Abstract:
A sheet discharging device has a discharge roller pair and a sheet discharge tray arranged selectively either in a first position where the sheet discharge tray is stowed along a side surface of an apparatus main body or in a second position where the sheet discharge tray, swung downward from the first position, protrudes beyond the side surface. The sheet discharge tray has a hook member holding, with one of rotation shafts of the discharge roller pair acting as an engagement shaft, the sheet discharge tray in the first position by engaging with the engagement shaft. As a result of the discharge roller pair being rotated with the sheet discharge tray located in the first position, an engagement releasing member fixed to the engagement shaft releases the engagement of the hook member with the engagement shaft, and the sheet discharge tray moves to the second position.
Abstract:
A toner conveying device includes a toner containing part, a conveying member, and a vibration mechanism. The toner containing part contains a toner. The conveying member rotates around a rotation axis so as to convey the toner in the toner containing part. The vibration mechanism vibrates the conveying member in directions of the rotation axis.
Abstract:
A transfer unit includes first and second rollers of which the second has an elastic layer larger in the axial direction than the first, a roller holder, and a switching cam. One of the first and second rollers is, by rotating the roller holder, arranged opposite the image carrying member and, by rotating the switching cam, arranged selectively either at a reference position to form a transfer nip or at a released position to lie away from the image carrying member. Let the length of the elastic layer of the first roller in the axial direction, the width of the effective image area on the image carrying member to which the toner image can be transferred, and the width of the recording medium of the maximum size allowing transfer using the first roller be L1, L3, and L4 respectively, L4
Abstract:
A transfer unit includes, as transfer rollers, first and second rollers of which the second has an elastic layer larger in the axial direction than the first, first and second bearing members, a roller holder, first and second urging members, a switching cam, a driving mechanism, and a first pre-transfer guide. By rotating the roller holder, the first or second roller is arranged opposite an image carrier and, by rotating the switching cam, the first or second roller arranged opposite the image carrier is arranged selectively either at a reference position where the first or second roller is in pressed contact with the image carrier or at a released position where the first or second roller lies away from the image carrier. With the first or second roller arranged at the reference position, the first pre-transfer guide is arranged at a first guide position.
Abstract:
A sheet storage cassette includes a cassette base and inner rails. The cassette base has side plates facing each other parallel to insertion/withdrawal directions of the sheet storage cassette. The inner rails each have positioning bosses that protrude from each of different positions on the inner rails in a longitudinal direction thereof and a hook portion that protrudes in an L-shape in cross section toward the cassette base and is formed between the positioning bosses. On the side plates of the cassette base, there are provided mounting holes that receive the positioning bosses fitted thereinto at the time of mounting the cassette base to the inner rails, positioning surfaces that comes into contact with two locations on each of the inner rails in a longitudinal direction thereof, and fitted portions that are fitted together with the hook portion in a direction orthogonal to the insertion/withdrawal directions.
Abstract:
This image forming apparatus is equipped with: a conveyance cover which forms a reverse conveyance path; and a double-sided conveyance unit. The conveyance cover is turnably mounted to a body housing, and the double-sided conveyance unit is turnably mounted to the conveyance cover. A side surface of the body housing is equipped with a first abutment surface. The double-sided conveyance unit is equipped with a second abutment surface that abuts on the first abutment surface. The first abutment surface and the second abutment surface are the surfaces against which the double-sided conveyance unit and the surface abut first when the conveyance cover is closed, if in a state where the conveyance cover is opened and the double-sided conveyance unit is separated from the conveyance cover. The abutment presses the double-sided conveyance unit toward a position to cause the conveyance cover to house the double-sided conveyance unit.
Abstract:
Provided is an opening/closing unit including a cover member and a conveying unit. The cover member is provided to one side surface of an apparatus main body so as to open and close a sheet conveying path. The conveying unit is provided inside of the cover member in the apparatus main body. The sheet conveying path includes a first conveying path formed between the conveying unit and the apparatus main body, and a second conveying path formed between the conveying unit and the cover member. When an operating lever of the cover member is rotated to a second position, opening operation of the cover member is enabled. When the operating lever is rotated to a first position in a state where the cover member is opened, the conveying unit rotates with respect to the cover member so that the second conveying path is opened.
Abstract:
A sheet process device includes a supporting member and a process device main body. The supporting member is attached to the lateral face at a side of an in-body sheet ejection space of an image forming apparatus. The process device main body is supported by the supporting member. The process device main body includes a relay conveyance unit and a post process unit. The relay conveyance unit is arranged slidable in a direction to the in-body sheet ejection space. The post process unit is arranged slidable in upward and downward directions with respect to the supporting member. The process device main body provides a sheet conveying path extending from a sheet ejection port of the image forming apparatus to the post process unit through the relay conveyance unit, when the post process unit is moved upwardly after the relay conveyance unit is moved into the in-body sheet ejection space.
Abstract:
In an image formation device, a driven gear is coupled to a far end portion in a unit inserting and withdrawing direction of a rotary fixing member or a rotary pressure member of a fixing unit. A driving gear is provided in a far end portion of a fixing unit housing part and engages with the driven gear when the fixing unit is housed in the fixing unit housing part. The driving gear and the driven gear are formed so that a transmission force transmitted from the driving gear to the driven gear in a mutual engagement position has a component so directed as to horizontally press the fixing unit against columns making a pair. The fixing unit as housed in the fixing unit housing part is pressed by the transmission force against the columns and positioned in a direction orthogonal to the unit inserting and withdrawing direction.
Abstract:
An image forming apparatus includes a conveyance device, a fixing device and an air blower. The conveyance device conveys a medium along a conveyance guide. The fixing device fixes a toner image on the medium thermally by passing the medium between a fixing member and a pressing member which are rotated around axes. The air blower sucks air above the conveyance guide to attract the medium to the conveyance guide, and blows the sucked air to a pair of medium non-passing regions set on both end portions of at least the fixing member and the pressing member in the axial direction.