Abstract: A developing device includes a container that contains developer; a rotating body that rotates while carrying the developer and supplies the developer to a latent image formed on an image carrier; a channel through which air in the container is discharged out of the container; a first member that is positioned downstream of a position at which the developer is separated from the rotating body in a rotation direction of the rotating body and with which the developer separated from the rotating body comes into contact; and a second member that is positioned downstream of the first member in the rotation direction of the rotating body and with which the developer separated from the rotating body comes into contact.

Abstract: An image forming apparatus includes an image carrier that holds an image, a developer carrier that holds a developer to be supplied to the image carrier, a transport member that transports the developer in an axial direction of the developer carrier, and a restraint member that restrains the developer, which has scattered as a result of being transported by the transport member, from moving toward the developer carrier.

Abstract: A developing device includes a container that contains developer; a rotating body that rotates while carrying the developer and supplies the developer to a latent image formed on an image carrier; a channel through which air in the container is discharged out of the container; a first member that is positioned downstream of a position at which the developer is separated from the rotating body in a rotation direction of the rotating body and with which the developer separated from the rotating body comes into contact; and a second member that is positioned downstream of the first member in the rotation direction of the rotating body and with which the developer separated from the rotating body comes into contact.

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 developing device includes a developing housing that contains developer; a developer carrier that transports the developer; a layer-thickness regulating member that is provided for an upstream gap between the developer carrier and the developing housing and that regulates a layer thickness of the developer; and a sealing member that is provided for a downstream gap between the developer carrier and the developing housing. The sealing member is fixed to the developing housing at one side and is in contact with the developer on the developer carrier at the other side. The sealing member has cuts extending from a free end of the sealing member by approximately 60% or more of a dimension of the sealing member from the free end to a fixed end in the width direction, and is at an angle of approximately 30° or less with respect to a reference line.

Abstract: A transporting member includes multiple helical blades that helically extend around a rotation shaft and that have an upstream-side blade and a downstream-side blade, an end portion of the upstream-side blade and an end portion of the downstream-side blade overlapping in a direction perpendicular to an axial direction of the rotation shaft, the multiple helical blades transporting an object in the axial direction via rotation of the rotation shaft; a gap portion that divides the upstream-side blade and the downstream-side blade, the upstream-side blade and the downstream-side blade being arranged at a certain angular interval in a circumferential direction of the rotation shaft; and a regulating portion that regulates an amount of the object that passes through a space between the upstream-side blade and the downstream-side blade in a direction in which the object is transported.

Abstract: A developing device includes a developing housing that contains developer; a developer carrier that transports the developer; a layer-thickness regulating member that is provided for an upstream gap between the developer carrier and the developing housing and that regulates a layer thickness of the developer; and a sealing member that is provided for a downstream gap between the developer carrier and the developing housing. The sealing member is fixed to the developing housing at one side and is in contact with the developer on the developer carrier at the other side. The sealing member has cuts extending from a free end of the sealing member by approximately 60% or more of a dimension of the sealing member from the free end to a fixed end in the width direction, and is at an angle of approximately 30° or less with respect to a reference line.

Abstract: A developing device is provided. A rotating shaft of a first transporting member is positioned exactly below a developer carrier. A second virtual tangent to the first transporting member that extends vertically on a side of the first transporting member opposite an image carrier is farther from the image carrier than a first virtual tangent to the developer carrier that extends vertically on a side of the developer carrier opposite the image carrier. A distance between the two virtual tangents is shorter than a distance between the first virtual tangent and a developer container. A developer guiding member that guides a developer toward a downstream side in a direction of transport by the first transporting member is provided on a downstream side in a direction of rotation of the developer carrier with respect to the image carrier, with a gap provided with respect to the developer carrier.

Abstract: A developing device includes a developer container; a developer carrier; a first transport member having a rotation shaft and a transport blade; a second transport member having a rotation shaft and a transport blade; a partition member; a guide member; a first inflow portion; a second inflow portion; and a movement portion. The rotation shaft of the first transport member is located within a projection area of the developer carrier projected from above. A second imaginary tangent line extending vertically and touching an outer end of the transport blade of the first transport member is farther from the image carrier than a first imaginary tangent line extending vertically and touching an outer surface of the developer carrier. A first distance between the first and second imaginary tangent lines is smaller than a second distance between a rotation center of the image carrier and an inner surface of the developer container.

Abstract: An electronic device includes a detection unit that detects movement of at least a housing; an information generation unit that generates vibration information based on a quantity value of a predetermined managed object item and the movement of the housing which is detected by the detection unit; and a vibration unit that vibrates based on the vibration information.

Abstract: A developing device is provided. A rotating shaft of a first transporting member is positioned exactly below a developer carrier. A second virtual tangent to the first transporting member that extends vertically on a side of the first transporting member opposite an image carrier is farther from the image carrier than a first virtual tangent to the developer carrier that extends vertically on a side of the developer carrier opposite the image carrier. A distance between the two virtual tangents is shorter than a distance between the first virtual tangent and a developer container. A developer guiding member that guides a developer toward a downstream side in a direction of transport by the first transporting member is provided on a downstream side in a direction of rotation of the developer carrier with respect to the image carrier, with a gap provided with respect to the developer carrier.

