Abstract: An inkjet recording apparatus includes a recording head configured to discharge ink, a first waste ink retaining member configured to absorb ink discharged from the recording head, a second waste ink retaining member arranged below the first waste ink retaining member, a first inclined surface configured to flow waste ink overflowing the first waste ink retaining member downward, a waste ink receiving surface connected with a bottom end of the first inclined surface and including a porous body sheet for absorbing waste ink, and a second inclined surface configured to flow waste ink overflowing the porous body sheet to the second waste ink retaining member.

Abstract: There is provided an inkjet printing apparatus which, even in a case where a landing position of ink changes due to a change in a distance between an ejection port of a print head and a support surface of a print medium, the print medium is conveyed by an appropriate conveyance amount. The inkjet printing apparatus detects a changing amount of the landing position of an ink droplet. The conveyance amount of the print medium by a conveying roller and a pinch roller is controlled based upon the detected changing amount.

Abstract: An inkjet printing apparatus is provided which minimizes the amount of inks consumed for preventing the sedimentation of ejected inks on the platen ink absorber and which can effectively prevent the sedimentation of inks. To this end, a comparison is made between the ejected volume of easily sedimenting inks and the ejected volume of sedimentation restraining inks in terms of ink components. If the ejected volume of the sedimentation restraining inks is found not enough, a required amount of sedimentation restraining ink is additionally ejected.

Abstract: A printing apparatus capable of maintaining print sheet conveying performance while keeping apparatus cost low and apparatus size small is provided. The printing apparatus includes a conveying mechanism and a print unit. The conveying mechanism includes a conveying roller which is a driving roller, a plurality of pinch rollers which are passive rollers disposed facing the conveying roller, and a plurality of pinch roller axles supporting the pinch rollers. The print unit prints onto a sheet conveyed by the conveying rollers and the plurality of pinch rollers. The conveying mechanism includes one or more first pinch roller sets including two pinch rollers and a first pinch roller axle supporting the two pinch rollers, and one or more second pinch roller sets including three pinch rollers and a second pinch roller axle supporting the three pinch rollers.

Abstract: A printing apparatus capable of maintaining print sheet conveying performance while keeping apparatus cost low and apparatus size small is provided. The printing apparatus includes a conveying mechanism and a print unit. The conveying mechanism includes a conveying roller which is a driving roller, a plurality of pinch rollers which are passive rollers disposed facing the conveying roller, and a plurality of pinch roller axles supporting the pinch rollers. The print unit prints onto a sheet conveyed by the conveying rollers and the plurality of pinch rollers. The conveying mechanism includes one or more first pinch roller sets including two pinch rollers and a first pinch roller axle supporting the two pinch rollers, and one or more second pinch roller sets including three pinch rollers and a second pinch roller axle supporting the three pinch rollers.

Abstract: A method for cleaning a carriage of an inkjet recording apparatus including a recording head configured to discharge ink to execute recording on a sheet, a conveyance unit configured to convey the sheet, a carriage configured to mount the recording head thereon and to move in a main-scanning direction crossing to a sheet conveyance direction, and a height change mechanism configured to move the carriage in a height direction includes moving the carriage in the main-scanning direction to the outside of a sheet conveyance area of the conveyance unit, conveying a cleaning sheet, to which a fold is previously given, to a recording position, moving the carriage to a first height position via the height change mechanism, moving the carriage to the inside of the sheet conveyance area, moving the carriage to a second height position via the height change mechanism, and conveying the cleaning sheet via the conveyance unit.

Abstract: An inkjet printing apparatus is provided which minimizes the amount of inks consumed for preventing the sedimentation of ejected inks on the platen ink absorber and which can effectively prevent the sedimentation of inks. To this end, a comparison is made between the ejected volume of easily sedimenting inks and the ejected volume of sedimentation restraining inks in terms of ink components. If the ejected volume of the sedimentation restraining inks is found not enough, a required amount of sedimentation restraining ink is additionally ejected.

Abstract: There is provided an inkjet printing apparatus which, even in a case where a landing position of ink changes due to a change in a distance between an ejection port of a print head and a support surface of a print medium, the print medium is conveyed by an appropriate conveyance amount. The inkjet printing apparatus detects a changing amount of the landing position of an ink droplet. The conveyance amount of the print medium by a conveying roller and a pinch roller is controlled based upon the detected changing amount.

Abstract: An inkjet recording apparatus includes an upstream conveying unit that includes a conveying roller and a pinch roller that is in contact with the conveying roller at a position that is displaced downstream of the conveying roller in a conveying direction of a sheet; a recording head that is disposed downstream of the upstream conveying unit and that discharges liquid; a carriage that supports the recording head and scans in a direction that intersects the conveying direction; a platen that supports the sheet at a position facing the recording head; a downstream conveying unit disposed downstream of the carriage and that conveys the sheet; and a control unit that moves the carriage so that a liquid discharge port surface of the recording head is positioned outside a side edge of the sheet when a trailing end of the sheet passes a nip between the conveying roller and the pinch roller.

Abstract: A first rotator is provided on an upstream side of the carriage that holds a print head and a second rotator is provided on a downstream side of the carriage. The print head is allowed to move to a maintenance unit in a first state in which a sheet is in contact with both the first rotator and the second rotator during printing. The print head is not allowed to move to the maintenance unit in a second state in which the sheet is in contact with either one of the first rotator and the second rotator and the sheet is not in contact with the other rotator during printing.

