Abstract: A powder delivery member includes: a rotation shaft portion disposed rotatably within a powder storage container with powder stored therein; a delivery portion for delivering the powder along the axial direction of the rotation shaft portion; and, a powder discharge portion which, is disposed at a position corresponding to the position of the powder discharge port of the powder storage container, and is capable of storing therein the powder delivered thereto from the delivery portion, and also which, when it is rotated along the peripheral direction of the rotation shaft portion with the powder stored therein, can deliver the stored powder to the powder discharge port.

Abstract: A toner case includes a main body that contains toner, a discharge port located in the main body through which toner is discharged, an agitating unit rotatably positioned in the main body for agitating the toner, a transportation unit rotatably positioned in the main body for transporting the toner toward the discharge port, and a driving unit that drives the transportation unit and the agitating unit. The driving unit is rotatable forward and backward. When the driving unit rotates in one rotation direction, the agitating unit and the transportation unit rotate. When the driving unit rotates in the other rotation direction, the transportation unit does not rotate and the agitating unit rotates in the same direction as a direction in which the agitating unit rotates when the driving unit rotates in the one rotation direction.

Abstract: A powder feed device includes a casing having an opening for receiving a powder from a powder housing portion housing the powder, at least an inner side of the casing having a cylindrical shape; a transport member that is arranged in the casing, extends in a powder transport direction, and rotates and transports the powder to the fed body; and a shutter member that is arranged at a closed position for closing the opening, receives a force from the transport member by its rotation, and moves to an open position for opening the opening. The transport member includes a transport portion that contributes to the powder transport, and a non-transport portion that does not contribute to the powder transport, and handles the movement of the shutter member to the open position. The shutter member moves to the open position when receiving an effect of the non-transport portion.

Abstract: A replaceable unit for an electrophotographic image forming device according to one example embodiment includes a housing having an inner volume forming a reservoir for storing toner. A rotatable shaft is positioned within the reservoir. A paddle is mounted to the shaft. The paddle includes a magnet that has a magnetic field detectable by a magnetic sensor for detecting the motion of the paddle.

Abstract: A developer supply container detachably mountable to a developer receiving apparatus and settable in a developer receiving apparatus by a setting operation including at least a rotation toward a setting position, includes a containing portion for containing the developer; a rotatable discharging member for discharging the developer out of said containing portion; drive transmitting means, engageable with a driving gear provided in said developer receiving apparatus and rotatable in a direction opposite the setting direction, for transmitting a rotating force from said driving gear to said discharging member.

Abstract: The developer container includes a rotator that is rotated in the container body, a sequence of gears disposed outside the developer container that transmits a torque to the rotator, and a container guiding portion that fits with a main body side guiding portion and guides the developer container in a direction in which the developer container is attached to a mounting portion of an image forming device main body. A first gear included in the sequence of the gears is movable between an operating position where the first gear engages with a second gear and a retracted position where the first gear is retracted. On a surface on which the container guiding portion is disposed, a part of the container guiding portion is disposed within a projected area of the first gear being disposed at the operating position.

Abstract: A developer storage container includes a container main body, a tubular portion projecting from the container main body, and a rotary member extending from the container main body to the tubular portion. The rotary member includes a first section located in the container main body and a second section located in the tubular portion. A first conveying member for conveying developer in a first conveying direction is arranged on the second section of a rotary shaft, and a second conveying member for conveying the developer in a second conveying direction is arranged radially outwardly of the first conveying member around the first section. A first flexible member radially extending to a side outward of the second conveying member and a second flexible member radially extending to a side outward of the second conveying member and having a shorter length than the first flexible member are mounted on the rotary shaft.

Abstract: A toner container including a first electrode disposed within the toner container, a second electrode electrically connected to the first electrode and disposed within the toner container, and a sense electrode disposed between the first electrode and the second electrode. The sense electrode and the first electrode form a first capacitor having a first capacitance that changes in response to a change in toner amount existing therebetween. The sense electrode and the second electrode form a second capacitor having a second capacitance that changes in response to a change in toner amount existing therebetween.

