Abstract: A developing device includes a developer carrier that opposes an image carrier and rotates while carrying developer on a surface thereof; and a container that supports the developer carrier in a rotatable manner and contains the developer, the developer containing toner, first carrier subjected to frictional charging together with the toner, and second carrier having a diameter greater than a diameter of the first carrier and an electrical resistance lower than an electrical resistance of the first carrier.

Abstract: A developing device includes a developer carrier that opposes an image carrier and rotates while carrying developer on a surface thereof; and a container that supports the developer carrier in a rotatable manner and contains the developer, the developer containing toner, first carrier subjected to frictional charging together with the toner, and second carrier having a diameter greater than a diameter of the first carrier and an electrical resistance lower than an electrical resistance of the first carrier.

Abstract: A developer transport device includes a transport path through which a developer is transported from a developer container to a developing device; an inlet portion that is disposed at an upstream end of the transport path in a developer transport direction and into which the developer falls freely from an outlet opening of the developer container; a transport member that is disposed in the transport path and that transports the developer by rotating; and a rotation control unit that causes, if the transport member has not been driven for a predetermined period, the transport member to rotate in a backward direction that is opposite to a forward direction in which the transport member rotates when supplying the developer to the developing device.

Abstract: Provided is a powder containing device including a powder container that contains powder, that has a first end which is closed, that has a second end which is opened, that includes a main body section and a tapered section which is disposed on the second end side from the main body section and has a diameter reduced as close to the second end side, and that has an inner circumferential surface on which a protruding ridge is formed to convey the powder to the second end side by rotating around a rotation axis extending in a direction in which the first end and the second end is connected, and a lid member that is provided with an outlet of the powder, is maintained in a non-rotating state, and causes the powder flowing from the opening to flow out from the outlet.

Abstract: A container for developer detachably mountable to an image forming apparatus body includes a container body, a discharge member, a resistive member, and a resistance reduction mechanism. The container body contains developer and is rotated when drive is transmitted from the image forming apparatus body. The discharge member supports the container body rotatable relative to the discharge member and has a discharge port through which the developer is discharged. The resistive member is brought into contact with the container body so as to apply resistance to the rotation of the container body. The resistance reduction mechanism changes a contact state between the resistive member and the container body so as to reduce the resistance between the resistive member and the container body when the container is mounted to the image forming apparatus body.

Abstract: An image forming apparatus includes an accommodation container, a storage medium, and a controller. The accommodation container includes a rotational portion and outflow portion. The rotational portion accommodates a developer therein and has a helical-shaped transport section formed in an inner surface thereof. The outflow portion rotatably supports the rotational portion and has an outflow port through which the developer transported during rotation of the rotational portion flows out. The storage medium stores use state information of the developer accommodated in the rotational portion. The controller controls a driving source which drives the rotational portion. When a use state of the accommodation container for the developer is a use state which is set in advance, the controller intermittently drives the rotational portion by performing driving at a rotation angle of (n+½)?±18 degrees or less than 90 degrees and stopping.

Abstract: Provided is a developer-containing vessel including a fixing section that includes a discharge portion through which developer is discharged, a rotation section that includes a container in which the developer is contained and a dispersion member which is supported to be integrally rotatable along with the container and disperses the developer during rotation, and that is supported to be rotatable with respect to the fixing section, and a transport portion that is formed in the container, is inclined with respect to a rotational axis direction of the rotation section, and transports the developer during the rotation of the rotation section.

Abstract: An image forming apparatus includes an accommodation container, a storage medium, and a controller. The accommodation container includes a rotational portion and outflow portion. The rotational portion accommodates a developer therein and has a helical-shaped transport section formed in an inner surface thereof. The outflow portion rotatably supports the rotational portion and has an outflow port through which the developer transported during rotation of the rotational portion flows out. The storage medium stores use state information of the developer accommodated in the rotational portion. The controller controls a driving source which drives the rotational portion. When a use state of the accommodation container for the developer is a use state which is set in advance, the controller intermittently drives the rotational portion by performing driving at a rotation angle of (n+1/2)?±18 degrees or less than 90 degrees and stopping.

Abstract: A detachable body includes an opening portion, an opening and closing member, a sealing member, a sealing member, and a protrusion portion. The opening and closing member is movable between an open position and a closed position. The opening and closing member includes a facing portion that faces the opening portion with a gap when the opening and closing member is located at the closed position. When the opening and closing member is moved to the open position, the sealing member has a thickness that is thicker than a gap between the opening portion and the facing portion. When the opening and closing member is moved to the closed position, the sealing member elastically deforms to seal the opening portion. The protrusion portion protrudes from one of a frame portion around the opening portion and the facing portion toward the other.

Abstract: A detachable body includes an opening portion, an opening and closing member, a sealing member, a sealing member, and a protrusion portion. The opening and closing member is movable between an open position and a closed position. The opening and closing member includes a facing portion that faces the opening portion with a gap when the opening and closing member is located at the closed position. When the opening and closing member is moved to the open position, the sealing member has a thickness that is thicker than a gap between the opening portion and the facing portion. When the opening and closing member is moved to the closed position, the sealing member elastically deforms to seal the opening portion. The protrusion portion protrudes from one of a frame portion around the opening portion and the facing portion toward the other.

