A system comprises a floatation table comprising a plurality of ports to flow gas sufficient to produce a gas bearing to float a substrate over the floatation table; a fluidic network coupled to supply gas to the plurality of ports of the floatation table; and a controller configured to control the fluidic network to independently control flows of gas through ports of the plurality of ports disposed in each of a first zone, a second zone, and a third zone of the floatation table. The first, second, and third zones are defined by sections of the floatation table extending parallel to a direction the substrate is conveyed along the floatation table. The first zone is defined by a central section of the floatation table disposed between two sections defining the second zone, and the first and second zones are disposed between two sections defining the third zone.

A suction device includes a suction hole member including a plurality of suction holes, a suction pump connected to each of the plurality of suction holes, the suction pump configured to suction an air through the plurality of suction holes of the suction hole member to suction a suction target to the suction hole member, and a suction state detector configured to detect a suction state of at least one of the plurality of suction holes corresponding to an end of the suction target suctioned to the suction hole member.

A sheet suction device includes a bearing member configured to bear a sheet on a circumferential surface of the bearing member and rotate, a plurality of suction holes in a bearing region in the circumferential surface of the bearing member, a suction device connected to the plurality of suction holes, the suction device configured to suck the sheet through the plurality of suction holes, and a rotary valve between the bearing member and the suction device. The rotary valve includes: a first member communicating with the suction device, and a second member contacting the first member, the second member communicating with the plurality of suction holes. The first member includes a first groove on a side surface in a circumferential direction of the first member, the first groove communicating with the suction device.

A medium regulating component for use in a medium feeding device feeding sheet media accommodated in an accommodating unit, the component for regulating excessive floating of a medium accommodated in the accommodating unit, the component includes: a regulating member protruding in a horizontal direction from an accommodating unit periphery and contacting the floating medium; a holding member holding the regulating member in a non-contact state with the medium; a first rotating shaft rotatably supporting the regulating member relative to the holding member; and a second rotating shaft rotatably supporting the holding member relative to the accommodating unit, in which when the regulating member receives a pressing force from below in a gravitational direction, rotates about the first rotating shaft in a state where movement of the holding member is suppressed, and pushes the holding member to rotate about the second rotating shaft.

A printing system comprises a media transport device which holds print media, such as paper, against a movable support surface, such as a belt, by vacuum suction through holes in a vacuum platen and transports the print media though a deposition region of one or more printheads, which deposit a print fluid, such as ink, on the print media. The printing system comprises an airflow control device comprising dampers that are moveable along a direction perpendicular to the vacuum platen between an undeployed configuration and a deployed configuration, each damper blocking at least one row of the holes in the deployed configuration. The airflow control device also comprises actuators to move the damper(s). The actuator(s) are controlled to selectively move the damper(s) between the undeployed and deployed configuration based on a position of an inter-media zone between adjacent print media held against the movable support surface.

In some examples, a sheet-processing machine includes a transport unit for transporting sheets. The transport unit includes a feed roller configured as an infeed roller and a feed roller configured as a diverting roller, which define a transport plane of sheets. At least two further feed rollers of the transport unit are arranged outside the transport plane. At least one feed roller of the at least two further feed rollers is configured as a pivoting roller that pivots and/or that can be pivoted about a pivot axis. The pivot axis of the pivoting roller is an axis that is normal of an axis of rotation of the pivoting roller, and the pivoting roller is configured to automatically pivot about the pivot axis.

A device for the surface treatment of a substrate including a transport device, a vacuum suction device, a corona device and a coating device, is described. The transport device is formed as a conveyor belt. The conveyor belt is formed as a vacuum suction belt of the vacuum suction device, and the conveyor belt is formed as a counter electrode of the corona device.

Provided is an image forming apparatus in which paper is stably transferred from a belt transportation unit on an upstream side to a belt transportation unit on a downstream side. Problems as described above are solved by using the image forming apparatus including a first belt transportation unit, a second belt transportation unit, and a third belt transportation unit that transports a recording medium received from the first belt transportation unit to transfer the recording medium to the second belt transportation unit, in which a diameter of an upstream side pulley of the third belt transportation unit is smaller than a diameter of a downstream side pulley of the first belt transportation unit and a diameter of a downstream side pulley of the third belt transportation unit is smaller than a diameter of an upstream side pulley of the second belt transportation unit.

A device for processing of flat elements, especially for the processing of paper blanks, is described. This device comprises a conveyor belt (25) that is guided over a first roller (12a) and a second roller (12b), said conveyor belt being made of metal and being permeable to air, wherein its upper section forms the transport section (25a) and its lower section forms the return section (25b), and a vacuum generator being located under the upper section of the conveyor belt. A laser (30) for cutting the flat elements is located above the transport section (25a). In order to achieve an improved flatness and an increased durability, the conveyor belt (25) consists of an expanded metal.

A conveying unit includes a rotatable roller having a first through-hole between the inside and the outside of the roller. A cylindrical member inside the roller has an opening and defines an annular chamber between the member and the roller. An insert borne by the roller inserted in the first through-hole thereof and contacting an external surface of the cylindrical member has a second through-hole in communication with the outside of the roller and extending through the first through-hole and the annular chamber. The first through-hole of the opening is configured such that, when the roller rotates, the insert transits at the opening, temporarily placing the outside of the roller in fluid communication with the annular chamber via the second through-hole, so that a sheet outside the roller and at the first through-hole is pulled against the roller by aspirating means and is conveyed.