Abstract: A developer case that contains developer and supplies the developer to another device in a specified replenishing position includes a main body and a rotating unit. The main body includes a bottom wall, a top wall, and first and second side walls. The rotating unit includes a rotation shaft, a transportation member, and a drive input member. The first and second side walls respectively have first and second linear inner surfaces. When the developer case is in the replenishing position, when a line perpendicular to a horizontal line that passes through an axis of the rotation shaft is defined as a reference line, a first angle ?1 formed between the reference line and the first linear inner surface is less than a second angle ?2 formed between the reference line and the second linear inner surface.

Abstract: A paddle assembly for a shake-free toner cartridge comprises a toner paddle having a plurality of scrapers. When installed in a toner cartridge, a main scraper scrapes toner adhering to interior surfaces and directs toner from a first region of the toner reservoir into the opening in a first portion of the front of the housing. A secondary scraper positioned adjacent with the main scraper scrapes and directs toner from a second region of the toner reservoir into the first region. A side scraper scrapes toner adhering to interior surfaces of respective side walls of the housing.

Abstract: A developer container including: a housing including an inner surface that defines a filling port for filling developer; a cap mounted to the housing and sealing the filling port; and an agitating member having a rotary shaft and configured to be rotated about the rotary shaft to agitate the developer in the housing, wherein a first end portion of the rotary shaft is supported by the inner surface of the housing and the cap mounted to the housing.

Abstract: A toner discharging device has a toner containing section, a toner discharging member, and a toner discharging section. The toner discharging section has a toner discharge port formed by opening a vertically lower part of the cylindrical wall. The toner discharging member has a rotation axis; a toner discharge plate fixed to the rotation axis at a position facing the discharge port in the vicinity of one end of the discharging section and vertically above the discharge port; an elastic helical blade being fixed, to the discharge plate and being stretchable in a direction of the rotation axis; and a helical blade section having a helical blade fixed to the rotation axis over an area in the vicinity of another end of the discharging section and an area within the containing section where the discharge plate and the elastic helical blade are not formed.

Abstract: A toner transportation device includes a toner case and a drive section. The toner case includes a main body containing toner, and an agitating unit rotatably mounted in the main body that agitates the toner. The drive section includes a driving unit driving the agitating unit, a detection unit detecting a driving unit driving state, and a control unit able to transmit a drive instruction signal to the driving unit and receive a detection signal regarding the driving unit driving state from the detection unit. The control unit determines whether the toner case is in an overload state in accordance with a detection signal reception state. The control unit performs a retry control, causing the driving unit to repeatedly rotate the agitating unit forward and backward when the control unit determines that the toner case is in an overload state.

Abstract: A developing device includes a first developer containing chamber, a second developer containing chamber, a first inflow section, a second inflow section, a first conveyance member and a second conveyance member. The first inflow section allows the developer to flow from the second developer containing chamber into the first developer containing chamber. The second inflow section allows the developer to flow from the first developer containing chamber into the second developer containing chamber. The first conveyance member conveys the developer contained in the first developer containing chamber in a first developer conveyance direction. The second conveyance member conveys the developer contained in the second developer containing chamber in a second developer conveyance direction.

Abstract: A removable unit for an electrophotographic image forming device according to one example embodiment includes a housing having an inner volume forming a toner reservoir and a channel for accumulating toner. The removable unit further includes an auger for advancing toner within the channel. The auger has a rotational axis and a flight. An agitator is pivotally mounted within the toner reservoir. The agitator has at least one agitating member extending near the auger and a cam surface operatively connected to the at least one agitating member and positioned to engage the auger. When the auger rotates, the flight of the auger engages the cam surface causing pivotal movement of the agitator to move the at least one agitating member to agitate toner accumulated near the auger.

