Abstract: A developing cartridge includes: a photosensitive unit; a developing unit coupled to the photosensitive unit to be movable between a release position and a developing position; an elastic member to provide an elastic force in a direction to maintain the developing unit at the developing position; a movable member including a gear portion, the movable member and capable of moving to a first position to move the developing unit to the release position and second position to move the developing unit to the developing position; and a switching member connected to a driving gear, wherein as the driving gear rotates in a first direction or a second direction, the switching member is switched between a third position at which the switching member is connected to the gear portion to move the movable member from the second position to the first position and a fourth position at which the switching member is spaced apart from the gear portion to allow the movable member to move from the first position to the second pos

Abstract: A developing cartridge includes: a photosensitive unit; a developing unit coupled to the photosensitive unit to be movable between a release position and a developing position; an elastic member to provide an elastic force in a direction to maintain the developing unit at the developing position; a movable member including a gear portion, the movable member and capable of moving to a first position to move the developing unit to the release position and second position to move the developing unit to the developing position; and a switching member connected to a driving gear, wherein as the driving gear rotates in a first direction or a second direction, the switching member is switched between a third position at which the switching member is connected to the gear portion to move the movable member from the second position to the first position and a fourth position at which the switching member is spaced apart from the gear portion to allow the movable member to move from the first position to the second pos

Abstract: Provided is a development cartridge capable of being detachably attached to a main body of an image forming apparatus, the development cartridge including a developing roller; a driving power receiving member configured to rotate in a first direction or a second direction by receiving a driving power from the main body; and a power delivery member configured to connect the driving power receiving member to the developing roller and to deliver only torque of the driving power receiving member in the first direction to the developing roller.

Abstract: A cartridge that is attached to or detached from a main body of an image forming apparatus. The cartridge includes a memory unit that includes a contact portion via which the cartridge is connected to the main body and is connected to the main body to transmit information of the cartridge to the main body. The contact portion is moved to a first position at which the contact portion is hidden inside the cartridge and a second position at which the contact portions is protruded out of the cartridge to be connected to a connection portion provided in the main body.

Abstract: Provided is a developing cartridge including a photosensitive unit and a developing unit connected to each other to rotate to a developing location and a non-developing location. An elastic member applies an elastic force to the developing unit and the photosensitive unit in a direction of rotating to the developing location. The developing cartridge includes a nip separating portion switched to a nip forming location where the developing unit is located at the developing location and to a nip separating location where the developing unit is located at the non-developing location, a manipulation portion for switching the nip separating portion to the nip forming location and to the nip separating location by a manual manipulation, and a nip forming unit for switching the nip separating portion from the nip separating location to the nip forming location as the photosensitive unit and the developing unit start to operate.

Abstract: Provided is a developing cartridge including a photosensitive unit and a developing unit connected to each other to rotate to a developing location and a non-developing location. An elastic member applies an elastic force to the developing unit and the photosensitive unit in a direction of rotating to the developing location. The developing cartridge includes a nip separating portion switched to a nip forming location where the developing unit is located at the developing location and to a nip separating location where the developing unit is located at the non-developing location, a manipulation portion for switching the nip separating portion to the nip forming location and to the nip separating location by a manual manipulation, and a nip forming unit for switching the nip separating portion from the nip separating location to the nip forming location as the photosensitive unit and the developing unit start to operate.

Abstract: A cartridge that is attached to or detached from a main body of an image forming apparatus, including: a memory unit that includes a contact portion via which the cartridge is connected to the main body and that is connected to the main body to transmit information of the cartridge to the main body; and a moving member on which the contact portion is mounted, wherein the moving unit is moved to a second position where the contact portion is protruded out of the cartridge in order to be connected to a connection portion provided in the main body and a first position that is hidden inside the cartridge.

Abstract: A cartridge that is attached to or detached from a main body of an image forming apparatus, including: a memory unit that includes a contact portion via which the cartridge is connected to the main body and that is connected to the main body to transmit information of the cartridge to the main body; and a moving member on which the contact portion is mounted, wherein the moving unit is moved to a second position where the contact portion is protruded out of the cartridge in order to be connected to a connection portion provided in the main body and a first position that is hidden inside the cartridge.

Abstract: A cartridge that is attached to or detached from a main body of an image forming apparatus. The cartridge includes a memory unit that includes a contact portion via which the cartridge is connected to the main body and is connected to the main body to transmit information of the cartridge to the main body. The contact portion is moved to a first position at which the contact portion is hidden inside the cartridge and a second position at which the contact portions is protruded out of the cartridge to be connected to a connection portion provided in the main body.

