Abstract: An image forming apparatus, in which a method of correcting a positional deviation of a sheet is performed, includes a detecting device to detect a position of the sheet, a pair of sheet conveying bodies to convey the sheet and correct the positional deviation of the sheet, an image forming device to form an image on the sheet, and circuitry to calculate a first positional deviation amount of the sheet based on a first detection result of the detecting device, cause the pair of sheet conveying bodies to correct the positional deviation of the sheet based on the first positional deviation amount, calculate a second positional deviation amount of the sheet based on a second detection result of the detecting device, and cause the image forming device to correct the positional deviation of an image forming position on the sheet based on the second positional deviation amount.

Abstract: A sheet conveying device, which is included in an image forming apparatus, includes a plurality of position detectors, a leading end detector, and a position adjuster. The plurality of position detectors is configured to detect a position of a sheet. The leading end detector is configured to detect a leading end of the sheet. The position adjuster is configured to, based on a detection result obtained by the plurality of position detectors, rotate in a rotation direction of the sheet within a plane of conveyance of the sheet to change the position of the sheet the position adjuster grips the sheet under conveyance to cause the leading end detector to rotate with the position adjuster in the rotation direction of the sheet within the plane of conveyance of the sheet.

Abstract: A sheet conveying device includable in an image forming apparatus that uses a method of conveying a conveyance target medium and a method of forming an image, includes a position detector, a position adjuster, and circuitry. The position detector is configured to detect a position of a conveyance target medium. Based on a detection of the position of the conveyance target medium by the position detector, the position adjuster moves in at least one of a width direction of the conveyance target medium and a rotation direction of the conveyance target medium within a plane of conveyance of the conveyance target medium and repeatedly adjusts the position of the conveyance target medium while conveying the conveyance target medium. The circuitry changes a conveying speed of the conveyance target medium, according to a change of the position of the conveyance target medium after adjusted by the position adjuster.

Abstract: A feeding device to feed a conveyed medium stacked on a stacker, includes a first suction unit, a second suction unit, and third suction units. The first suction unit includes a suction chamber; a suction fan to exhaust air from the suction chamber; and a first driver to rotate the suction fan. The suction units are disposed above the conveyed medium stacked on the stacker. The second suction unit includes a rotary fan including a board and a plurality of walls extending from the board; and a second driver to rotate the rotary fan. The second suction unit generates a vortex flow directed to the conveyed medium. The plurality of third suction units is disposed in a direction perpendicular to a conveyance direction of the conveyed medium and attracts ends of the conveyed medium in the direction perpendicular to the conveyance direction.

Abstract: A feeding device to feed a conveyed medium stacked on a stacker, includes a first suction unit, a second suction unit, and third suction units. The first suction unit includes a suction chamber; a suction fan to exhaust air from the suction chamber; and a first driver to rotate the suction fan. The suction units are disposed above the conveyed medium stacked on the stacker. The second suction unit includes a rotary fan including a board and a plurality of walls extending from the board; and a second driver to rotate the rotary fan. The second suction unit generates a vortex flow directed to the conveyed medium. The plurality of third suction units is disposed in a direction perpendicular to a conveyance direction of the conveyed medium and attracts ends of the conveyed medium in the direction perpendicular to the conveyance direction.

Abstract: A feeding device includes a plurality of suction units, disposed above a conveyed medium stacked on a stacker, to attract the conveyed medium. At least one of the plurality of suction units includes a rotary fan including a board and a plurality of walls extending from the board; and a driver to rotate the rotary fan. The at least one of the plurality of suction units generates a vortex air with a side of the board with the plurality of walls directed to the conveyed medium. The at least one of the plurality of suction units being a suction unit generates a vortex air.

Abstract: A moving unit of a sheet cutting device is movable in a sheet width direction perpendicular to a sheet feed direction in which a sheet of recording media is fed along a sheet feed path. A cutter holder accommodates a cutter, is connected to the moving unit and is rotatable in a thickness direction of the sheet relative to the moving unit. A guide member is disposed along the sheet width direction to guide the moving unit in the sheet width direction. A drawing member is mounted on the moving unit to draw the moving unit toward a downstream side in a cutting direction in which the cutter holder moves to cut the sheet. The moving unit is connected to the cutter holder at a position downstream in the cutting direction from an accommodated position of the cutter in the cutter holder.

