitive drum; a charger; and a storage medium. The frame includes: a first frame plate; a second frame plate spaced apart from the first frame plate in a first direction; a third frame plate connecting one end of the first frame plate to one end of the second frame plate; and a fourth frame plate connecting another end of the first frame plate to another end of the second frame plate. The first photosensitive drum and the second photosensitive drum are rotatably supported by the frame. The second photosensitive drum is spaced apart from the first photosensitive drum and positioned closer to the third frame plate than the first photosensitive drum to the third frame plate in a second direction. The storage medium has an electrical contact surface positioned at an outer surface of the third frame plate.

Abstract: A photosensitive drum is rotatably supported in a main body. A developing cartridge is detachably mountable on the main body in a state where the photosensitive drum is supported in the main body. The developing cartridge includes a developing device and a frame. The developing device includes a developing roller disposed in confrontation with the photosensitive drum to supply developer to the photosensitive drum when the developing cartridge is mounted in the main body, and a developer-accommodating portion configured to accommodate developer. The frame includes a waste-developer-accommodating portion configured to accommodate waste developer and supports the developing device that is movable relative to the frame. The frame is disposed on an opposite side of the developing roller from the photosensitive drum. An urging member is disposed between the frame and the developing device to urge the developing roller toward the photosensitive drum.

Abstract: A photosensitive drum is rotatably supported in a main body. A developing cartridge is detachably mountable on the main body in a state where the photosensitive drum is supported in the main body. The developing cartridge includes a developing device and a frame. The developing device includes a developing roller disposed in confrontation with the photosensitive drum to supply developer to the photosensitive drum when the developing cartridge is mounted in the main body, and a developer-accommodating portion configured to accommodate developer. The frame includes a waste-developer-accommodating portion configured to accommodate waste developer and supports the developing device that is movable relative to the frame. The frame is disposed on an opposite side of the developing roller from the photosensitive drum. An urging member is disposed between the frame and the developing device to urge the developing roller toward the photosensitive drum.

Abstract: A drum unit includes: a frame; a first photosensitive drum; a second photosensitive drum; a charger; and a storage medium. The frame includes: a first frame plate; a second frame plate spaced apart from the first frame plate in a first direction; a third frame plate connecting one end of the first frame plate to one end of the second frame plate; and a fourth frame plate connecting another end of the first frame plate to another end of the second frame plate. The first photosensitive drum and the second photosensitive drum are rotatably supported by the frame. The second photosensitive drum is spaced apart from the first photosensitive drum and positioned closer to the third frame plate than the first photosensitive drum to the third frame plate in a second direction. The storage medium has an electrical contact surface positioned at an outer surface of the third frame plate.

Abstract: A photosensitive drum is rotatably supported in a main body. A developing cartridge is detachably mountable on the main body in a state where the photosensitive drum is supported in the main body. The developing cartridge includes a developing device and a frame. The developing device includes a developing roller disposed in confrontation with the photosensitive drum to supply developer to the photosensitive drum when the developing cartridge is mounted in the main body, and a developer-accommodating portion configured to accommodate developer. The frame includes a waste-developer-accommodating portion configured to accommodate waste developer and supports the developing device that is movable relative to the frame. The frame is disposed on an opposite side of the developing roller from the photosensitive drum. An urging member is disposed between the frame and the developing device to urge the developing roller toward the photosensitive drum.

Abstract: An electronic module includes a circuit board having a mounting surface; a heat generating component mounted on the mounting surface; a frame supporting the circuit board; a cover covering the heat generating component and the mounting surface; and a heatsink mounted on the mounting surface. The heatsink includes at least one wall including a particular wall to which the heat generating component is attached. The heatsink further includes a shade portion provided at the at least one wall. The shade portion is located between the cover and the heat generating component in a direction perpendicular to the mounting surface.

Abstract: 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 extending 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.

Abstract: A drum unit includes: a frame; a first photosensitive drum; a second photosensitive drum; a charger; and a storage medium. The frame includes: a first frame plate; a second frame plate spaced apart from the first frame plate in a first direction; a third frame plate connecting one end of the first frame plate to one end of the second frame plate; and a fourth frame plate connecting another end of the first frame plate to another end of the second frame plate. The first photosensitive drum and the second photosensitive drum are rotatably supported by the frame. The second photosensitive drum is spaced apart from the first photosensitive drum and positioned closer to the third frame plate than the first photosensitive drum to the third frame plate in a second direction. The storage medium has an electrical contact surface positioned at an outer surface of the third frame plate.

Abstract: 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.

Abstract: A drum unit includes: a frame; a first photosensitive drum; a second photosensitive drum; a charger; and a storage medium. The frame includes: a first frame plate; a second frame plate spaced apart from the first frame plate in a first direction; a third frame plate connecting one end of the first frame plate to one end of the second frame plate; and a fourth frame plate connecting another end of the first frame plate to another end of the second frame plate. The first photosensitive drum and the second photosensitive drum are rotatably supported by the frame. The second photosensitive drum is spaced apart from the first photosensitive drum and positioned closer to the third frame plate than the first photosensitive drum to the third frame plate in a second direction. The storage medium has an electrical contact surface positioned at an outer surface of the third frame plate.

Abstract: A photosensitive drum is rotatably supported in a main body. A developing cartridge is detachably mountable on the main body in a state where the photosensitive drum is supported in the main body. The developing cartridge includes a developing device and a frame. The developing device includes a developing roller disposed in confrontation with the photosensitive drum to supply developer to the photosensitive drum when the developing cartridge is mounted in the main body, and a developer-accommodating portion configured to accommodate developer. The frame includes a waste-developer-accommodating portion configured to accommodate waste developer and supports the developing device that is movable relative to the frame. The frame is disposed on an opposite side of the developing roller from the photosensitive drum. An urging member is disposed between the frame and the developing device to urge the developing roller toward the photosensitive drum.

