Abstract: An image forming apparatus to which a toner container is detachably mountable includes a mounting portion to which the toner container is detachably mountable and which includes a receiving port for receiving toner supplied from the toner container, a passage for permitting passing of the toner received through the receiving port and provided with a through hole, and a filter portion provided so as to cover the through hole and for permitting passing of air; and an accommodating portion configured to accommodate the toner received through the receiving port. At least a part of the through hole overlaps with the receiving port as viewed in a horizontal direction perpendicular to a direction of gravitation.

Abstract: A cartridge is configured to be attachable to a main body of an image forming apparatus and configured to receive toner supplied from a supply container. The cartridge includes a supply port configured to receive the toner supplied from the supply container, a shutter member configured to cover the supply port, and a locking member. The locking member is moved from a lock position to an unlock position to allow movement of the shutter member by using electric power supplied from the main body.

Abstract: An image forming apparatus includes a developer container to and from which a replenishment container is attachable and detachable and which includes an accommodating portion that accommodates developer and a replenishment port, an agitation member, an opening/closing member configured to be movable between a closed position and an open position, a drive source for driving the agitation member, and a control portion configured to control the drive source. The apparatus is configured such that image formation is not possible when the opening/closing member is at the open position, and the agitation member is capable of driving in a case where the opening/closing member is at the open position.

Abstract: A cartridge is configured to be attachable to a main body of an image forming apparatus and configured to receive toner supplied from a supply container. The cartridge includes a supply port configured to receive the toner supplied from the supply container, a shutter member configured to cover the supply port, and a locking member. The locking member is moved from a lock position to an unlock position to allow movement of the shutter member by using electric power supplied from the main body.

Abstract: A toner container for use with an image forming apparatus is provided with a toner accommodating portion in which toner is accommodated; a base portion including a receiving opening for receiving the toner accommodated in the toner accommodating portion, a discharge opening for permitting discharge of the toner, received through the receiving opening, to an outside of the toner container, and a passage which is a passage extending from the receiving opening to the discharge opening and which is for permitting passing of the toner; and a shutter constituted so as to be rotatable about a rotational axis relative to the base between an open position where the discharge opening is exposed to the outside and a closed position where the shutter covers the discharge opening, wherein the passage extends in a direction in which the passage is inclined relative to the rotational axis so that the receiving opening is in a position where the receiving opening crosses the rotational axis and so that the discharge opening

Abstract: An image forming apparatus includes a developer container to and from which a replenishment container is attachable and detachable and which includes an accommodating portion that accommodates developer and a replenishment port, an agitation member, an opening/closing member configured to be movable between a closed position and an open position, a drive source for driving the agitation member, and a control portion configured to control the drive source. The apparatus is configured such that image formation is not possible when the opening/closing member is at the open position, and the agitation member is capable of driving in a case where the opening/closing member is at the open position.

Abstract: A toner container includes a storage portion configured to store toner and a communicating member including a receiving port, a discharge port, and a passage. The passage includes a first inclined surface and a second inclined surface connecting the first inclined surface and the discharge port to each other. When viewed in a third direction perpendicularly intersecting with both of a first direction and a second direction, the first inclined surface is inclined with respect to the second direction such that a more downstream portion of the first inclined surface in the first direction is closer to the discharge port in the second direction, and the second inclined surface is inclined with respect to the second direction such that a more downstream portion of the second inclined surface in the first direction is closer to the discharge port in the second direction.

Abstract: A toner container for use with an image forming apparatus is provided with a toner accommodating portion in which toner is accommodated; a base portion including a receiving opening for receiving the toner accommodated in the toner accommodating portion, a discharge opening for permitting discharge of the toner, received through the receiving opening, to an outside of the toner container, and a passage which is a passage extending from the receiving opening to the discharge opening and which is for permitting passing of the toner; and a shutter constituted so as to be rotatable about a rotational axis relative to the base between an open position where the discharge opening is exposed to the outside and a closed position where the shutter covers the discharge opening, wherein the passage extends in a direction in which the passage is inclined relative to the rotational axis so that the receiving opening is in a position where the receiving opening crosses the rotational axis and so that the discharge opening

Abstract: An accommodating container includes a flexible pouch including a bottom portion and a side portion extending from the bottom portion so as to form an opening and a communicating member disposed inside the side portion on a side of the opening and provided with a communicating portion communicating between inside and outside of the pouch. The communicating member includes an opposite surface opposing the bottom portion, and the side portion includes a fold forming portion forming a folding shape along an edge portion of the opposite surface of the communicating member.

Abstract: An image forming apparatus includes a developer container to and from which a replenishment container is attachable and detachable, the developer container including an accommodating portion, and a supporting portion, wherein the developer container includes a projection portion that is provided at one end portion thereof in the rotation axis direction of the developer bearing member and projects toward the supporting portion more than a center portion of the developer container in a crossing direction crossing the rotation axis direction, the projection portion communicates with the accommodating portion and includes, at a distal end portion thereof, an attachment portion configured such that the replenishment container is attachable thereto in a state of being exposed to the outside of the apparatus, and a replenishment port for replenishing the accommodating portion with developer from the replenishment container is defined in the attachment portion.