Abstract: A developing unit includes a toner storage portion for containing toner and a development portion for containing the toner supplied from the toner storage portion. The development portion includes a developing roller for supplying the toner to a photosensitive body, a supply roller and an auxiliary supply roller. The supply roller and the auxiliary supply roller rotate while facing each other to supply the toner to the developing roller. In the developing unit, an inequality that |D?(R1+R2)|?1.0 mm is satisfied, where a distance between the centers of the auxiliary supply roller and the supply roller in a region where the auxiliary supply roller and the supply roller face each other is D, a radius of the supply roller is R1, and a radius of the auxiliary supply roller is R2.

Abstract: A developing unit includes a toner storage portion containing toner and including a toner supply member, a development portion disposed above the toner storage portion and containing the toner supplied from the toner storage portion by the toner supply member, and including a developing roller and a supply roller to supply the toner to the developing roller, and a partition wall to divide the toner storage portion and the development portion, and including an opening portion disposed under the lowest portion of the supply roller and forming a path of the toner supplied from the toner storage portion to the development portion.

Abstract: An image forming apparatus includes a photoconductor unit, a developing unit to feed a developer to a photoconductor of the photoconductor unit, the developing unit being provided rotatable relative to the photoconductor unit, and a link unit to allow a charging roller of the photoconductor unit to come into contact with or be separated from a photoconductor while in linkage with rotation of the developing unit.

Abstract: A developing unit of an image forming apparatus includes a developer cartridge detachably mounted on the developing unit, a developing case in which a developing member and a first supply member are provided, a developer supply passage to supply a developer stored in the developer cartridge to the developing case, and a developer supplement unit mounted in a portion connecting the developing case and the developer supply passage, to agitate the developer supplied through the developer supply passage and to supply the agitated developer to the developing case.

Abstract: An image forming apparatus includes a photoconductor unit, a developing unit to feed a developer to a photoconductor of the photoconductor unit, the developing unit being provided rotatable relative to the photoconductor unit, and a link unit to allow a charging roller of the photoconductor unit to come into contact with or be separated from a photoconductor while in linkage with rotation of the developing unit.

Abstract: A developing unit includes a toner storage portion for containing toner and a development portion for containing the toner supplied from the toner storage portion. The development portion includes a developing roller for supplying the toner to a photosensitive body, a supply roller and an auxiliary supply roller. The supply roller and the auxiliary supply roller rotate while facing each other to supply the toner to the developing roller. In the developing unit, an inequality that |D?(R1+R2)|?1.0 mm is satisfied, where a distance between the centers of the auxiliary supply roller and the supply roller in a region where the auxiliary supply roller and the supply roller face each other is D, a radius of the supply roller is R1, and a radius of the auxiliary supply roller is R2.

Abstract: A developing unit includes a toner storage portion containing toner and including a toner supply member, a development portion disposed above the toner storage portion and containing the toner supplied from the toner storage portion by the toner supply member, and including a developing roller and a supply roller to supply the toner to the developing roller, and a partition wall to divide the toner storage portion and the development portion, and including an opening portion disposed under the lowest portion of the supply roller and forming a path of the toner supplied from the toner storage portion to the development portion.

Abstract: A developing unit of an image forming apparatus includes a developer cartridge detachably mounted on the developing unit, a developing case in which a developing member and a first supply member are provided, a developer supply passage to supply a developer stored in the developer cartridge to the developing case, and a developer supplement unit mounted in a portion connecting the developing case and the developer supply passage, to agitate the developer supplied through the developer supply passage and to supply the agitated developer to the developing case.

Abstract: A developing unit of an image forming apparatus includes a developer cartridge detachably mounted on the developing unit, a developing case in which a developing member and a first supply member are provided, a developer supply passage to supply a developer stored in the developer cartridge to the developing case, and a developer supplement unit mounted in a portion connecting the developing case and the developer supply passage, to agitate the developer supplied through the developer supply passage and to supply the agitated developer to the developing case.

Abstract: A developing unit of an image forming apparatus includes a developer cartridge detachably mounted on the developing unit, a developing case in which a developing member and a first supply member are provided, a developer supply passage to supply a developer stored in the developer cartridge to the developing case, and a developer supplement unit mounted in a portion connecting the developing case and the developer supply passage, to agitate the developer supplied through the developer supply passage and to supply the agitated developer to the developing case.