A toner cartridge includes a cylinder having an opening and accommodating carbon powder, a transmission member having a pipe portion sleeved onto the cylinder, an end portion and at least one outlet communicating with the opening, a powder guiding member having a main body disposed at the end portion and blades extended from the main body radially, and a powder storing cover having a cover body sleeved onto the pipe portion and a powder exit located under the powder guiding member. As a result, the carbon powder can leave the cylinder through the opening, enter the powder storing cover through the outlet, and be driven by the rotation of each blade of the powder guiding member to move to the powder exit, thereby discharged for usage in an electronic imaging device. The toner cartridge is simple in structure, convenient and fast in assembly, and less possibly has false actions.

A toner case includes a case main body and a cleaning member. The case main body is capable of containing a toner supplied to an image forming part arranged inside an apparatus main body and is attachable to and detachable from a supplying attachment part of the apparatus main body along an attachment and detachment direction. The cleaning member is arranged at an outer circumferential face of the case main body. The case main body rotates inside the supplying attachment part in a first direction so as to convey the toner toward a communicating port formed at a first side in the attachment and detachment direction. The cleaning member rotates integrally with the case main body in the first direction so as to clean an inner circumferential face of the supplying attachment part.

A toner case includes a case main body, a housing frame, a communicating port, a conveying rib, and a conveying screw. The case main body is capable of containing a waste toner. The housing frame is configured to communicate with an inside of the case main body and to rotatably support the case main body. The communicating port is opened on a circumferential face of the housing frame and connected with an image forming part. The conveying rib rotates integrally with the case main body in a first direction so as to convey the waste toner along a direction of introducing the waste toner into the case main body. The conveying screw rotates integrally with the case main body in the first direction so as to convey the waste toner introduced into the housing frame via the communicating port toward the inside of the case main body.

A developer supply container detachably mountable to a developer supplying apparatus includes a pump portion provided to act at least on said developer discharging chamber and having a volume changeable with expansion and contraction with reciprocation, the cam groove for converting the rotational force received by a gear into a force for decreasing the volume of pump portion, a cam groove for converting the received force into a force for increasing the volume of the pump portion, a cam groove not converting the received force for operating the pump portion, and a phase detecting portion for stopping the rotation of a feeding portion using one of said cam grooves.

A toner cartridge includes a cylindrical casing configured so as to be rotatable, a discharge port discharging toner inside the casing to a storage section of a developing unit, and a plurality of slanted ribs on an inner circumferential surface of the casing with one or more discontinuous sections formed in between. The plurality of slanted ribs each include a first slanted rib located on a downstream side of the discontinuous section and a second slanted rib located on an upstream side of the discontinuous section with respect to a toner flow direction. A first end portion formed on the discontinuous section of the first slanted rib is disposed at a position relatively shifted by a predetermined length toward a toner inputting side in relation to a position on an extension line of a second end portion formed on the discontinuous section of the second slanted rib.

A powder container contains powder and is attached to an image forming apparatus including: a conveying nozzle to convey the powder; a powder receiving hole of the conveying nozzle to receive the powder from the powder container; an apparatus main-body gear to transmit a driving force to the powder container; and a container receiving section including the conveying nozzle and receiving the powder container. The powder container includes: an opening at one end of the powder container in a longitudinal direction; a nozzle receiver at the opening to receive the conveying nozzle; a conveyor to convey the powder; and a container gear to drive the conveyor by meshing with the apparatus main-body gear. The container gear is to mesh with the apparatus main-body gear at a position closer to the opening than the powder receiving hole in the longitudinal direction. The opening is to mate with the container receiving section.

A developer supply container is detachably mountable to a developer supplying apparatus and includes a pump portion provided to act at least on a developer discharging chamber. The pump portion has a volume changeable with expansion and contraction with reciprocation. A cam groove is provided for converting a rotational force received by a gear into a force for decreasing the volume of pump portion, a cam groove is provided for converting the received force into a force for increasing the volume of the pump portion, and a cam groove is provided for not converting the received force for operation of the pump portion. The supplying apparatus includes a phase detecting portion for stopping the rotation of a feeding portion of the developer supply container using one of the cam grooves.

A nozzle insertion member arranged in a powder container includes a nozzle insertion opening; an opening/closing member opening/closing the nozzle insertion opening; a supporting member supporting the opening/closing member; and a biasing member provided to the supporting member to bias the opening/closing member toward a closing position. When the powder is supplied to the conveying nozzle along with rotation of a rotary conveyor arranged inside the powder container, the supporting member rotates with the rotation of the conveyor. The opening/closing member is rotated by a drive transmitting mechanism with rotation of the supporting member. The mechanism includes an elongated member arranged on the opening/closing member and penetrating through an opening formed on the supporting member; and a drive transmitted portion formed on the elongated member; and a drive transmitting portion formed on an inner surface of the opening and configured to come into contact with the drive transmitted portion.

A developer supply container and a developer supplying system include a feeding portion 2c for feeding a developer T in a developer accommodating portion 2 toward a developer discharging portion 4c in accordance with rotation, a gear portion 2d for receiving a rotational force for rotating a feeding portion 2c, a pump portion 3a provided to act at least toward the developer discharging portion 4c and having a volume with changes with reciprocation, a drive converting portion for converting the rotational force inputted to the gear portion 2d into a force for operating the pump portion 3a, a reciprocating member 3b provided at the drive converting portion and reciprocable to convert to the rotational force into a force for operating the pump portion 3a, a rotation regulating portion 3f for regulating movement in a direction crossing with a direction in which the reciprocating member 3b reciprocates, an elastically deformable urging portion 3g1, 3g2, provided on the reciprocating member 3b, for urging the reciprocating member 3b toward the rotation regulating portion 3f.

A development unit includes a development housing configured to store toner and a development roller rotatable about a development axis extending in a first direction. The development roller supplies the toner in the development housing to a photosensitive drum. The development housing includes a reception port and a slope. The reception port receives toner from a toner container configured to store the toner to be supplied to the development housing. The reception port is located away from the development roller in a second direction crossing the first direction. The slope is located below the reception port in the development housing. The slope includes a first slope portion and a second slope portion. The first slope portion is inclined downward away from the reception port in the first direction. The second slope portion is inclined downward toward the development roller in the second direction.