Abstract: A toner case includes a case body, a cover, and a conveying member. The cover covers the outer surface of a wall at an end of the case body. The conveying member, including a first attaching assembly, a second attaching assembly and a linking assembly, is rotatably attached to the case body and feeds toner. The first attaching assembly is rotatably attached to the wall. The second attaching assembly is rotatably attached to a wall at the other end of the case body. One end and the other end of the linking assembly are respectively linked to the first attaching assembly and second attaching assembly. One end is slidable in the longitudinal direction of the conveying member. The linking assembly rotates together with the first and second attaching assemblies. The first attaching assembly engages the cover's inner surface, preventing the first attaching assembly from coming off the one-end wall.

Abstract: A developer case has a main body, a cylindrical portion, and a rotating unit. The main body has a bottom wall. The cylindrical portion has a discharge port. The rotating unit is located so as to extend across the main body and the cylindrical portion, transports developer in the main body, and has a rotating shaft, a first transport member, a second transport member, and dispersing members. The rotating shaft has a first portion located in the main body and a second portion located in the cylindrical portion. The first transport member transports developer in a first transport direction from the cylindrical portion to the main body. The second transport member transports developer in a second transport direction from the main body to the cylindrical portion. The dispersing members move developer in the radial direction.

Abstract: In a new printer, a toner cartridge is mounted in the state where there is no toner in a reserve tank, and toner of the amount of filling toner D therein is supplied with the amount of full accommodation toner E for filling up the reserve tank by a toner supply mechanism. The toner of the amount of remaining surplus toner F remains in the toner cartridge. The amount of toner consumption G is measured by a dot counter during a printing execution. In the case where a toner density sensor detects a toner decreasing, the toner is supplied to a developing unit from the reserve tank. When it becomes G>F, it display-informs a user of “toner cartridge exchange is allowed”. Hereby, it enables to exchange the toner cartridge without stopping operation of the main body of the image forming apparatus using a two-component developer.

Abstract: A toner delivery system for a shake-free toner cartridge comprises a toner paddle assembly having a plurality of scrapers. A main scraper scrapes toner adhering to interior surfaces and directs toner from a first region of the toner reservoir into the opening in a first portion of the front of the housing. A secondary scraper positioned adjacent with the main scraper scrapes and directs toner from a second region of the toner reservoir into the first region. A side scraper scrapes toner adhering to interior surfaces of respective side walls of the housing.

Abstract: A developing device is refilled with an initial developer while the developing device and a photoreceptor are maintained within an image forming apparatus in the same state as in an image forming process. When refilling the developing device, a control unit of the image forming apparatus first drives a stirring feed member (screw) to feed the initial developer into the developing device, and then drives a developer carrier (developing roller) and a latent image carrier (photoreceptor) to supply the developer onto the developer carrier.

Abstract: The invention discloses a processing cartridge, which includes a powder tube, a sliding member and a mechanism for holding the sliding member, wherein the powder tube is used for receiving toner and the sliding member is capable of freely sliding in the powder tube. The mechanism for holding the sliding member is driven to close a powder outlet under the non-use state and a powder outlet portion is arranged on the powder tube. The powder outlet is arranged on the powder outlet portion and the sliding member closes the powder outlet under the action of the mechanism for holding the sliding member under the non-use state, and moves under the action of an external force to open the powder outlet under the use state. An internal member provided with an internal powder feeding opening is also arranged inside the powder outlet portion.

Abstract: An image forming apparatus includes a toner case and an attachment member. The toner case has a transmission coupling. The attachment member has a drive coupling, an advance/retreat member and a lever. The advance/retreat member advances and retreats between a first position and a second position being closer to the drive coupling than the first position. The lever is moved between a first operation position to move the advance/retreat member to the first position and a second operation position to move the advance/retreat member to the second position. When the toner case is attached to the attachment member, the toner case engages with the advance/retreat member. In this time, when the lever is moved from the first operation position to the second operation position, the toner case together with the advance/retreat member approaches to the drive coupling and the transmission coupling is connected to the drive coupling.