Abstract: A developing device includes a developer container; a developer carrier; a first transport member having a rotation shaft and a transport blade; a second transport member having a rotation shaft and a transport blade; a partition member; a guide member; a first inflow portion; a second inflow portion; and a movement portion. The rotation shaft of the first transport member is located within a projection area of the developer carrier projected from above. A second imaginary tangent line extending vertically and touching an outer end of the transport blade of the first transport member is farther from the image carrier than a first imaginary tangent line extending vertically and touching an outer surface of the developer carrier. A first distance between the first and second imaginary tangent lines is smaller than a second distance between a rotation center of the image carrier and an inner surface of the developer container.

Abstract: An image forming apparatus includes an image carrier, a developer container, a moving mechanism that moves a toner of a developer to the image carrier, a stirring and transporting member that transports the developer in the developer container to the moving mechanism, a layer thickness regulating member that regulates the layer thickness of the developer held by a developer holder of the moving mechanism, and a movement regulating unit that regulates movement of the developer. An end of the movement regulating unit at a stirring and transporting member side is located at the stirring and transporting member side with respect to a tangent line tangent to the outer circumference of the stirring and transporting member and passing through a position where the density of magnetic flux of an attraction magnetic pole of a magnet member of the moving mechanism on the surface of the developing holder is the highest.

Abstract: A developing device includes a sleeve and a magnet roller having first and second magnetic poles, the second magnetic pole being disposed downstream of the first magnetic pole. A magnetic attraction distribution on the sleeve in a region from the first magnetic pole to the second magnetic pole is such that the magnetic attraction decreases from a position of the first magnetic pole toward the downstream side, a gradient of change in the magnetic attraction decreases in a region downstream of a region in which a gradient of reduction in the magnetic attraction temporarily increases, thereby forming an attraction reduction region in which the magnetic attraction is reduced so that developer cannot be held on the sleeve, and the gradient of change in the magnetic attraction increases in a region downstream of the attraction reduction region so that the magnetic attraction increases to a position of the second magnetic pole.

Abstract: A developer-agitating transporter includes helical blades that helically extend around a rotation shaft, the helical blades being arranged at different positions in a direction perpendicular to a longitudinal direction of the rotation shaft; and a gap portion that divides each helical blade into a first blade portion and a second blade portion, which oppose each other across the gap portion, so that the helical blade is discontinuous in a direction in which the helical blade extends. The gap portion causes the first blade portion and the second blade portion to be arranged at a certain angular interval in a circumferential direction of the rotation shaft, and at least one surface of adjacent ones of the helical blades that are adjacent in the circumferential direction of the rotation shaft has a sloped area that is sloped at an angle that changes with respect to an axial direction of the rotation shaft.

Abstract: A developing device includes a developer-carrying member and a developer control member, a supply member, and a rotating member that are disposed opposite the developer-carrying member. The developer-carrying member accommodates a magnetic source that generates a magnetic force for carrying a developer containing magnetic particles on an outer surface thereof. The developer control member controls the thickness of a layer of the developer carried on the outer surface of the developer-carrying member. The supply member rotates to transport the developer in a rotation axis direction thereof and to supply the developer to the developer-carrying member. The rotating member is disposed at a position where the rotating member is submerged in the developer between the developer control member and the supply member and rotates to supply the developer from between the developer control member and the supply member to the supply member.

Abstract: An image forming apparatus includes an image carrier, a developer container, a moving mechanism that moves a toner of a developer to the image carrier, a stirring and transporting member that transports the developer in the developer container to the moving mechanism, a layer thickness regulating member that regulates the layer thickness of the developer held by a developer holder of the moving mechanism, and a movement regulating unit that regulates movement of the developer. An end of the movement regulating unit at a stirring and transporting member side is located at the stirring and transporting member side with respect to a tangent line tangent to the outer circumference of the stirring and transporting member and passing through a position where the density of magnetic flux of an attraction magnetic pole of a magnet member of the moving mechanism on the surface of the developing holder is the highest.

Abstract: An electronic device includes a detection unit that detects movement of at least a housing; an information generation unit that generates vibration information based on a quantity value of a predetermined managed object item and the movement of the housing which is detected by the detection unit; and a vibration unit that vibrates based on the vibration information.

Abstract: A developing device includes a sleeve and a magnet roller having first and second magnetic poles, the second magnetic pole being disposed downstream of the first magnetic pole. A magnetic attraction distribution on the sleeve in a region from the first magnetic pole to the second magnetic pole is such that the magnetic attraction decreases from a position of the first magnetic pole toward the downstream side, a gradient of change in the magnetic attraction decreases in a region downstream of a region in which a gradient of reduction in the magnetic attraction temporarily increases, thereby forming an attraction reduction region in which the magnetic attraction is reduced so that developer cannot be held on the sleeve, and the gradient of change in the magnetic attraction increases in a region downstream of the attraction reduction region so that the magnetic attraction increases to a position of the second magnetic pole.