[TASK] An object of the present invention is to provide an image developing apparatus and a process cartridge with which an image quality can be improved while reducing a number of parts and reducing an amount of remaining developer. [SOLUTION] A process cartridge detachably mountable to an electrophotographic image forming operators includes a developing chamber including a developing roller and a developer supplying roller; a developer accommodating container accommodating the developer provided below the developing chamber with respect to gravity direction, wherein the developer is fed into the developing chamber while being stirred by a feeding member. The developer supplying roller rotates such that a surface thereof moves in the same direction as a surface of the developing roller at a position where the developer supplying roller contacts the developing roller. A surface speed of the developer supplying roller is higher than a surface speed of the developing roller. The developer supplying roller is rotationally driven by receiving a driving force at a position upstream of the developing roller.

An image forming apparatus forms an image on a recording material and includes an apparatus body, a first process cartridge including a first photosensitive member and a first developing roller to supply first toner to the first photosensitive member, with the first process cartridge being detachably attached to the apparatus body, and a toner cartridge to accommodate the first toner and detachably attached to the apparatus body independently from the first process cartridge. A second process cartridge includes a second photosensitive member and a second developing roller to supply second toner to the second photosensitive member, with the second process cartridge being detachably attached to the apparatus body and configured not to be replenished with the second toner in a state where the second process cartridge is attached to the apparatus body.

An image-forming apparatus includes: a main body; a toner cartridge having a first opening; a process cartridge having a photosensitive drum and a second opening; a positioning part; a transfer unit; and an urging member. The toner cartridge and process cartridge are attachable to and detachable from the main body in an axial direction of the photosensitive drum. The positioning part and transfer unit are positioned above the process cartridge attached to the main body. The positioning part fixes the attached process cartridge in position relative to the main body. The urging member urges the attached process cartridge toward the positioning part and urges the process cartridge such that the toner can be supplied from the toner cartridge to the process cartridge through the first opening and the second opening when the toner cartridge and the process cartridge are attached to the main body.

An image forming apparatus includes a first pressing member configured to press a unit that has a second rotating member that can come into contact with a first rotating member, and a supporting member rotatably supporting the second rotating member. The first pressing member moves the supporting member so that the second rotating member moves from the contact position to the separated position. Also provided is a second pressing member that presses the supporting member. The second pressing member is capable of moving between a mounting/detaching restriction position where mounting/detaching of the cartridge to/from the apparatus main body is restricted, and a mounting/detaching allowing position where mounting/detaching of the cartridge to/from the apparatus main body is allowed. The second pressing member moves the unit to a position distanced from the first rotating member by moving from the mounting/detaching restriction position to the mounting/detaching allowing position while pressing the supporting member.

A cartridge including a photosensitive drum, a cleaning unit that supports the photosensitive drum, a process member that acts on the photosensitive drum, the cartridge being detachable from a main body of the image forming apparatus in a rotational axial direction of the photosensitive drum. The cartridge further including a first position determination position determining a downstream position with respect to the main body in a mounting direction of the photosensitive drum, and a second position determination portion that determines an upstream position with respect to the main body in the mounting direction. Furthermore, in a cross section orthogonal to the mounting direction, a distance from an axis of rotation of the photosensitive drum to the second position determination portion in a predetermined direction is larger than a distance from the axis of rotation to the first position determination portion in the predetermined direction.

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 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 casing; a process unit for forming a developer image on a sheet; an image exposing unit; a sheet cassette detachably mounted to the casing; a feeding roller for single the sheet from the cassette; a feeding guide provided in the casing and configured to guide the sheet moving from the cassette to the process unit. The exposing unit is disposed right above the feeding roller. The process unit is at a position the same position as the exposing unit in the vertical direction and downstream of the exposing unit in a horizontal direction. The cassette is below the feeding roller. The guide is between the exposing unit and the cassette in the vertical direction. The guide includes upper and lower guides. When the cassette is drawn out of the casing, the lower guide moves to an accommodating portion in the cassette.

A developing cartridge, to be used in an image forming apparatus in which the developing cartridge including a developer carrier and a drum cartridge including a photosensitive drum are attachable and detachable, includes a cartridge body including the developer carrier, first and second supporting members that support the cartridge body to be capable of turning, and a restricting member that restricts the turn of the cartridge body with respect to the first supporting member in the developing cartridge in which the first and second supporting members have been positioned in the body of the image forming apparatus and urging has been made possible in one direction in a turning direction of the cartridge body so that the developing roller is made capable of coming into contact with the photosensitive drum, when the developing cartridge has been attached to the image forming apparatus.

A second unit includes a restricted portion that comes into contact with a restricting portion provided to a body of an apparatus, the restricted portion coming into contact with the restricting portion, in order to restrict the movement of a developer carrier in a direction to make contact with an image carrier, when a developing cartridge has not reached a predetermined attachment position, and not coming into contact with the restricting portion when the developing cartridge is in the predetermined attachment position.