The present disclosure relates to cleaning a surface in a printing device, wherein a steam guiding member directs a steam flow towards the surface; wherein the steam flow interacts with a substance on said surface to clean a portion of the surface.

An apparatus comprises a plate cleaner assembly. The plate cleaner assembly further comprises a frame, a roller coupled to the frame, a dry cleaning material coupled to the roller, and a spray assembly coupled to the plate cleaner assembly. The plate cleaner assembly further includes a controller coupled thereto. Moreover, the apparatus further comprises a printing plate cylinder and a printing plate coupled to the printing plate cylinder.

The present disclosure relates to cleaning a surface in a printing device, wherein a guiding member directs a stream of cleaning fluid towards the surface; and at least one barrier unit to confine the stream of cleaning fluid to a portion of the surface, wherein the at least one barrier unit guides air to provide at least one air curtain confining said stream of cleaning fluid to the portion of the surface.

A removable flexible jacket for use in a printing press having a transfer cylinder for transferring a freshly printed substrate comprises a sheet of woven fabric, a beaded film sheet coupled to the sheet of woven fabric, and an image disposed between the sheet of woven fabric and the beaded film sheet. The image is visible through the beaded film sheet, and wherein the image divides at least a portion of a surface of the beaded film sheet into a plurality of zones.

A coating unit is located after a sheet-fed digital printer on a manufacturing line. As a response to a workpiece entering the coating unit from the printer, coating substance is dosed onto a plate cylinder, and said plate cylinder is rotated to transfer said coating substance onto the workpiece, which is then transferred further on the manufacturing line. As a response to a first time limit expiring after transferring the workpiece further without a subsequent workpiece entering the coating unit, the rotation of the plate cylinder is stopped.

An alignment with a liquid jet head can easily be achieved, and surfaces of a jet plate and a guard member and an inside of an opening part of the guard member can be cleaned without injuring the jet plate even when side surfaces of the liquid jet head are not exposed, and a part of the jet plate is not exposed by the guard member. A cleaning device for an inkjet head includes a holder, and the holder includes a jet section which jets a cleaning liquid toward at least one of a nozzle plate and a nozzle guard, a contact part which makes contact with a surface of the nozzle guard provided with the opening part, and a protruding part which is inserted into the opening part in a non-contact state with the nozzle plate, and which guides the holder along a longitudinal direction of the opening part.

A dampening unit that sprays viscous application liquid to a treatment surface includes a rotating brush driven to rotate around the axis, a liquid applicator that supplies the liquid to the brush, and a brush chamber to accommodate the brush. The brush chamber includes a wall that surrounds the brush. The wall defines an ejection window for discharging viscous application liquid that is either sprayed or spun away from the brush.

A system and a method for cleaning a printing cylinder or other printing equipment such as printing plates, ink pans or floors of printing units, the method comprising applying a detergent to the surface to be cleaned, after a period to allow action of the detergent, removing the detergent by rinsing, using a vapor and high velocity air stream, i.e. atomized water fog; or steam; or a combination of steam and air, which allows dislodging particles encrusted within cells of the surface of the piece of equipment to be cleaned.

The maintenance member has the discharge plane, which is adjacent to the cleaning plane in the cleaning direction and recessed downward from the cleaning plane. This discharge plane is provided between the two extended surfaces, which are extended in the cleaning direction respectively from the two contact planes, in the X direction. In such a configuration, a flow of the cleaning liquid falling down from the cleaning plane to the discharge plane in the cleaning direction is formed. Thus, the amount of the cleaning liquid flowing in the X direction from the cleaning plane can be suppressed.

Provided is a device for cleaning exhaust air from a printing device by means of a heat exchanger. The device is configured to operate the heat exchanger in a standard phase such that an output temperature of the exhaust air exhibits a standard value such that hydrocarbons are condensed out of the exhaust air. The device is also configured to operate the heat exchanger in a regeneration phase such that the output temperature of the exhaust air exhibits a value. The value is reduced relative to the standard value, such that water is condensed out of the exhaust air.