Abstract: A toner case includes a main body, a cover, a rotating member, an agitating member, a protrusion arrangement part and a depression arrangement part. The main body has a first wall, a second wall, a third wall, a fourth wall, a bottom board, an opening at an upper side and a toner discharge port discharging a toner stored inside to an outside. The protrusion arrangement part is formed on one of an upper face facing upward formed in the first or second wall and a lower face facing to the upper face formed in the cover. The protrusion arrangement part has a plurality of protrusions arranged in the direction from the third wall to the fourth wall. The depression arrangement part is formed on another of the upper and lower faces. The depression arrangement part has a plurality of depressions, into which the protrusions insert, arranged in the direction.

Abstract: An image forming apparatus includes a plurality of developing units respectively including developer inlets, the developing units are arranged side by side in a first direction, a plurality of developer containers to contain developers to be supplied to the plurality of developing units and respectively including developer outlets, the developer units are arranged side by side in the first direction to face the plurality of developing units, and a plurality of developer supplying paths respectively to connect the developer inlets to the developer outlets, wherein the plurality of developer containers include first and second developer containers, and a position of the developer outlet of the second developer container is different from position of the developer outlet of the first developer container.

Abstract: A developer storage body includes a storage portion for storing a developer, an agitation member for agitating the developer stored in the storage portion, and a swing member that swings in the storage portion by contact with the agitation member. A contact portion is provided at a first end portion of the swing member. The contact portion contacts the agitation member. A fixed portion and a swing portion are provided at a second end portion of the swing member. The fixed portion is fixed to the storage portion. The swing portion swings in the storage portion.

Abstract: A developer stirring member for stirring a developer in a developer accommodating portion includes a supporting shaft and a sheet-like member for stirring the developer. The sheet-like member has a first lateral end which is a free end and a second lateral end which is fixed on the supporting shaft. The sheet-like member is waved at the second lateral end, and waving is greater in the second lateral end than in the first lateral end. The sheet like member is fixed to the supporting shaft at intervals which are the same as pitches of the wave.

Abstract: The toner supply apparatus according to the present disclosure includes a shaft connection mechanism in which a first and a second joint are engaged to thereby enable transmission of rotation of a first shaft of a development device and a second shaft of a toner storage container. The first joint has a first engagement member biased from a first main body towards a second joint, and a biasing member for biasing the first engagement member. The second joint has a second main body and an engaging recessed portion engaging with the accommodated first engagement member in a configuration that is substantially incapable of rotation. When the first rotation axis is not aligned with the second rotation axis and the first engagement member is accommodated in the engaging recessed portion, the first engagement member inclines relative to the first or second rotation axis and can engage with the engaging recessed portion.

Abstract: A powder accommodation container includes an accommodation container body that accommodates powder, a transport member and a discharge port. The transport member is arranged in an inside of the accommodation container body, rotates about a rotating shaft, and transports powder in the inside of the accommodation container body. The discharge port is provided on the accommodation container body and discharges the powder accommodated in the accommodation container body to an outside of the accommodation container body. The transport member includes a first transport piece transporting the powder toward the discharge port at a position corresponding to the discharge port, and a second transport piece arranged on a downstream side in a rotating direction of the rotating shaft than the first transport piece. The second transport piece has a length that is in non-contact with the inner surface at an immediate downstream of the discharge port in the rotating direction.

Abstract: A developer tank of a developing device is partitioned into a first conveyance path, a second conveyance path, a first communicating path and a second communicating path with a partition. A first developer conveying member that conveys a developer in a first developer conveying direction is provided in the first conveyance path. A second developer conveying member that conveys the developer in a second developer conveying direction is provided in the second conveyance path. In the first developer conveying member, a double spiral blade is provided on a downstream side in the first developer conveying direction from a first conveying blade of the first developer conveying member, the double spiral blade including an inner spiral blade that conveys the developer in a first direction and an outer spiral blade that conveys the developer in a second direction.