Abstract: Provided is a powder containing device including a powder container that contains powder, that has a first end which is closed, that has a second end which is opened, that includes a main body section and a tapered section which is disposed on the second end side from the main body section and has a diameter reduced as close to the second end side, and that has an inner circumferential surface on which a protruding ridge is formed to convey the powder to the second end side by rotating around a rotation axis extending in a direction in which the first end and the second end is connected, and a lid member that is provided with an outlet of the powder, is maintained in a non-rotating state, and causes the powder flowing from the opening to flow out from the outlet.

Abstract: A powder storage device includes a powder container that has an opening at one end, stores powder therein, and has, on an inner peripheral surface, a rib configured to transport the powder toward the opening with rotation of the powder container, a lid member that is configured to cover the opening, has an outflow opening through which the powder flows, and is held in a non-rotatable state, and a driving-force transmission member interposed between the powder container and the lid member and having a driving-force receiving portion penetrating the lid member in a rotation axis direction, the driving-force transmission member transmitting a rotating force to the powder container.

Abstract: A container for developer detachably mountable to an image forming apparatus body includes a container body, a discharge member, a resistive member, and a resistance reduction mechanism. The container body contains developer and is rotated when drive is transmitted from the image forming apparatus body. The discharge member supports the container body rotatable relative to the discharge member and has a discharge port through which the developer is discharged. The resistive member is brought into contact with the container body so as to apply resistance to the rotation of the container body. The resistance reduction mechanism changes a contact state between the resistive member and the container body so as to reduce the resistance between the resistive member and the container body when the container is mounted to the image forming apparatus body.

Abstract: A container for developer detachably mountable to an image forming apparatus body includes a rotating body that contains developer and is rotated about a rotational center when drive is transmitted from the apparatus body, a discharge member that supports the rotating body such that the rotating body is rotatable relative to the discharge member and has a discharge port through which the developer is discharged, an anti-leakage member that is disposed in one of the rotating body and the discharge member and suppresses leakage of the developer, and a compressing portion that has a first side and a second side farther from the rotational center than the first side, is disposed in the other of both, and is pressed against the anti-leakage member to compress the anti-leakage member such that a compressing amount is larger on the second side than on the first side.

Abstract: A container for developer detachably mountable to an image forming apparatus body includes a rotating body that contains developer and is rotated about a rotational center when drive is transmitted from the apparatus body, a discharge member that supports the rotating body such that the rotating body is rotatable relative to the discharge member and has a discharge port through which the developer is discharged, an anti-leakage member that is disposed in one of the rotating body and the discharge member and suppresses leakage of the developer, and a compressing portion that has a first side and a second side farther from the rotational center than the first side, is disposed in the other of both, and is pressed against the anti-leakage member to compress the anti-leakage member such that a compressing amount is larger on the second side than on the first side.

Abstract: An image forming apparatus includes: a developer container having a containing portion which contains developer and is rotated when a driving force is transmitted to the containing portion from an image forming apparatus body, a discharge portion that rotatably supports the containing portion and has a discharge port through which the developer is discharged, and a restricting member provided at the discharge portion and movable between a restricting position where the restricting member restricts rotation of the containing portion and a releasing position where the restricting member releases the restriction of rotation of the containing portion, the developer container being removably attached to the image forming apparatus body; and a releasing member that is supported on the image forming apparatus body and moves the restricting member to the releasing position when the developer container is attached to the image forming apparatus body.

Abstract: A powder container device includes a powder container that contains powder and has an opening at one end, the powder container being installed in a substantially horizontal orientation and having a projection on an inner peripheral surface of the powder container, the projection transporting the powder toward the opening when the powder container rotates; and a lid member that covers the opening and has an outlet through which the powder flows, the lid member being held in a non-rotatable manner. The powder container device does not have a structure for scooping the powder, which has been transported by the rotation of the powder container, toward a rotational axis, and discharges the powder through the outlet.

Abstract: According to one embodiment of the present invention, there is provided a powder storage device including: a powder container that stores a powder, the powder container including an opening at one end, being horizontally installed and including a protruding line provided on an inner circumferential surface of the powder container; and a lid member that covers the opening, the lid member including an outflow opening for the powder and being held in an irrotational state, wherein the protruding line is capable of transporting the powder to the opening due to rotation of the powder container, a structure for scooping the powder transported through the rotation of the powder container toward near a rotation shaft is not provided, and the powder is made to flow out through the outflow opening.

Abstract: A powder storage device includes a powder container that has an opening at one end, stores powder therein, and has, on an inner peripheral surface, a rib configured to transport the powder toward the opening with rotation of the powder container, a lid member that is configured to cover the opening, has an outflow opening through which the powder flows, and is held in a non-rotatable state, and a driving-force transmission member interposed between the powder container and the lid member and having a driving-force receiving portion penetrating the lid member in a rotation axis direction, the driving-force transmission member transmitting a rotating force to the powder container.

Abstract: A developing device includes: a first transport member that transports developer in a developer container; a second transport member that transports the developer in a direction opposite to a direction of transport by the first transport member; an inflow portion provided at a downstream end in the direction of transport by the second transport member and on an outer side with respect to an end of a developer carrying body, the inflow portion allowing the developer to flow from a second housing into a first housing; a high-speed transport portion provided in a range corresponding to the inflow portion and that transports the developer at a higher speed; and a regulating member provided at a position corresponding to a downstream end of the high-speed transport portion in the direction of transport by the first transport member and that regulates a height of a mound of developer in the first housing.