A metal frame of an image forming apparatus includes first and second sheet metal in which the first sheet metal includes a first engaging portion which is provided between first and second plate portions of the first sheet metal and is bent away from the first plate portion in the plate thickness direction of the first plate portion, wherein the first plate portion, the second plate portion, and the first engaging portion are formed integrally with each other. The second sheet metal includes a third plate portion with which the first engaging portion engages and a second engaging portion which is bent away from the third plate portion in a plate thickness direction of the third plate portion and engages with the first plate portion, wherein the second engaging portion is adjacent to the third plate portion. The second sheet metal further includes a third engaging portion which is bent away from the third plate portion and engages with the second plate portion, the third engaging portion being adjacent to the third plate portion. The third plate portion, the second engaging portion, and the third engaging portion are formed integrally with each other.

An image forming device, including: a housing; a drawer movable between an inside position at which the drawer is located inside the housing and an outside position at which the drawer is located outside the housing; a drum cartridge including a photoconductive drum and a developer roller and mountable on the drawer; a toner cartridge storing toner to be supplied to the developer roller and mountable on the drawer, wherein the drawer includes a first guide that guides the toner cartridge in mounting the toner cartridge on the drawer, and wherein the drum cartridge includes a second guide connected to the first guide in a state in which the drum cartridge is mounted on the drawer, the second guide being configured to guide the toner cartridge in mounting the toner cartridge on the drawer in the state in which the drum cartridge is mounted on the drawer.

An image forming apparatus includes a frame having a first metal plate and a second metal plate where the first metal plate has a recess portion. The frame supports an image forming member that forms an image on a sheet. The first metal plate and the second metal plate are positioned to each other and an adhesive is in a space formed between the recess portion and the second metal plate. The space is such that it receives the adhesive by injection.

A process cartridge includes a first unit including an image bearing member configured to carry an electrostatic latent image, and a second unit including a developer bearing member configured to develop the electrostatic latent image carried on the image bearing member into a toner image, the second unit being capable of being mounted on the first unit in a mounting direction. The first unit includes a moving member that moves the second unit mounted on the first unit at a mounting position to a detachment position. The second unit includes a storage unit that stores information about the second unit. The moving member is disposed on a first side of the process cartridge in a longitudinal direction of the image bearing member. An electrode of the storage unit is disposed on a second side of the process cartridge in the longitudinal direction.

An image forming apparatus includes a process unit and a toner cartridge. The toner cartridge includes a cartridge housing having a first shutter and a second shutter. The process unit includes a conveying tube. The cartridge housing is movable between a first position and a second position. The first position is a position in which (a) the first shutter is positioned at a first open position, (b) the second shutter is positioned at a second open position, and (c) a second opening is aligned with the conveying tube in a second direction. The second position is a position in which (a) the first shutter is positioned at a first closed position, (b) the second shutter is positioned at a second closed position, (c) the second opening is spaced apart from the conveying tube, and (d) the toner cartridge is mountable and removable on and from the process unit.

A developing cartridge includes: a casing; a developing roller; a shaft; and a cam. The casing is configured to accommodate developer therein. The developing roller is rotatable about a first axis extending in an axial direction. The shaft extends along a second axis extending in the axial direction. The shaft is movable along the second axis. The cam is movable along the second axis in response to axial movement of the shaft. The cam has a cam surface non-parallel with the second axis.

A photosensitive drum is rotatable about a drum axis extending in a first direction. A frame includes a first side plate located at first end in the first direction and a second side plate spaced from the first side plate in the first direction. The frame rotatably supports the photosensitive drum between the first side plate and the second side plate in the first direction. The frame holds a developer cartridge. A lock lever is pivotable about a pivot axis extending in a second direction intersecting with the first direction. The lock lever is movable between a lock position at which the developer cartridge is locked on the frame and a release position at which the developer cartridge is unlocked from the frame.

A developing cartridge includes a developing roller, a casing, and a cam. The developing roller is configured to be positioned at a contact position where the developing roller is in contact with a photosensitive drum of a drum cartridge. The developing roller is also configured to be positioned at a separated position where the developing roller is separated from the photosensitive drum. The cam is movable relative to the casing between a first position and a second position. A portion of the developing cartridge is in contact with the drum cartridge and functions as a pivot center so that the casing and the developing roller are pivotally moved about the pivot center when the cam is moved from the first position to the second position.

An image forming apparatus includes an image forming device configured to form an image on a sheet, and a cabinet configured to house the image forming device. The image forming device includes a side plate in which an exhaust port is formed, and the cabinet includes an outer side plate facing the side plate of the image forming device, and a positioning part configured to position the image forming device in the cabinet, the positioning part configured to form a space between the side plate of the image forming device and the outer side plate of the cabinet.

An image forming device, including: a housing; a drawer movable between an inside position at which the drawer is located inside the housing and an outside position at which the drawer is located outside the housing; a drum cartridge including a photoconductive drum and a developer roller and mountable on the drawer; a toner cartridge storing toner to be supplied to the developer roller and mountable on the drawer, wherein the drawer includes a first guide that guides the toner cartridge in mounting the toner cartridge on the drawer, and wherein the drum cartridge includes a second guide connected to the first guide in a state in which the drum cartridge is mounted on the drawer, the second guide being configured to guide the toner cartridge in mounting the toner cartridge on the drawer in the state in which the drum cartridge is mounted on the drawer.