Abstract: A first rotator is provided on an upstream side of the carriage that holds a print head and a second rotator is provided on a downstream side of the carriage. The print head is allowed to move to a maintenance unit in a first state in which a sheet is in contact with both the first rotator and the second rotator during printing. The print head is not allowed to move to the maintenance unit in a second state in which the sheet is in contact with either one of the first rotator and the second rotator and the sheet is not in contact with the other rotator during printing.

Abstract: An inkjet recording apparatus includes an upstream conveying unit that includes a conveying roller and a pinch roller that is in contact with the conveying roller at a position that is displaced downstream of the conveying roller in a conveying direction of a sheet; a recording head that is disposed downstream of the upstream conveying unit and that discharges liquid; a carriage that supports the recording head and scans in a direction that intersects the conveying direction; a platen that supports the sheet at a position facing the recording head; a downstream conveying unit disposed downstream of the carriage and that conveys the sheet; and a control unit that moves the carriage so that a liquid discharge port surface of the recording head is positioned outside a side edge of the sheet when a trailing end of the sheet passes a nip between the conveying roller and the pinch roller.

Abstract: An inkjet printing apparatus is provided which minimizes the amount of inks consumed for preventing the sedimentation of ejected inks on the platen ink absorber and which can effectively prevent the sedimentation of inks. To this end, a comparison is made between the ejected volume of easily sedimenting inks and the ejected volume of sedimentation restraining inks in terms of ink components. If the ejected volume of the sedimentation restraining inks is found not enough, a required amount of sedimentation restraining ink is additionally ejected.

Abstract: A printing apparatus capable of maintaining print sheet conveying performance while keeping apparatus cost low and apparatus size small is provided. The printing apparatus includes a conveying mechanism and a print unit. The conveying mechanism includes a conveying roller which is a driving roller, a plurality of pinch rollers which are passive rollers disposed facing the conveying roller, and a plurality of pinch roller axles supporting the pinch rollers. The print unit prints onto a sheet conveyed by the conveying rollers and the plurality of pinch rollers. The conveying mechanism includes one or more first pinch roller sets including two pinch rollers and a first pinch roller axle supporting the two pinch rollers, and one or more second pinch roller sets including three pinch rollers and a second pinch roller axle supporting the three pinch rollers.

Abstract: An ink jet printing apparatus, which enables high-grade printing to be carried out all over a print medium, includes a print medium conveying section for conveying a print medium, a scanning section for moving a print head that ejects ink droplets along a main scanning direction crossing a direction in which the print medium is conveyed, and a printing control section for controlling an operation performed by the print head to eject droplets. On the basis of a plurality of landing position adjustment values set in association with a plurality of areas in the conveying direction of the print medium, the printing control section controls the operation of ejecting ink droplets in each area.

Abstract: The present invention relates to a recording apparatus for recording an image by discharging an ink, and including a recording head capable of recording to at least one edge of recording medium without any margin, a receiving portion for receiving ink droplets discharged at a position extending beyond the edge of the recording medium, and a conveyance rotary body located at an upstream side of the receiving portion with respect to a conveyance direction of the recording medium. The conveyance rotary body is made conductive to an apparatus body.

Abstract: The present invention relates to an inkjet image forming apparatus capable of recording non-margin images on a recording medium by discharging ink from a recording head to regions within as well as beyond edges of the recording medium. The apparatus includes an ink absorbing material for receiving ink discharged at a position beyond the recording medium and a platen having a holding portion to hold the ink absorbing material and supporting the recording medium at a recording position. The holding section formed at the platen has an opening for receiving the ink and is formed with a wall for holding a periphery of the ink absorbing material and a rib supporting a bottom of the ink absorbing material.

Abstract: It is an object of the present invention to provide an ink jet printing apparatus that enables high-grade printing to be carried out all over a print medium. An ink jet printing apparatus according to the present invention includes print medium conveying section for conveying a print medium, scanning section for moving a print head that ejects ink droplets, along a main scanning direction crossing a direction in which the print medium is conveyed, and printing control section for controlling an operation performed by the print head to eject droplets. On the basis of a plurality of landing position adjustment values set in association with a plurality of areas in the conveying direction of the print medium, the printing control section controls the operation of ejecting ink droplets in each area.

Abstract: An image forming apparatus for forming an image on a recording medium with a recording head, comprising a conveying roller pair for conveying the recording medium, discharging roller pairs for conveying the recording medium in the downstream of the conveying roller pair, and a stepping motor for driving the conveying roller pair and the discharging roller pairs. A peak value of driving current of the stepping motor after a trailing edge of the recording medium passes the conveying roller pair is smaller than a peak value of driving current of the stepping motor before the tailing edge of the recording medium passes the conveying roller pair.

Abstract: The present invention relates to a recording apparatus recording an image by discharging an ink, comprising a recording means for being recordable to at least one edge of a recording medium without any margin, an receiving portion for receiving an ink droplet discharged at a position protruded from the recording medium, a conveyance rotary body located on an upstream side of the opening in a conveyance direction of the recording medium. The conveyance rotary body is made conductive to an apparatus body.