Abstract: An image forming apparatus includes a recording head, a carnage, a sheet cutting device, a cutter position detecting device, and a controller. The cutting device includes a cutter and a cutter unit holding the cutter. A movement area of the carriage overlaps a movement area of the cutter unit in a thickness direction of a sheet. The detecting device detects a position of the cutter unit. The controller performs initial operation upon power on of the apparatus to move the cutter unit to a cutter home position located at one end of the movement area of the cutter unit. The cutter unit, after cutting the sheet, is movable in a width direction of the sheet with the cutter unit retracted from a sheet feed path in the thickness direction. The controller determines whether or not to perform the initial operation based on detection results of the detecting device.

Abstract: A sheet transport device includes: a sheet transporting unit that transports a sheet; a sheet guiding member that is divided into plural member portions and guides the sheet transported from the sheet transporting unit; and a common locating member that is arranged on sides of the sheet guiding member which sandwich the member portions of the sheet guiding member, and collectively locates and holds the member portions of the sheet guiding member.

Abstract: A sheet cutting device includes a cutter holder, a moving unit, and a guide member. The cutter holder accommodates a cutter. The cutter has opposed blades opposing each other to cut a sheet of recording media fed along a sheet feed path of a feed guide plate unit. The moving unit holds the cutter holder and is movable in a sheet width direction perpendicular to a sheet feed direction in which the sheet is fed along the sheet feed path. The guide member is disposed along the sheet width direction to guide the moving unit in the sheet width direction. The cutter holder partially overlaps with the feed guide plate unit in a thickness direction of the sheet perpendicular to both the sheet width direction and the sheet feed direction.

Abstract: A sheet cutting device includes a cutter including opposed blades to cut a sheet fed along a sheet feed path to the device, a cutter holder holding the cutter and reciprocally movable in a width direction of the sheet perpendicular to a sheet feed direction in which the sheet is fed, and a guide member including a first path to guide the holder in the width direction of the sheet to cut the sheet with the cutter and a second path to guide the holder in the width direction after the sheet is cut. The second path is disposed away from the first path in a thickness direction of the sheet perpendicular to both the sheet feed direction and the width direction of the sheet. When the holder moves along the second path, the holder is retracted away from the sheet feed path in the thickness direction of the sheet.

Abstract: An image forming apparatus includes a recording head, a carriage, a sheet cutting device, a cutter position detecting device, and a notification device. The carriage mounts the recording head and is reciprocally movable in a width direction of a sheet perpendicular to a sheet feed direction. The sheet cutting device includes a cutter and a cutter holder. A movement area of the carriage overlaps, in a thickness direction of the sheet, a movement area of the cutter holder in which the cutter holder moves to cut the sheet with the cutter. The cutter holder, after cutting the sheet, is movable in the width direction of the sheet with the cutter holder being retracted from the sheet feed path in the thickness direction of the sheet. The notification device notifies a user of an abnormality of the cutter holder based on a detection result of the cutter position detecting device.

Abstract: An image forming apparatus includes a carriage in which recording heads including nozzles for jetting liquid droplets are mounted; and a conveying unit configured to convey a recording medium facing the recording heads. The recording heads include a first recording head and a second recording head having a wider printing width than that of the first recording head. The conveying unit includes a guide member configured to guide the recording medium facing the recording heads. Recessed shape parts arranged in at least a medium conveying direction are formed in the guide member. The recording medium can be suctioned by generating negative pressure at the recessed shape parts. A partition wall part between the recessed shape parts is provided at a position corresponding to a downstream side edge in the medium conveying direction of the first recording head.