Abstract: A developer storage container includes a developer storage portion that stores a developer and has an opening for supplying the developer. An agitating-and-supplying member is rotatably provided in the developer storage portion. The agitating-and-supplying member has a shaft portion and an agitating portion. The agitating portion has a fixed end and a distal end opposite to each other. The fixed end of the agitating portion is fixed to the shaft portion. The agitating portion has an area corresponding to the opening. In the area, a distance between a center axis of the shaft portion and the distal end of the agitating portion is longer than a distance between the center axis of the shaft portion and an outer wall of the developer storage portion.

Abstract: An image forming device includes a casing, a holder member, and a plurality of toner boxes. The holder member moves between an accommodated position in which it is accommodated in an accommodation space in the casing and a pull-out position in which at least part of the holder member is outside the accommodation space. Each toner box comprises a toner container formed with an opening and a shutter for opening and closing the opening. The operation member moves between a first position and a second position for closing and opening the shutter, respectively. When the holder member is on its way to the accommodated position from the pull-out position, a stop member prevents the holder member from moving while the operation member is at the first position and permits the holder member to move while the operation member is at the second position.

Abstract: A toner cartridge includes a toner containing section which contains a toner therein; a toner discharging unit which is disposed in one side of the toner containing section and has a toner discharging port; a screw member which is disposed inside the toner containing section and transports a toner inside the toner containing section to the toner discharging unit; a bearing member which holds an end of the screw member; a rotary shutter which is disposed in the toner discharging unit to be rotatable about a rotation axial line of the screw member and has a circular-arc-shaped cross-section; and a shutter opening and closing mechanism which opens the rotary shutter in conjunction with rotation of the screw member.

Abstract: A developer unit for an image forming apparatus is provided. The image forming apparatus includes a developer device having a developer agent carrier and a developer agent supplier, a developer agent container arranged in an upper position with respect to the developer device, and a curved wall, which separates the developer device from the developer agent container; is curved toward the developer agent container; and is formed to have a feeding opening and a collecting opening, and a conveyer, which is arranged along the developer agent supplier and conveys the developer agent toward the collecting opening. The curved wall is arranged to be in proximity to the conveyer and to fit with outlines of the conveyer.

Abstract: A powder accommodation container includes an accommodation container body, a regulation member, and a transport member. The accommodation container body has a hole portion to outside and accommodates powder. The regulation member is provided in the hole portion to regulate a passage of the powder accommodated in the accommodation container body. The transport member is arranged in an inside of the accommodation container body to rotate about a rotating shaft and to transport the powder in the inside of the accommodation container body. The transport member has one end side in a short direction that is arranged on the rotating shaft and the other end side that is a free end, the free end includes a flexible member that is in contact with the accommodation container body to be flexed. The flexible member is locatable to face the hole portion.

Abstract: A toner stirring member includes a stirring blade made of a flexible sheet having a first insertion hole, and a rotation shaft having a nipping section for nipping an edge the flexible sheet such that the flexible sheet can be inserted into and pulled out from the nipping section. An inclining projection on the rotation shaft is inserted into the first insertion hole. The flexible sheet is nipped by the nipping section, and the inclining projection is inserted into the first insertion hole, so that the stirring blade is fixed to the rotation shaft. The inclining projection has a first inclining surface that inclines in a direction in which the flexible sheet is pulled out from the nipping section.

Abstract: A toner cartridge includes a container for containing toner, a toner discharge section having a toner discharge port, an auger screw provided in the container, for conveying toner in the container to the toner discharge section, a shutter for opening and closing the toner discharge port, and a toner flowing-out preventing member provided in a communicating part between the container and the toner discharge section, for preventing flowing out of toner by closing an opening of the communicating part. The toner flowing-out preventing member is configured so as to open the opening in conjunction with an opening operation of the shutter.

