Kyocera Document Solutions Inc.

Satoru Nakamura

Naoki Yamane

Teppei Shibuya

Toshinori Muraoka

Ayaka Kurokawa

Masaaki Maruta

Ayaka Kondo

Masayuki Shobayashi

An inkjet recording device includes a conveying unit, a recording unit, a device main body, and a control unit. The conveying unit includes an endless conveyor belt having many air holes for sucking air, and a sheet sucking unit. The sheet sucking unit is disposed inside a loop of the conveyor belt, and includes a fan for sucking air through the air holes and a fan drive motor. The recording unit includes a recording head disposed to face an outer circumference surface of the conveyor belt, so as to eject ink from ink ejection nozzles to the paper sheet sucked and held on the conveyor belt. The control unit executes a paper dust removing mode during image non-recording time, in which it rotates the fan drive motor by a power higher than that when conveying the paper sheet, so as to remove paper dust in the device main body.

Inkjet recording device

The belt conveyance device includes a plurality of rollers, a belt, a meandering correction part, and an adjustment part. The rollers are disposed at intervals each other and rotate around axes. The belt is disposed around the plurality of rollers and travels. The meandering correction part shifts one end portion in an axial direction of a tension roller included in the plurality of rollers in a radial direction within a predetermined range to correct a meandering of the belt. The adjustment part shifts the other end portion in the axial direction of the tension roller in the radial direction such that a position of the one end portion of the tension roller is variable under a state where the meandering of the belt is corrected.

Belt conveyance device with a meandering correction part shifting one end of a tension roller and an adjustment part shifting the other end

The image forming apparatus includes a moving unit, a movable connector, a fixed connector, a wire, a fixed wire guide and a movable wire guide. The moving unit is supported by a casing in an upwardly and downwardly moving manner. The movable connector is provided in the moving unit. The fixed connector is provided in the casing. Both ends of the wire are connected to the movable connector and the fixed connector. The wire has a length longer than a distance between the movable connector and the fixed connector at lifting of the moving unit. The fixed wire guide is supported on the bottom plate of the moving unit. The movable wire guide is supported on the bottom plate of the casing. At least one of the movable wire guide and the fixed wire guide is supported rotatably.

Image forming apparatus

An inkjet recording apparatus includes a printing and conveying unit, a recording head, a raising and lowering mechanism, and a controller. The printing and conveying unit conveys a sheet with the sheet loaded on a loading surface thereof. The recording head is disposed opposite to the loading surface and ejects ink onto the sheet conveyed by the printing and conveying unit. The raising and lowering mechanism includes a wire in contact with the printing and conveying unit. The raising and lowering mechanism winds the wire to raise and lower the printing and conveying unit relative the recording head in a cross direction interesting with the loading surface. The controller controls a winding operation by which the raising and lowering mechanism winds the wire according to a degree of inclination of the wire relative to the cross direction.

Inkjet recording apparatus

An image forming apparatus includes a head unit, a conveyance unit, a lifting and lowering mechanism, a drive source and a transmission mechanism. The head unit is provided with an inkjet head having a discharge opening through which an ink is discharged. The conveyance unit is supported in an upwardly and downwardly movable manner in directions close to and apart from the head unit from a lower side. The lifting and lowering mechanism is configured to lift and lower the conveyance unit. The drive source is configured to drive the lifting and lowering mechanism. The transmission mechanism is configured to transmit driving force from the drive source to the lifting and lowering mechanism. The transmission mechanism includes a warm gear, a warm wheel meshed with the warm gear and a resistance applying member configured to apply resistance to rotation of the warm gear.

An image forming apparatus includes a moving unit and a lifting and lowering mechanism. The moving unit is supported by a casing in an upwardly and downwardly moving manner. A fixed pully and a winding pully are provided in the casing. A movable pulley is provided in the moving unit. A wire is configured to be wound around the fixed pulley and the movable pulley. One end of the wire is fixed to the casing and the other end of the wire is fixed to the winding pulley. A rack is provided in the casing along an upper-and-lower direction. A pinion is provided in the moving unit and configured to be engaged with the rack. The winding pulley is rotated to wind and unwind the wire via the fixed pulley and the movable pulley, and the moving unit is lifted and lowered while the pinion being engaged with the rack.

An intermediate transfer unit includes an endless intermediate transfer belt to which a toner image is primarily transferred from an image carrying member, a driving roller that conveys the intermediate transfer belt with the primarily transferred toner image to a secondary transfer position for a sheet material, and a cleaning device which cleans a peripheral surface of the driving roller around which the intermediate transfer belt is wound.

