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 document carrier device is provided for supporting and transporting a document in a document processing system. The device includes a workpiece carrier having a support surface for receiving a document; a heating device having a heat conducting element for transferring heat generated; and an actuator for causing relative movement between the heat conducting element and the workpiece carrier to change between a first mode of operation and a second mode of operation. In the first mode of operation, the heat conducting element extends, without thereby being in mechanical contact with the workpiece carrier, through one or more recesses in the workpiece carrier in the region of the support surface to be able to transfer heat generated by the heating device, at least in part, to a document received. In the second mode of operation, the heat conducting element has a distance from the support surface which is increased.

A printing apparatus includes a conveyance unit, a printing unit, a platen section facing the printing unit, a regulation unit arranged on a downstream side of the printing unit in the conveyance direction and configured to regulate a height position of the print medium, and a guide section arranged on a downstream side of the platen section. The guide section includes a first declined section declined, a second declined section arranged on the downstream side of the first declined section in the conveyance direction, and an inclined section inclined, from the second declined section to the downstream side in the conveyance direction. A declination of the second declined section is more moderate than the first declined section, and the regulation unit faces the guide section.

A holder assembly includes a base, a drive assembly coupled to the base, a motive source connected to the drive assembly, a vertical force applicator connected to the drive assembly along a connection edge thereof, and a gripping member coupled to the base, the gripping member having a contact surface coupled to a vacuum source, wherein the drive assembly has a first position with the flattening member engaged with the contact surface and a second position with the flattening member positioned away from the contact surface.

A holder assembly includes a base, a drive assembly coupled to the base, a motive source connected to the drive assembly, a vertical force applicator connected to the drive assembly along a connection edge thereof, and a gripping member coupled to the base, the gripping member having a contact surface coupled to a vacuum source, wherein the drive assembly has a first position with the flattening member engaged with the contact surface and a second position with the flattening member positioned away from the contact surface.

A pretreatment device includes a platen, guide that guide a conveyance of the platen from a set position at which a recorded medium is set on an upper surface, a spray that sprays a pretreatment agent onto the recording medium set on an upper surface of the platen, an input portion into which is input at least one of an application range of the pretreatment agent onto the recording medium or an application amount of the pretreatment agent, a processor; and a memory storing computer-readable instructions. The computer-readable instructions also includes setting, on the basis of at least one of the application range or the application amount input into the input portion, at least one of a conveyance speed of the platen or a spray duty ratio that is a ratio of a spray time during a spray period of the pretreatment agent.

A pretreatment device includes a platen, guide that guide a conveyance of the platen from a set position at which a recorded medium is set on an upper surface, a spray that sprays a pretreatment agent onto the recording medium set on an upper surface of the platen, an input portion into which is input at least one of an application range of the pretreatment agent onto the recording medium or an application amount of the pretreatment agent, a processor; and a memory storing computer-readable instructions. The computer-readable instructions also includes setting, on the basis of at least one of the application range or the application amount input into the input portion, at least one of a conveyance speed of the platen or a spray duty ratio that is a ratio of a spray time during a spray period of the pretreatment agent.

A printing system comprises an air-transmissive platen, a vacuum source, a cap and a controller. The vacuum source is configured to draw air through the platen to bias print media towards the platen. The cap is provided on a surface of the platen, between the vacuum source and the platen. The cap is configured to limit air flow through the platen, and comprises a plurality of closable openings provided in a plurality of zones along a length of the cap in a print media advance direction. The controller is configured to selectively open or close the openings of each of the plurality of zones to permit airflow through a portion of the platen overlain by print media and limit airflow through a portion of the platen not overlain by print media.

A printing system comprises an air-transmissive platen, a vacuum source, a cap and a controller. The vacuum source is configured to draw air through the platen to bias print media towards the platen. The cap is provided on a surface of the platen, between the vacuum source and the platen. The cap is configured to limit air flow through the platen, and comprises a plurality of closable openings provided in a plurality of zones along a length of the cap in a print media advance direction. The controller is configured to selectively open or close the openings of each of the plurality of zones to permit airflow through a portion of the platen overlain by print media and limit airflow through a portion of the platen not overlain by print media.

A printer for printing on rolled paper includes an air pressure sensor that detects air pressure, a platen that has a suction hole and is installed on a transport path of the rolled paper, a suction fan that sucks the rolled paper via the suction hole, and a control section that performs control for changing a rotation speed of the suction fan according to a detection result of the air pressure sensor.