Abstract: A toner discharge mechanism which is attached to a toner cartridge includes an auger screw for conveying and discharging a toner stored in the toner cartridge, the auger screw having an end portion downstream thereof, the end portion forming a taper portion having a predetermined length and an outer diameter diminishing toward a tip thereof; a cover member for covering the taper portion, the cover member having a conical inner wall configured to correspond to a taper shape of the taper portion; and a toner discharge outlet formed on the cover member.

Abstract: A toner cartridge comprises a toner cartridge body, a screw shaft, a paddle member, and a toner inflow block piece coupled to a part of the paddle member. The toner cartridge body comprises a toner storage section where the paddle member is disposed and a toner conveying passage The toner conveying passage, where the screw shaft is stored is adjacent to and communicates with the toner storage section. The toner inflow block piece is disposed at an end on a toner discharge port side of an agitating blade of the paddle member so as to project in a direction perpendicular to a rotary shaft of the screw shaft and has a cutout recess for the rotary shaft of the screw shaft to fit in.

Abstract: A toner cartridge includes a toner container that contains a toner, an auger screw, a toner discharge port, a shutter, an internal opening/closing valve and a stirring paddle. The internal opening/closing valve is provided as a member for closing the toner discharge port, in addition to the shutter. The shutter is fixed to a position at which the toner discharge port is always opened in a state where the toner cartridge is mounted in the image forming apparatus. The internal opening/closing valve is provided at a position facing the toner discharge port of a driving side end of a rotation shaft of the auger screw. The internal opening/closing valve is composed of a rectangular sheet member having flexibility, and closes the toner discharge port by blocking the entire toner discharge port.

Abstract: An image forming apparatus includes a toner case, a driving mechanism and an installed part. The toner case includes a container main body, a rotating member and a transmission coupling. The container main body is provided with a discharge port configured to discharge a toner. The rotating member is installed into the container main body. The transmission coupling is connected with the rotating member. The driving mechanism includes a drive coupling and a drive unit. The drive coupling is detachably connected with the transmission coupling. The toner case has a lever supported onto the container main body. The driving mechanism has a movement mechanism which works in accordance with the operation of the lever, in a state of installing the toner case into the installed part, to move the drive coupling from a disconnecting position to a connecting position with the transmission coupling.

Abstract: A toner delivery system for a shake-free toner cartridge comprises a toner paddle assembly having a plurality of scrapers. A main scraper scrapes toner adhering to interior surfaces and directs toner from a first region of the toner reservoir into the opening in a first portion of the front of the housing. A secondary scraper positioned adjacent with the main scraper scrapes and directs toner from a second region of the toner reservoir into the first region. A side scraper scrapes toner adhering to interior surfaces of respective side walls of the housing.

Abstract: A paddle assembly for a shake-free toner cartridge comprises a toner paddle having a plurality of scrapers. When installed in a toner cartridge, a main scraper scrapes toner adhering to interior surfaces and directs toner from a first region of the toner reservoir into the opening in a first portion of the front of the housing. A secondary scraper positioned adjacent with the main scraper scrapes and directs toner from a second region of the toner reservoir into the first region. A side scraper scrapes toner adhering to interior surfaces of respective side walls of the housing.

Abstract: A toner container including a first electrode disposed within the toner container, a second electrode electrically connected to the first electrode and disposed within the toner container, and a sense electrode disposed between the first electrode and the second electrode. The sense electrode and the first electrode form a first capacitor having a first capacitance that changes in response to a change in toner amount existing therebetween.