Intermediate transfer unit having a driving roller cleaning device and an image forming apparatus including the same

In order to prevent interference between a primary transfer bias voltage and a secondary transfer bias voltage, and to prevent occurrence of an image defect due to interference between these bias voltages, an image forming apparatus includes a plurality of primary transfer rollers, an intermediate transfer belt, a drive roller, a secondary transfer roller, and a rectifier roller. A primary transfer bias voltage of a polarity opposite to the polarity of toner is applied to a primary transfer bias applying unit. A secondary transfer bias voltage of a same polarity as the polarity of toner is applied to the drive roller. The rectifier roller is disposed between a most-downstream primary transfer roller and the drive roller. A bias voltage of the same polarity as the polarity of the primary transfer bias voltage or the polarity of the secondary transfer bias voltage is applied to the rectifier roller.

A cleaning device includes a housing, a cleaning blade, and first and second sealing members. The housing has formed therein an opening facing an image carrying member. The cleaning blade removes toner that remains attached to the image carrying member while being in contact with the circumferential surface of the image carrying member. The first and second sealing members prevent waste toner inside the housing from leaking out through a gap between the housing and the image carrying member, owing to the first and second sealing members abutting on the circumferential surface of the image carrying member.

Cleaning device and image forming apparatus therewith

An image forming apparatus includes an intermediate transfer belt, a driving roller, a driven roller, a belt cleaning device, and a counter roller. Toner images formed on image carriers are transferred onto the intermediate transfer belt. The driving and driven rollers rotatably stretch the intermediate transfer belt. The belt cleaning device has a cleaning blade that removes residual toner adhered to the intermediate transfer belt. The counter roller is disposed facing the cleaning blade with the intermediate transfer belt interposed therebetween. The belt cleaning device is disposed at a position that is downstream of the driving roller in a rotation direction of the intermediate transfer belt but is upstream of the driven roller in the rotation direction of the intermediate transfer belt. A leading end edge portion of the cleaning blade is disposed upstream of a top of the counter roller in the rotation direction of the intermediate transfer belt.

A fixing deviceaccording to the present invention includes: a fixing rollerfor fixing a toner image onto a sheet of paper; a plurality of separation clawsin contact with the fixing rollerto separate the sheet of paper, onto which the toner image is fixed, from the fixing roller; a holderfor supporting the plurality of separation claws; and a slide mechanismfor sliding the holderalong a longitudinal direction of the fixing roller

Fixing device and image forming apparatus

An image forming apparatus having a sheet conveyance path guiding a sheet to a sheet exit port after the sheet passes through a fixing device. A conveyance unit constitutes one of a pair of sheet conveyance surface portions of the sheet conveyance path. A first cooling fan is disposed within the conveyance unit and sucks air from an air introducing hole in the conveyance unit that is in communication with the sheet conveyance path. A second cooling fan is disposed on an opposite side of the sheet conveyance path to the conveyance unit and blows air at a sheet passing through the sheet conveyance path. A conveyance guide member is fitted to the conveyance unit and switches a conveyance direction of the sheet passing through the sheet conveyance path. The first cooling fan blows at the conveyance guide member air sucked from the air introducing hole.

An image forming apparatus includes an option board mounting part in which a board for an option device is mounted and an external cover that covers the option board mounting part. The external cover includes a plurality of cover members. The plurality of cover members are disposed adjacent to each other. The plurality of cover members disposed adjacent to each other are respectively provided with overlapping parts overlapping each other.

An image forming apparatus includes a toner case, an apparatus main body, and a cover. The toner case includes a case main body, a shutter, and an operation part. The case main body has a discharge port discharging a toner. The shutter opens/closes the discharge port. The operation part is connected to the shutter. The operation part is movable between a port closing position where the operation part makes the shutter close the discharge port and interferes with the cover and an port opening position where the operation part makes the shutter open the discharge port and permits the cover to be closed. When the cover is closed in the state in which the operation part is located at the port closing position, the cover presses the operation part and the operation part moves from the port closing position to the port opening position.

Image forming apparatus and toner case

A sheet discharge tray according to one aspect of the present disclosure includes an inclined support surface and a rib. The inclined support surface is inclined downward toward a sheet discharge portion and is configured to support a paper sheet discharged from the sheet discharge portion. The rib is provided along the inclined support surface. The rib has a larger elevation angle relative to a horizontal plane as compared to an angle of the inclined support surface.

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Osaka, Japan

Satoru Nakamura