Abstract: An electric apparatus includes a casing, a power supply, a frame, and a fan. The power supply is accommodated in the casing, and includes a power supply board and a power supply component mounted on a mounting surface of the power supply board. The frame is disposed outward of the power supply within the casing. The frame is formed with a through-hole extending therethrough, and has a first part and a second part. The first part is made from a flame retardant resin, and constitutes at least a part of the ambient portion surrounding the through-hole. The at least a part of the ambient portion is positioned at a side the same as the power supply component with respect to the mounting surface. At least a part of the second part is made from a material having flame retardancy lower than that of the flame retardant resin.

Abstract: A photosensitive drum is rotatably supported in a main body. A developing cartridge is detachably mountable on the main body in a state where the photosensitive drum is supported in the main body. The developing cartridge includes a developing device and a frame. The developing device includes a developing roller disposed in confrontation with the photosensitive drum to supply developer to the photosensitive drum when the developing cartridge is mounted in the main body, and a developer-accommodating portion configured to accommodate developer. The frame includes a waste-developer-accommodating portion configured to accommodate waste developer and supports the developing device that is movable relative to the frame. The frame is disposed on an opposite side of the developing roller from the photosensitive drum. An urging member is disposed between the frame and the developing device to urge the developing roller toward the photosensitive drum.

Abstract: A sheet feeding device having sheet feed tray configured to support multiple sheets be movably inserted to a main body. A sheet feed roller is configured to contact the sheet supported by the sheet feed tray and rotate to apply a feeding force to feed the sheet in a sheet feed direction. The sheet feed roller is configured to contact the sheet feed tray when there is no sheet on the sheet feed tray. A push latch mechanism is arranged on a downstream side with respect to the sheet feed roller in the sheet feed direction. A state of the push latch mechanism is alternately switched between an engaged state and a disengaged state every time when a pressing force is applied to the push latch mechanism. A first spring is configured to exert an elastic force to move the sheet feed tray toward a near side.

Abstract: An electric apparatus includes a casing, a power supply, a frame, and a fan. The power supply is accommodated in the casing, and includes a power supply board and a power supply component mounted on a mounting surface of the power supply board. The frame is disposed outward of the power supply within the casing. The frame is formed with a through-hole extending therethrough, and has a first part and a second part. The first part is made from a flame retardant resin, and constitutes at least a part of the ambient portion surrounding the through-hole. The at least a part of the ambient portion is positioned at a side the same as the power supply component with respect to the mounting surface. At least a part of the second part is made from a material having flame retardancy lower than that of the flame retardant resin.

Abstract: A sheet feeding device having sheet feed tray configured to support multiple sheets be movably inserted to a main body. A sheet feed roller is configured to contact the sheet supported by the sheet feed tray and rotate to apply a feeding force to feed the sheet in a sheet feed direction. The sheet feed roller is configured to contact the sheet feed tray when there is no sheet on the sheet feed tray. A push latch mechanism is arranged on a downstream side with respect to the sheet feed roller in the sheet feed direction. A state of the push latch mechanism is alternately switched between an engaged state and a disengaged state every time when a pressing force is applied to the push latch mechanism. A first spring is configured to exert an elastic force to move the sheet feed tray toward a near side.

Abstract: An image forming apparatus, including image forming units, a pair of frames, an optical scanner, a metal-made first connecting frame, a resin-made second connecting frame, is provided. The first and second connecting frames are formed to be hollow and are coupled to the paired frames at both ends thereof along an axial direction of rotation axes of photosensitive drums contained in the image forming units. The first connecting frame accommodates the optical scanner in the hollow space.

Abstract: An image forming apparatus includes a casing, a photosensitive member, a developing unit, an exposure member including a light emitting element array, a covering member, and a cover operation mechanism. The developing unit includes a developer carrying member configured to carry a developer supplied to the photosensitive member. The exposure unit is configured to expose the photosensitive member to form a latent image on the photosensitive member. The covering member is configured to move between a cover position where the covering member covers the exposure member between the photosensitive member and the exposure member and a retracted position where the covering member is retracted from between the photosensitive member and the exposure member. The cover operation mechanism is configured to hold the covering member in the retracted position at least when the exposure member forms the latent image on the photosensitive member.

Abstract: A photosensitive drum is rotatably supported in a main body. A developing cartridge is detachably mountable on the main body in a state where the photosensitive drum is supported in the main body. The developing cartridge includes a developing device and a frame. The developing device includes a developing roller disposed in confrontation with the photosensitive drum to supply developer to the photosensitive drum when the developing cartridge is mounted in the main body, and a developer-accommodating portion configured to accommodate developer. The frame includes a waste-developer-accommodating portion configured to accommodate waste developer and supports the developing device that is movable relative to the frame. The frame is disposed on an opposite side of the developing roller from the photosensitive drum. An urging member is disposed between the frame and the developing device to urge the developing roller toward the photosensitive drum.

Abstract: An image forming apparatus, including a main body and a driving force transmission, is provided. The main body supports an image forming unit which includes an image carrier. The driving force transmission transmits a driving force to the image carrier. The main body includes a first frame, a second frame, and a connecting member. The first frame is made of resin, disposed on one side of the image carrier with regard to a direction of rotation axis of the image carrier, and supports the driving force transmission disposed thereon. The second frame is made of metal and disposed on the other side of the image carrier with regard to the direction of rotation axis. The connecting member connects the first frame and the second frame with each other.