Abstract: Provided are a positive electrode terminal and a negative electrode terminal being terminals of a capacitor element; a positive electrode conductor plate connected to the positive electrode terminal; a negative electrode conductor plate connected to the negative electrode terminal; and a power conversion module connected to the two conductor plates. The positive electrode terminal and the negative electrode terminal are formed along an arrangement direction of the capacitor element. The positive electrode conductor plate and the negative electrode conductor plate form a laminated conductor portion in which the positive electrode conductor plate and the negative electrode conductor plate have respective main surfaces disposed, to face the main surface of the capacitor element, and are laminated to each other.

Abstract: An image forming apparatus includes a transfer belt and a plurality of image forming units. The image forming unit includes a photosensitive drum and a charge elimination part. The charge elimination part of a predetermined image forming unit irradiates a downstream area of the primary transfer position on the photosensitive drum of the predetermined image forming unit with post-transfer charge elimination light and irradiates an upstream area of a primary transfer position on the photosensitive drum of the other image forming unit disposed on a downstream side of the predetermined image forming unit in the conveyance direction. A slit part is provided between the predetermined image forming unit and the other image forming unit for narrowing an irradiation width of the pre-transfer charge elimination light in a circumferential direction of the photosensitive drum.

Abstract: An image forming apparatus includes an electrical box. The electrical box has an opening for putting and removing a hard disk into and from the electrical box therethrough, a hard-disk receiving space facing the opening and receiving the hard disk, a board receiving space receiving an electrical board, and a box-shaped partition wall separating the hard-disk receiving space and the board receiving space and having formed therein an insertion hole allowing a cable to be inserted therethrough.

Abstract: An image forming apparatus includes a frame side plate. A mounting surface of the frame side plate on which a first electrical board is mounted has a frame protruding plate. An electrical box has a box protruding plate overlapping a side surface of the frame protruding plate when assembling of the electrical box to the frame side plate is completed, and engaging portions for assembling protruding in a thickness direction from the box protruding plate. When the electrical box is assembled to the frame side plate, with the engaging portions for assembling in engagement with first engaged portions formed on a protruding side end of the frame protruding plate, the electrical box as a whole is turned around an axis parallel to an extending direction of the frame protruding plate with the engaged portions as a fulcrum, thereby restricting a trajectory of the electrical box during assembling.

Abstract: An image forming apparatus includes a toner container, a storage part, a cover and an opening/closing mechanism. The toner container includes a shutter. The cover is movable between a closed position for closing the storage part and an opened position for opening the storage part. The opening/closing mechanism closes a supply port by rotating the shutter in accordance with an opening operation for moving the cover to the opened position and opens the supply port by rotating the shutter in accordance with a closing operation for moving the cover to the closed position, in a state where the toner container is attached to the storage part. The toner container includes an interference portion which interferes with the opening/closing mechanism to prevent the toner container from being attached to the storage part in a case where the cover is not moved to the opened position normally.

Abstract: An image forming apparatus includes a toner container, a storage part, a cover and an opening/closing mechanism. The toner container includes a shutter. The cover is movable between a closed position for closing the storage part and an opened position for opening the storage part. The opening/closing mechanism closes a supply port by rotating the shutter in accordance with an opening operation for moving the cover to the opened position and opens the supply port by rotating the shutter in accordance with a closing operation for moving the cover to the closed position, in a state where the toner container is attached to the storage part. The toner container includes an interference portion which interferes with the opening/closing mechanism to prevent the toner container from being attached to the storage part in a case where the cover is not moved to the opened position normally.

Abstract: An image forming apparatus includes a transfer belt and a plurality of image forming units. The image forming unit includes a photosensitive drum and a charge elimination part. The charge elimination part of a predetermined image forming unit irradiates a downstream area of the primary transfer position on the photosensitive drum of the predetermined image forming unit with post-transfer charge elimination light and irradiates an upstream area of a primary transfer position on the photosensitive drum of the other image forming unit disposed on a downstream side of the predetermined image forming unit in the conveyance direction. A slit part is provided between the predetermined image forming unit and the other image forming unit for narrowing an irradiation width of the pre-transfer charge elimination light in a circumferential direction of the photosensitive drum.

Abstract: An image forming apparatus includes a frame side plate. A mounting surface of the frame side plate on which a first electrical board is mounted has a frame protruding plate. An electrical box has a box protruding plate overlapping a side surface of the frame protruding plate when assembling of the electrical box to the frame side plate is completed, and engaging portions for assembling protruding in a thickness direction from the box protruding plate. When the electrical box is assembled to the frame side plate, with the engaging portions for assembling in engagement with first engaged portions formed on a protruding side end of the frame protruding plate, the electrical box as a whole is turned around an axis parallel to an extending direction of the frame protruding plate with the engaged portions as a fulcrum, thereby restricting a trajectory of the electrical box during assembling.

Abstract: An image forming apparatus includes an image carrying member, a developing device, a toner holder, a toner holder mount portion, and a locking member. The toner holder is dismountably mounted in the toner holder mount portion and stores toner for the developing device. The toner holder mount portion has a pair of side support rails supporting a side face of the toner holder. The locking member is adjacent to an end part, in the toner holder mounting direction, of at least one side support rail, and is swingable between a first position restraining mounting and dismounting of the toner holder and a second position allowing mounting and dismounting of the toner holder. The locking member, in the second position, is on the extension line of the side support rails and, together with the side support rails, guides the toner holder to and from the toner holder mount portion.

