Provided are a head life evaluation apparatus and method capable of evaluating lifespans of nozzles by using a plurality of chambers having different environments, the head life evaluation apparatus including a head block including at least one first nozzle for ejecting a treatment liquid in an inkjet manner, and a chamber block detachably coupled to the head block and including at least one first chamber corresponding to the first nozzle to evaluate a lifespan of the first nozzle in a first environment.

A transport device includes a transport belt having a support surface configured to support a medium, and configured to transport the medium supported by the support surface, a cleaning roller including an absorbent member configured to absorb cleaning liquid, and configured to clean the support surface as the absorbent member comes into contact with the support surface, a supply unit configured to supply the cleaning liquid to the cleaning roller, and a spray unit configured to spray gas to the support surface cleaned by the cleaning roller. The spray unit is configured to spray the gas to the cleaning roller.

A ductor roller for printing machines has a shaft provided with an air supply pipe, plural individual ductor rollers, and plural electromagnetic valves, both connected to the shaft. The individual ductor rollers advance pneumatically by the electromagnetic valves. The individual ductor rollers have housings that are associated with the shaft and configured to move forward and backward; roller members configured to contact with the ink fountain roller and an ink distribution roller; and bearings connecting the roller members to the housings. The electromagnetic valves are placed in the housings. Protection members for the electromagnetic valves are oil-resistant, have circularly cylindrical or arc-like covers, and are associated with the shaft. They cover the side ends of the housings and are placed in the clearance between the individual ductor rollers. The protection members do not need an exchange, discharge cleaning liquid for printing machines along troughs and prevent the electromagnetic valves from being contaminated by the cleaning liquid.

A service tracking system for a printing press (1), spray applicator (1′) or the like includes at least one replaceable component (10) having at least one memory unit (20). The service tracking system further includes a controller (30) which is connected to the memory unit (20). The controller (30) is configured to control the operation of the replaceable component (10) and to periodically update data stored on the memory unit (20) related to run-time data regarding the operation of the specific replaceable component (10).

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 cleaning device for a surface of a cylinder of a printer and/or a copier includes a cylindrical cleaning element which can be rotated by at least one drive and which includes a cleaning fitting on its outer periphery, and a suction or suctioner conducting at least one suction medium with at least one suction channel aligned towards the outer periphery of the cleaning element and extending along the longitudinal alignment of the cleaning element. In order to achieve a simple technical structure and a low maintenance effort apart from a good cleaning result and reliable dirt removal, a suction slit extending longitudinally of the suction channel is aligned towards the cleaning element opens into the suction channel tangentially to the suction channel cross section.

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.

The invention relates to a spray pipe (1), in particular for a printing press roller cleaning device, wherein the spray pipe (1) extends at least in regions in a longitudinal direction and has a plurality of liquid discharge openings (5, 7, 11) which are formed in a wall of the spray pipe (1), wherein a first liquid discharge opening (5) extends with respect to a first direction and a second liquid discharge opening (7) adjacent to the first liquid discharge opening (5) extends in relation to a second direction, the second direction being different from the first direction in such a way that the direction vectors (6, 8) of the first and the second direction intersect in an atomizing region (10) which is spaced apart from the lateral surface (9) of the spray pipe (1).

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.

A ductor roller for printing machines has a shaft provided with an air supply pipe, plural individual ductor rollers, and plural electromagnetic valves, both connected to the shaft. The individual ductor rollers advance pneumatically by the electromagnetic valves. The individual ductor rollers have housings that are associated with the shaft and configured to move forward and backward; roller members configured to contact with the ink fountain roller and an ink distribution roller; and bearings connecting the roller members to the housings. The electromagnetic valves are placed in the housings. Protection members for the electromagnetic valves are oil-resistant, have circularly cylindrical or arc-like covers, and are associated with the shaft. They cover the side ends of the housings and are placed in the clearance between the individual ductor rollers. The protection members do not need an exchange, discharge cleaning liquid for printing machines along troughs and prevent the electromagnetic valves from being contaminated by the cleaning liquid.