Abstract: A toner container includes a toner storage unit, a container base portion including a discharge port provided on an outer surface of the container base portion, the outer surface extending in a first direction, the discharge port communicating with the toner storage unit, and a container shutter configured to be rotatable about a rotation axis extending in a direction along the first direction between a shielding position and an open position. The container base portion includes an engaging portion configured to be engaged with an engaged portion of the image forming apparatus so that rotation of the container base portion with respect to the image forming apparatus about the rotation axis is restricted. At least a part of the engaging portion of the container base portion is exposed from the container shutter in a case where the container shutter is in the shielding position.

Abstract: An image forming apparatus includes a developer container to and from which a replenishment container is attachable and detachable, the developer container including an accommodating portion, and a supporting portion, wherein the developer container includes a projection portion that is provided at one end portion thereof in the rotation axis direction of the developer bearing member and projects toward the supporting portion more than a center portion of the developer container in a crossing direction crossing the rotation axis direction, the projection portion communicates with the accommodating portion and includes, at a distal end portion thereof, an attachment portion configured such that the replenishment container is attachable thereto in a state of being exposed to the outside of the apparatus, and a replenishment port for replenishing the accommodating portion with developer from the replenishment container is defined in the attachment portion.

Abstract: An image forming apparatus includes a developer container to and from which a replenishment container is attachable and detachable and which includes an accommodating portion that accommodates developer and a replenishment port, an agitation member, an opening/closing member configured to be movable between a closed position and an open position, a drive source for driving the agitation member, and a control portion configured to control the drive source. The apparatus is configured such that image formation is not possible when the opening/closing member is at the open position, and the agitation member is capable of driving in a case where the opening/closing member is at the open position.

Abstract: An image forming apparatus to which a toner container is detachably mountable includes a mounting portion to which the toner container is detachably mountable and which includes a receiving port for receiving toner supplied from the toner container, a passage for permitting passing of the toner received through the receiving port and provided with a through hole, and a filter portion provided so as to cover the through hole and for permitting passing of air; and an accommodating portion configured to accommodate the toner received through the receiving port. At least a part of the through hole overlaps with the receiving port as viewed in a horizontal direction perpendicular to a direction of gravitation.

Abstract: A conveyance mechanism which includes a rotation shaft extending in a direction along a first direction connecting first and second discharge ports that is rotatable with a rotation axis extending in the first direction. Wherein, a first rotation conveyance unit is disposed on the rotation shaft, and is rotatable together with the rotation shaft, conveys developer toward the first discharge port, and a second rotation conveyance unit is disposed on the rotation shaft, and is rotatable together with the rotation shaft, conveys developer toward the second discharge port. The second rotation conveyance unit is configured to provide a larger amount of conveyance than the first rotation conveyance unit.

Abstract: A cartridge is configured to be attachable to a main body of an image forming apparatus and configured to receive toner supplied from a supply container. The cartridge includes a supply port configured to receive the toner supplied from the supply container, a shutter member configured to cover the supply port, and a locking member. The locking member is moved from a lock position to an unlock position to allow movement of the shutter member by using electric power supplied from the main body.

Abstract: An image forming apparatus includes a developer container to and from which the replenishment container is attachable and detachable and which includes an accommodating portion that accommodates developer and a replenishment port, an agitation member, an opening/closing member configured to be movable between a closed position and an open position, a drive source for driving the agitation member, and a control portion configured to control the drive source. The apparatus is configured such that image formation is not possible when the opening/closing member is at the open position, and the agitation member is capable of driving in a case where the opening/closing member is at the open position.

Abstract: A cartridge is configured to be attachable to a main body of an image forming apparatus and configured to receive toner supplied from a supply container. The cartridge includes a supply port configured to receive the toner supplied from the supply container, a shutter member configured to cover the supply port, and a locking member. The locking member is moved from a lock position to an unlock position to allow movement of the shutter member by using electric power supplied from the main body.

Abstract: A toner container for use with an image forming apparatus is provided with a toner accommodating portion in which toner is accommodated; a base portion including a receiving opening for receiving the toner accommodated in the toner accommodating portion, a discharge opening for permitting discharge of the toner, received through the receiving opening, to an outside of the toner container, and a passage which is a passage extending from the receiving opening to the discharge opening and which is for permitting passing of the toner; and a shutter constituted so as to be rotatable about a rotational axis relative to the base between an open position where the discharge opening is exposed to the outside and a closed position where the shutter covers the discharge opening, wherein the passage extends in a direction in which the passage is inclined relative to the rotational axis so that the receiving opening is in a position where the receiving opening crosses the rotational axis and so that the discharge opening

Abstract: A conveyance mechanism which includes a rotation shaft extending in a direction along a first direction connecting first and second discharge ports that is rotatable with a rotation axis extending in the first direction. Wherein, a first rotation conveyance unit is disposed on the rotation shaft, and is rotatable together with the rotation shaft, conveys developer toward the first discharge port, and a second rotation conveyance unit is disposed on the rotation shaft, and is rotatable together with the rotation shaft, conveys developer toward the second discharge port. The second rotation conveyance unit is configured to provide a larger amount of conveyance than the first rotation conveyance unit.