An image forming apparatus includes a photosensitive drum, a developing device, a toner container, a cleaner, a waste toner container, and a waste toner conveying pipe. The cleaner is configured to clean a peripheral surface of the photosensitive drum after a toner image has been transferred to the printing medium. The waste toner container is configured to accommodate therein waste toner removed from the peripheral surface of the photosensitive drum by the cleaner. The waste toner conveying pipe is configured to convey the waste toner from the cleaner to the waste toner container. The cleaner is located between the photosensitive drum and the fixing device in a vertical direction. The developing device is located below the photosensitive drum. The waste toner container is located below the cleaner. The toner container covers at least a part of an upper surface of the waste toner container.

An image forming apparatus includes: a main casing; a photosensitive drum rotatable about an axis extending in a first direction; a developing cartridge; a transfer unit; a solvent cartridge accommodating solvent for dissolving toner; an applicator applying the solvent to the toner on a sheet; and a cover movable between an open position and a closed position. The developing cartridge and the solvent cartridge are detachably attachable to the main casing independently of each other. The developing cartridge and the solvent cartridge are positioned between the applicator and the cover in a second direction crossing the first direction, and the solvent cartridge is positioned closer to the applicator than the developing cartridge is to the applicator in a state where the developing cartridge and the solvent cartridge are attached to the main casing and the cover is at the closed 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 may include a photosensitive member, a developing device including a developing roller, pressing members configured to engage with the developing device and springs configured to urge the pressing members. In some examples, each of the pressing members may be configured to contact and move the developing device between various positions based on the urging of the springs. Additionally or alternatively, various ends of a contact surface of the developing roller configured to contact developer may be disposed relative to an axis line of the developing roller and pressing surfaces of the pressing members.

A process cartridge comprises a photosensitive drum and a developing roller. A coupling member is provided adjacent to one axial end of the developing roller. The coupling member includes a driven portion, and an intermediary portion configured and positioned to engage with the driven portion. The intermediary portion is also configured to be movable relative to the driven portion in a direction crossing the axis of the developing roller while maintaining engagement with the driven portion. The coupling member further includes a driving portion configured and positioned to receive a driving force for rotating the developing roller. The driving portion is also configured to engage with the intermediary portion, and to be movable relative to the intermediary portion in a direction crossing the axis of the developing roller while maintaining engagement with the intermediary portion.

Disclosed is a process cartridge detachably mounted to an image forming device having a tray (13) and force applying components (60, 61). The process cartridge comprises: a process cartridge frame; a photosensitive unit (31); a developing unit (41) rotatable relative to the photosensitive unit (31), wherein the process cartridge frame has a driving side and a conductive side disposed oppositely along a length direction, and the driving side is provided with a first driving force receiving portion (10) for driving a photosensitive drum (30) to rotate and a second driving force receiving portion (11) for driving a developing roller (42) to rotate; and a force receiving portion (85) for receiving force of the force applying components (60, 61) so that the developing unit (41) rotates relative to the photosensitive unit (31), wherein the force receiving portion (85) has a separating force receiving portion (8504) for receiving the force of the force applying components (60, 61) so that the developing unit (41) rotates relative to the photosensitive unit (31), and in a process of the process cartridge being pushed into to an image forming device with the tray (13), the force receiving portion (85) can receive the force of the force applying components (60, 61) and move at least in a left-and-right direction and/or an up-and-down direction.

A process cartridge comprises a photosensitive drum and a developing roller. A coupling member is provided adjacent to one axial end of the developing roller. The coupling member includes a driven portion, and an intermediary portion configured and positioned to engage with the driven portion. The intermediary portion is also configured to be movable relative to the driven portion in a direction crossing the axis of the developing roller while maintaining engagement with the driven portion. The coupling member further includes a driving portion configured and positioned to receive a driving force for rotating the developing roller. The driving portion is also configured to engage with the intermediary portion, and to be movable relative to the intermediary portion in a direction crossing the axis of the developing roller while maintaining engagement with the intermediary portion.

An image forming apparatus includes a photosensitive drum, a developing device, a toner container, a cleaner, a waste toner container, and a waste toner conveying pipe. The cleaner is configured to clean a peripheral surface of the photosensitive drum after a toner image has been transferred to the printing medium. The waste toner container is configured to accommodate therein waste toner removed from the peripheral surface of the photosensitive drum by the cleaner. The waste toner conveying pipe is configured to convey the waste toner from the cleaner to the waste toner container. The cleaner is located between the photosensitive drum and the fixing device in a vertical direction. The developing device is located below the photosensitive drum. The waste toner container is located below the cleaner. The toner container covers at least a part of an upper surface of the waste toner container.

The image forming apparatus includes a cartridge replaceable by detachably mounting to the image forming apparatus, a door that takes a closed state or an open state, a locking pin that switches a state of the regulation unit between a regulating state in which the replacement unit is prevented to be detached from the image forming apparatus and a release state in which the replacement unit is to be detachable from the image forming apparatus, and a lock control unit (a control unit) that makes a determination as to whether or not the state of the regulation unit is to be switched from the release state to the regulating state, at a predetermined timing when initial processing is completed after a power source is turned on or a state of the door becomes the closed state from the open state.

A process cartridge is detachably mountable to a main assembly of an electrophotographic image forming apparatus. The cartridge includes an electrophotographic photosensitive drum, a developing roller, a drum unit containing the drum, a developing unit containing the roller and being movable so the roller contacts and is spaced from the drum, and a first force receiver receiving a force from a main-assembly first force applier by movement of a door from open to closed positions when mounting the cartridge and a second force receiver movable from a stand-by position by movement of the first force receiver by a force received from the first force applier. The second force receiver takes a projected position receiving a force from the second force applier to move the developing unit so the roller moves out of contact with the drum, the projected position being higher than the stand-by position.