A system for an electrophotographic image forming device includes a basket for holding multiple toner cartridges. A guide rail assembly operatively connected to an access door moves between a raised position and a lowered position to raise and lower the basket when the access door moves between an open position and a closed position. The basket is slidable along the guide rail assembly into and out of the image forming device when the guide rail assembly is in the raised position, and is in an operational position within the image forming device when the guide rail assembly is in the lowered position. A rail lock mechanism locks the access door in the open position when the guide rail assembly is in the raised position and the basket is extended out of the image forming device and unlocks the access door from the open position when the basket is inserted.

An image forming apparatus includes: a drawer movable in a first direction from an inside position to an outside position via an intermediate position; a stopper movable between a first position at which the stopper stops the drawer from moving from the intermediate position to the outside position, and a second position at which the stopper allows the drawer to move from the intermediate position to the outside position; a drum cartridge including a photoconductive drum and mountable on the drawer; and a developing cartridge including a developing roller and mountable on the drawer. The developing cartridge mounted on the drawer is removable from the drawer in a state in which the drawer is located at the intermediate position. The drum cartridge mounted on the drawer is removable from the drawer in a state in which the drawer is located at the outside position.

An image forming apparatus includes a first unit dismountably mounted on a main body frame and a locking mechanism releasably holding the first unit mounted. The locking mechanism has a handle portion, a lock member, and a preloading member. The handle portion is on the first unit, and is movable to and fro in the mounting and dismounting directions of the first unit. The lock member is swingably on the first unit, and has a hook portion engageable with an engaged portion formed on the main body frame. The preloading member preloads the lock member in a first direction in which the hook portion engages with the engaged portion. As the handle portion is moved in the dismounting direction, the lock member swings in a second direction opposite to the first direction against the preloading force of the preloading member to disengage the hook portion from the engaged portion.

An image forming apparatus includes a development cartridge, a main body including an intermediate transfer belt, a tray to mount the development cartridge and to move between a drawing position drawn from the main body and a mounting position inserted into the main body, a support member to support the development cartridge, the support member supported by the tray and movable in a first direction toward the intermediate transfer belt and movable in a second direction opposite to the first direction, a support spring to apply an elastic force in the second direction to the support member, and a link member to move the support member in the first direction in correspondence with an operation of the tray being inserted from the drawing position toward the mounting position.

A pair of slide rails supports a unit on inner side surfaces of a housing in a drawable manner. Each of the pair of slide rails includes a fixed rail, an intermediate rail, and a moving rail. The fixed rail is fixed on the inner side surface along a draw-in direction and a draw-out direction. The intermediate rail is engaged with the fixed rail in a slidable manner. The moving rail is fixed on the unit and engaged with the intermediate rail in a slidable manner. The intermediate rail includes a base part and an upper edge part and a lower edge part respectively bent inward from an upper end and a lower end of the base part. The base part has an extended part formed in such a manner that the lower edge part is protruded from a front end portion of the base part in the draw-out direction.

An image-forming apparatus includes: a main casing; a drawer movable in a first direction relative to the main casing; a process cartridge detachably mountable on the drawer; and a toner cartridge detachably mountable on the drawer. The drawer is movable between: an inner position where the drawer is accommodated in the main casing; and an outer position where a part of the drawer is located outside the main casing. The process cartridge includes: a photosensitive drum rotatable about an axis extending in a second direction crossing the first direction when the process cartridge is mounted on the drawer; and a developing device configured to supply toner to the photosensitive drum. The toner cartridge is configured to store the toner.

An image forming apparatus to form a toner image on a recording material includes a photosensitive member and an optical scanning unit. The optical scanning unit includes an optical scanning unit, an optical box, a cover member, and a moving unit movable to an outside of the image forming apparatus. The optical scanning unit and the moving unit are arranged so that the moving unit and the optical scanning unit are opposed to each other when the moving unit is located in an inside of the image forming apparatus. The optical scanning unit is disposed so as to allow a user to touch the optical scanning unit through a space generated in the inside of the image forming apparatus when the moving unit is moved to the outside of the image forming apparatus. Between the optical box and the cover member, the cover member is opposed to the moving unit.

A first protrusion is provided between an operation lever and a lock lever. The operation lever is for moving a pressure roller. The lock lever is provided for a sheet guide member for guiding a sheet that has passed through a fixing unit downstream in the sheet conveyance direction. The lock lever is for locking the sheet guide member at a position where the sheet guide member is engaged with a housing. The first protrusion protrudes from the sheet guide member toward an exterior cover. The first protrusion is provided with a second protrusion on the lock lever side of the first protrusion.

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.

An image forming apparatus includes a main body housing, a drawer, a drum cartridge, and a toner cartridge. The drawer includes a waste toner conveying pipe and a lock member. In a state where the toner cartridge is mounted on the drum cartridge, the drum cartridge is mounted on the drawer, the drawer is located at a drawn-out position, and the lock member is located at a lock position, the toner cartridge is detachable from the drum cartridge.