An inkjet printer including an inkjet head, a head scanning unit, a wave shape generating mechanism to deform a recording medium into a predetermined wave shape, an obtaining device to obtain information concerning a type of the recording medium to be used in a printing operation, a gap information storing device to store gap information related to a gap between an ink discharging surface and the recording medium in association with a predetermined type of the recording medium, the gap information being acquired from a predetermined range in the recording medium, and a correcting device to correct the gap information according to the type of the recording medium obtained by the obtaining device when the type of the recording medium obtained by the obtaining device is different from the predetermined type of the recording medium stored in association with the gap information, is provided.

An inkjet printing device includes a vacuum flatbed table configured to support large and flat substrates with applied vacuum power and while printing, in a hold down area, against the vacuum flatbed table; a removable flat substrate support device configured to support large and flat substrates while printing; and a vacuum belt connected to a plurality of pulleys and wrapped around the vacuum flatbed table; wherein the vacuum flatbed table is configured for coupling the removable flat substrate support device stationary to the vacuum flatbed table by applied vacuum power; and the vacuum belt is sandwiched between the removable flat substrate support device and the vacuum flatbed table.

An image recording apparatus includes a recording section which is provided over a transport passage for transporting a sheet in a transport direction and which has nozzles for discharging an ink onto the sheet; a platen which is provided under the recording section with the transport passage intervening therebetween and which has a plurality of ribs provided to support the sheet while being separated from each other in a widthwise direction of the transport passage perpendicular to the transport direction, the respective ribs protruding upwardly and extending in the transport direction; and a plurality of holding members which are provided to be positioned between the plurality of ribs in the widthwise direction of the transport passage over the platen on an upstream side in the transport direction from the nozzles and which abut against an upper surface of the sheet and press the sheet toward the platen.

A printer uses a mechanical device to correct skew in substrates and uses an electronic lateral registration system to shift ink images to be placed on the de-skewed substrates to remove the need for mechanical components that laterally register de-skewed substrates. The removal of the mechanical lateral registration components enable the substrates to be printed more quickly than printers that use mechanical devices to both de-skew substrates and laterally register de-skewed substrates in a print zone.

There are provided a liquid jetting apparatus and a method of coping with the floating of a medium where power at the time of coping with the floating of a medium can be suppressed. After the floating of a medium (36) is detected, a first movement parameter that represents the speed or acceleration of a first liquid jet head (56C) during movement is set, a second movement parameter that represents the magnitude of speed of a second liquid jet head (56M), which is smaller than the magnitude of the speed of the first liquid jet head, or a second movement parameter that represents a magnitude of acceleration of the second liquid jet head, which is smaller than the magnitude of the acceleration of the first liquid jet head, is set, an operation of the first liquid jet head is started at a first timing, and an operation of the second liquid jet head is started at the same timing as the first timing or at a second timing when the first liquid jet head does not yet reach a first retreat position.

An apparatus can control the movement of a substrate through a manufacturing process. The apparatus can transport the substrate in the machine direction of the manufacturing process and can control the movement of the substrate in the cross-machine direction as well as the z-direction.

A method is provided that is implemented on a control device connected with an inkjet printer, which includes an inkjet head having an ink discharging surface, a head scanning unit reciprocating the inkjet head relative to a recording sheet along a scanning direction parallel to the ink discharging surface, and a wave shape generating mechanism deforming the recording sheet in a predetermined wave shape that has tops of portions protruding in a first direction toward the ink discharging surface and bottoms of portions recessed in a second direction opposite to the first direction alternately arranged along the scanning direction, the method including acquiring gap information related to a gap between the ink discharging surface and each individual one of the tops and the bottoms on the recording sheet, and determining whether the gap information acquired for each individual one of the tops and the bottoms is abnormal.

A platen unit of a printer configured to perform printing while nipping and feeding a linerless label using a thermal head and a platen roller, the platen unit includes the platen roller, a downstream-side wraparound prevention member disposed on a downstream side of a feeding direction of the linerless label with respect to the platen roller, the downstream-side wraparound prevention member being configured to prevent the linerless label from rolling up to the platen roller, and an upstream-side wraparound prevention member disposed on an upstream side of the feeding direction of the linerless label with respect to the platen roller, the upstream-side wraparound prevention member being configured to prevent the linerless label from rolling up to the platen roller, wherein the upstream-side wraparound prevention member and the downstream-side wraparound prevention member are rotatably assembled to a roller shaft of the platen roller independently from each other.

A printing apparatus includes a medium supporting portion for supporting a medium, a head for printing on the medium, a medium pressing member that includes a plurality of materials stacked thereon, and a platen heater for heating the medium pressing member. The medium pressing member includes a base portion being attached to the medium supporting portion, and an eaves portion which forms a gap with the medium supporting portion and suppresses floating of the medium from the medium supporting portion. The base portion includes a first material for forming a first surface being attached to the medium supporting portion, and a second material for forming a second surface on an opposite side of the first surface, and a coefficient of thermal expansion of the first material is higher than a coefficient of thermal expansion of the second material.

An inkjet printer includes: at least one inkjet head configured to eject ink to a sheet and print an image; at least one stiffening conveyor configured to convey the sheet toward the at least one inkjet head in a conveyance direction while stiffening the sheet by deforming the sheet into a wave shape in a width direction orthogonal to the conveyance direction; and at least one platen arranged to face the at least one inkjet head and having a protrusion, the protrusion provided on a surface of the at least one platen facing the at least one inkjet head and configured to support a convex portion in the wave shape of the deformed sheet, the at least one platen configured to support the sheet while keeping the sheet deformed in the wave shape.