Abstract: A toner paddle for a toner vessel containing toner according to one example embodiment includes a drive shaft defining an axis of rotation for the paddle. The paddle also includes a first set of radially aligned breaker bars, a second set of radially aligned breaker bars radially offset from the first set of breaker bars by about 90 degrees, and a third set of radially aligned breaker bars radially offset from the second set of breaker bars by about 180 degrees. Each of the sets of breaker bars includes a plurality of radially extending breaker bars axially spaced along the drive shaft. The rotation of the drive shaft results in the rotation of the sets of breaker bars into, through, and out of engagement with the toner within the vessel.

Abstract: A transport member for a powder transport includes a revolving shaft, a transport part that extends in a helical shape relative to an axial direction of the revolving shaft, includes one end part with a free end and the other end part at an opposite side of the one end part, and transports a powder at the time of revolution of the revolving shaft, and one support part that supports the other end part of the transport part by being arranged with the revolving shaft, wherein the transport part is not supported by another support part that is arranged at an phase angle between the one support part and the another support part of 90 degrees or more, in a direction of the revolving shaft.

Abstract: A toner cartridge has first and second toner housing portions configured to house toner. The first toner housing portion has a first bottom part that is arcuately curved. The second toner housing portion has a second bottom part that is arcuately curved. The second bottom part is next to the first bottom part and is situated at a position lower than the first bottom part. A third bottom part is provided between the first bottom part and the second bottom part. The third bottom part has a toner discharge port.

Abstract: A developer supply container is mountable to a developer receiving apparatus including a driving gear, wherein the container mounted to the apparatus is settable to a set position by a rotating operation of the container in a setting direction by an operator, and includes a substantially cylindrical portion; a developer discharging opening provided on a surface of the cylindrical portion; a developer feeding member provided in the cylindrical portion; a drive receiving member to engage with the driving gear for rotating the developer feeding member; and a regulating portion for regulating a mounting attitude of the cylindrical portion so as to prevent engagement between the drive receiving member and the driving gear. A rotating operation of the cylindrical portion toward a set position about a center of the cylindrical portion in a setting direction engages the drive receiving member with the driving gear.

Abstract: A developer unit for an image forming apparatus is provided. The developer unit includes a developer device with a developer agent carrier, a developer agent container arranged in an upper position with respect to the developer device. The developer agent container is formed to have a fitting wall, which is curved inward at a position to be adjacent to the developer device. The developer agent container includes an agitator, which is rotated to sweep an inner surface of the fitting wall and stir developer agent in the developer agent container. The fitting wall is formed to have a first feeding hole and a first collecting hole. A first angle between a direction, in which the first collecting hole is oriented, and a vertical direction is larger than a second angle between a direction, in which the first feeding hole is oriented, and the vertical direction.

Abstract: A cartridge detachably attachable to an image forming apparatus includes a developer storage chamber partitioned into a first storage portion and a second storage portion and configured to store a developer, a replenishment opening disposed in the second storage portion, through which the developer passes from inside the developer storage chamber to outside the developer storage chamber, and a conveyance member disposed in the second storage portion and configured to convey the developer in a predetermined conveying direction, the conveyance member including a first conveyance portion located on an upstream side of the replenishment opening to convey the developer in the conveying direction, and a second conveyance portion located on a downstream side of the replenishment opening to convey an amount of a developer smaller than that of the developer conveyed by the first conveyance portion in the conveying direction.

Abstract: A developer supply container is mountable to a developer receiving apparatus including a driving gear, and includes a developer discharging opening; a feeding blade for feeding the developer toward the opening when the container is positioned at a developer discharging position; a drive receiving gear engageable with the driving gear for rotating the feeding blade; a regulating projection for regulating a mounting attitude of the container to prevent engagement between the drive receiving and driving gears. Upon mounting the container, the drive receiving gear is revolvable, with manual rotation of the container, about a rotation center of the container to a set position where the drive receiving gear engages with the driving gear; and a load applier for applying a load to the drive receiving gear to rotate the container from the set position to the discharging position by the rotational force received by the drive receiving gear.