An according to an aspect, a paper feed device includes a device body and a paper feed cassette inserted into the device body along an insertion direction. The paper feed device includes a lock lever mounted to the paper feed cassette via a lever shaft; a spring that applies a rotational force which rotates the lock lever in an engagement direction; and a lock member provided at the device body.

A control member 76 for controlling transmission and blocking of a rotational force by a clutch is rotatably supported by a supporting member which supports a developing frame. a locking portion provided on the control member 76 rotates between a position retracted from a locked portion of the clutch and a position for engaging with the locked portion.

A rotating body to be inserted with a shaft includes a holding portion on an end portion of the rotating body to hold the rotating body on the shaft. The holding portion includes a hook to be elastically deformable and detachably hook on a recess of an end portion of the shaft. The holding portion is rotatingly movable, with elastic deformation of the hook, over a convex portion of the shaft that is outside the recess in an axial direction of the shaft.

An example image forming apparatus includes a toner cartridge, a photoconductive cartridge including a photosensitive drum, a development cartridge including a toner inlet portion and rotatable between a first position at which a developing roller is close to the photosensitive drum and a second position at which the developing roller is apart from the photosensitive drum, with respect to a hinge axis that is parallel to an axial direction of the developing roller and between the developing roller and the toner inlet portion, a buffer unit including a toner discharge portion to receive toner from the toner cartridge and to supply the toner to the development cartridge, and a toner supply duct connecting the toner discharge portion to the toner inlet portion, the toner supply duct being rotatably connected to the toner discharge portion in a direction allowing rotation of the development cartridge between the first and the second position.

An imaging system includes a main body to accommodate a roller, and a lubricant unit. The lubricant unit includes a casing having an opening and a lubricant storage disposed inside the casing to store a lubricant. The casing is pivotably connected to the main body to displace the casing between a closed position and an open position. In the closed position, the lubricant storage is positioned to bring the lubricant in contact with the roller through the opening, and the pivotable connection is disposed below the casing. In the open position, the opening is exposed to an outside of the main body, and the opening of the casing is disposed upward.

An image forming apparatus includes a housing, a top cover having an opening, a process cartridge attachable to the housing, a toner cartridge attachable to the process cartridge, and an interlocking mechanism. The top cover is pivotally movable between a first position closing the opening and a second position opening the opening. In a state where the toner cartridge is attached to the process cartridge, the toner cartridge is pivotally movable between an attachment/detachment position where the toner cartridge is attachable to and detachable from the process cartridge; and a fixed position where the toner cartridge is fixed to the process cartridge. The interlocking mechanism is configured to pivotally move the toner cartridge to the attachment/detachment position when the top cover is moved to the second position, and to pivotally move the toner cartridge to the fixed position when the top cover is moved to the first position.

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 example image forming apparatus includes a coupling device to perform coupling or decoupling between the image forming apparatus and a consumable, a sensor to sense an opening of a cover of the image forming apparatus, and a processor. When receiving an opening sensing signal of the cover from the sensor, the processor determines whether the consumable coupled to the image forming apparatus corresponds to a consumable access condition, and based on a result of determination, transmits a signal requesting decoupling of the consumable corresponding to the consumable access condition to the coupling device.

An image forming apparatus includes an image bearing member, an apparatus body including a transfer member movable between a first position and a second position, an opening/closing member. The apparatus body includes a movement mechanism configured to move the transfer member in accordance with a movement of the opening/closing member. The movement mechanism includes a first movable member and a second movable member. The first movable member is configured to move a first end portion of the transfer member from the first position to the second position. The second movable member is configured to move a second end portion of the transfer member from the first position to the second position.

An image forming apparatus includes a photosensitive drum, an LED unit, and a housing. The LED unit is configured to expose the photosensitive drum. The LED unit has a light emitting surface. The housing includes a discharge portion and a discharge tray. The discharge portion has a discharge opening configured to discharge a sheet. The sheet discharged from the discharge opening is placed on the discharge tray. The discharge tray has a cleaning opening for cleaning the light emitting surface of the LED unit. The LED unit is configured to move between: a first position at which the LED unit exposes the photosensitive drum; and a second position at which the light emitting surface is closer to the cleaning opening than a state where the LED unit is located at the first position.