Abstract: An image forming apparatus includes an image carrying member, a developing device, a toner holder, a toner holder mount portion, and a locking member. The toner holder is dismountably mounted in the toner holder mount portion and stores toner for the developing device. The toner holder mount portion has a pair of side support rails supporting a side face of the toner holder. The locking member is adjacent to an end part, in the toner holder mounting direction, of at least one side support rail, and is swingable between a first position restraining mounting and dismounting of the toner holder and a second position allowing mounting and dismounting of the toner holder. The locking member, in the second position, is on the extension line of the side support rails and, together with the side support rails, guides the toner holder to and from the toner holder mount portion.

Abstract: An image forming apparatus includes an electrical box. The electrical box has an opening for putting and removing a hard disk into and from the electrical box therethrough, a hard-disk receiving space facing the opening and receiving the hard disk, a board receiving space receiving an electrical board, and a box-shaped partition wall separating the hard-disk receiving space and the board receiving space and having formed therein an insertion hole allowing a cable to be inserted therethrough.

Abstract: An image forming apparatus includes an image carrier, a development unit, and an apparatus main body. On the image carrier, an electrostatic latent image is formed. The development unit develops the electrostatic latent image formed on the image carrier. To the apparatus main body, the development unit is attached. The development unit includes a toner supplying member, a supporting member, at least one mounting component, and at least one pressing member. The toner supplying member supplies a toner to the image carrier. The supporting member supports the toner supplying member. The at least one mounting component is positioned to the apparatus main body and rotatably supports the supporting member. The at least one pressing member presses the toner supplying member to the image carrier by biasing the supporting member in a rotating direction.

Abstract: An image forming apparatus includes an image carrier, a removal roller, a collection roller, a housing, a screw, and a seal. The removal roller rotates while in contact with the intermediate transfer belt and removes residual toner from the intermediate transfer belt. The collection roller rotates while in contact with the removal roller so as to collect, from the removal roller by electrostatic force, waste toner that is the residual toner removed by the removal roller. The housing has an upper opening for receiving the waste toner collected by the collection roller and stores the waste toner. The screw conveys the waste toner stored in the housing. The seal comes into contact with the collection roller and closes a gap between the collection roller and the housing at the upper opening.

Abstract: An image forming apparatus includes an image carrier, a development unit, and an apparatus main body. On the image carrier, an electrostatic latent image is formed. The development unit develops the electrostatic latent image formed on the image carrier. To the apparatus main body, the development unit is attached. The development unit includes a toner supplying member, a supporting member, at least one mounting component, and at least one pressing member. The toner supplying member supplies a toner to the image carrier. The supporting member supports the toner supplying member. The at least one mounting component is positioned to the apparatus main body and rotatably supports the supporting member. The at least one pressing member presses the toner supplying member to the image carrier by biasing the supporting member in a rotating direction.

Abstract: An image forming apparatus includes an image carrier, a removal roller, a collection roller, a housing, a screw, and a seal. The removal roller rotates while in contact with the intermediate transfer belt and removes residual toner from the intermediate transfer belt. The collection roller rotates while in contact with the removal roller so as to collect, from the removal roller by electrostatic force, waste toner that is the residual toner removed by the removal roller. The housing has an upper opening for receiving the waste toner collected by the collection roller and stores the waste toner. The screw conveys the waste toner stored in the housing. The seal comes into contact with the collection roller and closes a gap between the collection roller and the housing at the upper opening.

Abstract: An image forming apparatus includes a housing, a conveyance member, and a sheet member. The housing forms a conveyance path along which toner is conveyed. The conveyance member is supported by the housing. The conveyance member rotates about a rotation axis thereof to convey the toner. The sheet member is disposed on a contact region of the housing where the conveyance member comes in contact with the housing.

Abstract: An image foiining apparatus includes a housing, a conveyance member, and a sheet member. The housing forms a conveyance path along which toner is conveyed. The conveyance member is supported by the housing. The conveyance member rotates about a rotation axis thereof to convey the toner. The sheet member is disposed on a contact region of the housing where the conveyance member comes in contact with the housing.

Abstract: A drive-side coupling part of a drive transmission mechanism includes: a base including a first opposed surface facing a driven-side coupling part of the drive transmission mechanism in an attached state; a semispherical projection from the first opposed surface at a rotational center of the drive-side coupling part; and a cylindrical projection including an arcuate first projection centered on the rotational center, an arcuate second projection having a shorter inside diameter than the first projection, and a stepped portion between the first and second projections. The driven-side coupling part includes: a base including a second opposed surface facing the drive-side coupling part in the attached state; a columnar projection from the second opposed surface at a rotational center of the driven-side coupling part; a radially-extended peripheral projection on a periphery of the columnar projection; and a recess depressed from a top surface of the columnar projection at the rotational center.

Abstract: A developing device includes a development roller, a toner supply roller, a casing having an inner wall portion facing toward the development roller, a flexible film member, an urging member, a linkage member, and a linkage member driving mechanism. The flexible film member is disposed on the inner wall portion and has ends in a direction of an axis of the development roller that are opposite to each other. The urging member is connected with one of the ends of the film member and pulls the film member. The linkage member is connected with the other of the ends of the film member. The linkage member driving mechanism drives the linkage member in accompaniment to rotation of a gear to intermittently pull the film member, so that the film member reciprocates in directions parallel to the axis of the development roller.

Abstract: There are provided a neutralization device, a neutralization method and an image forming apparatus including such a neutralization device. In the neutralization device that includes a plurality of light sources and that applies neutralization light to the charged circumferential surface of the photosensitive drum from the light sources to neutralize the photosensitive drum, the amount of neutralization light on the circumferential surface of the photosensitive drum can be made constant in the drum shaft direction. The neutralization device includes a light amount control wall portion that is extended in the drum shaft direction, and corresponding portions between the light sources adjacent to each other in the light amount control wall portion are formed in such a shape or formed of such a material that the amount of the neutralization light on the circumferential surface of the photosensitive drum is made constant in the drum shaft direction.