Abstract: A sheet cutting device includes a cutter holder, a moving unit, a connecting member, and a drawing member. The cutter holder accommodates a cutter. The cutter has opposed blades opposing each other to cut a sheet of recording media fed along a sheet feed path. The moving unit is disposed away from the cutter holder in a sheet feed direction in which the sheet is fed along the sheet feed path. The moving unit is reciprocally movable in a sheet width direction perpendicular to the sheet feed direction. The connecting member connects the cutter holder to the moving unit. The drawing member is mounted on the moving unit to draw the moving unit in the sheet width direction. The cutter holder is pivotable around the connecting member in a thickness direction of the sheet relative to the moving unit.

Abstract: A sheet cutting device to cut a sheet conveyed through a conveyance path to a predetermined length, including a cutter casing movable in a sheet width direction perpendicular to a sheet conveyance direction while retracted from the sheet conveyance path after cutting of the sheet, a movable member separate from the cutter casing in the sheet conveyance direction and movable in the sheet width direction, a connection member to connect the cutter casing and the movable member, and a restriction unit to transform a state of the cutter casing between a displacement restriction state in which displacement of the cutter casing is restricted during the cutting of the sheet and a released state in which the restriction of displacement of the cutter casing is released while the cutter casing is retracted from the sheet conveyance path.

Abstract: An image forming apparatus including an image forming unit to form an image on a sheet, disposed in an upper portion of the image forming apparatus; at least upper and lower sheet roll supporters provided one above the other below the image forming unit to support a sheet roll, the lower sheet roll supporter offset proximally toward a front surface of the image forming apparatus from the upper sheet roll supporter; and multiple openings provided in the front surface of the image forming apparatus for the at least upper and lower sheet roll supporters through which the sheet roll is set to the at least upper and lower sheet roll supporters, an upper edge of the opening for the upper sheet roll supporter having a sloped portion tilting downward from the front surface to the back of the image forming apparatus.

Abstract: An image forming apparatus including an image reading unit to read an image of a document, disposed in an upper portion of the image forming apparatus; an image forming unit to form the image on a sheet, disposed below the image reading unit; at least upper and lower sheet roll supporters provided one above the other below the image forming unit to support a sheet roll, the lower sheet roll supporter offset proximally toward a front surface of the image forming apparatus from the upper sheet roll supporter; and multiple openings provided in the front surface of the image forming apparatus for the at least upper and lower sheet roll supporters through which the sheet roll is set to the at least upper and lower sheet roll supporters from a front surface side of the image forming apparatus.

Abstract: An image forming apparatus includes a recording head, a head holder, a cutter, and a cutter holder. The recording head ejects ink onto a sheet of recording media fed along a sheet feed path to record an image on the sheet. The head holder holds the recording head. The cutter includes opposed blades opposing each other with the sheet interposed therebetween. The cutter holder holds the cutter and is reciprocally movable in a width direction of the sheet perpendicular to a sheet feed direction in which the sheet is fed along the sheet feed path. The cutter holder is disposed downstream from the recording head in the sheet feed direction and within a width of the head holder in the sheet feed direction.

Abstract: An image forming apparatus includes a carriage in which recording heads including nozzles for jetting liquid droplets are mounted; and a conveying unit configured to convey a recording medium facing the recording heads. The recording heads include a first recording head and a second recording head having a wider printing width than that of the first recording head. The conveying unit includes a guide member configured to guide the recording medium facing the recording heads. Recessed shape parts arranged in at least a medium conveying direction are formed in the guide member. The recording medium can be suctioned by generating negative pressure at the recessed shape parts. A partition wall part between the recessed shape parts is provided at a position corresponding to a downstream side edge in the medium conveying direction of the first recording head.

Abstract: An image forming apparatus includes a sheet feed device to feed a sheet along a sheet feed path, a sheet cutting device including a cutter and a cutter holder to cut the sheet to a desired length, a controller to control the sheet feed device and the cutter holder. The cutter holder holds the cutter and is reciprocally movable in a width direction of the sheet perpendicular to a sheet feed direction. The cutter holder, after cutting the sheet, is movable in the width direction with the cutter holder retracted away from the sheet feed path in a thickness direction of the sheet perpendicular to both the sheet feed direction and the width direction. The controller controls the sheet feed device to feed the sheet while the cutter holder moves in the width direction with the cutter holder retracted away from the sheet feed path in the thickness direction.