The invention relates to a cleaning apparatus (10) for functionally regenerating a brush (20) which can be used for washing a flexographic plate; in particular, the apparatus is configured to regenerate a brush (20) comprising a cylindrical core (5) about which a channel (4) supporting filaments (3) is fixed according to a spiral shape. The apparatus comprises a frame defining a rotation axis (100) for the brush and a motorized assembly, which can be operatively connected to an end of said cylindrical core (5) of the brush (20) to rotate it about the rotation axis (100). The apparatus (10) further comprises a cleaning unit (30) comprising a carriage (31), movable along a rectilinear guide (32) and a tool (33) provided with an end (33A) adapted to penetrate into the spaces defined between the turns of the spiral to detach the polymer and monomer residues hardened in said spaces as a result of the use of said brush for said washing.

A method for cleaning a printing fluid off a surface of at least one rotatable component of a printing press includes selecting and executing one of a plurality of predefined cleaning operations in an automated way. The selection is made on the basis of a predefined mathematical model executed on a computer and, when the model is executed, a parameter corresponding to an amount of the printing fluid present on the surface is calculated. The improved cleaning method may be applied in all modes of operation of the printing press and in particular allows detergent, cleaning cloth, and/or water to be saved.

An image based correction system compensates for the image quality artifacts induced by thermal ghosting on evolving imaging member surfaces. With thermal ghosting directly tied to previous image content, a feed forward system determines thermal ghosting artifacts based on images previously rendered and generates an open loop gray-level correction to a current image that mitigates undesirable ghosting. For example, the correction system compensates for the thermal ghosting by making the current image lighter in areas that will be imaged onto warmer blanket regions, thereby cancelling out TRC differences between different temperature regions. A temperature sensor is used to measure the temperature of the imaging blanket due to the stresses induced by the image. This data is used to learn the parameters of the temperature model periodically during operation, and used in subsequent corrections to mitigate thermal ghosting in spite of changes in blanket properties over use and time.

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.

According to an embodiment of the present invention, a printing apparatus that satisfactorily sucks and recovers a printhead is provided. A printing apparatus that includes a transfer member, and the first and second printheads has the following arrangement. The apparatus includes the first and second suction units which suck a plurality of nozzles of the first and second printheads, a common negative-pressure generation unit which generates a negative-pressure for suction by these suction units, and a moving unit which moves these suction units from one end to the other end of each printhead. Then, the moving unit moves the first and second suction units so as to pass through concave gaps with respect to ink discharge surfaces of the first and second printheads corresponding to the first and second suction units at different timings.

A system for printing on a substrate can comprise a conveyor that is configured to move the substrate along a substrate movement axis. The system can further comprise at least one print head array. Each print head array has a plurality of print heads, each print head having a respective orientation axis. The plurality of print heads can have at least a first print head and a second print head, wherein the orientation axis of the first print head is angularly offset from the orientation axis of the second print head. The first print head can be offset from the second print head along the substrate movement axis.

The present invention relates to a water-based or solvent-based washing unit for washing a flexographic plate. The washing unit comprises a containment structure which defines a lower basin and at least two side basins which are supplied with the washing liquid and are arranged so that the water overflowing from the side basins is collected in the lower basin. A brush partially immersed in the liquid bath defined by the basin itself is installed at each basin.

The invention relates to a rotary printing press (10) for printing substrates (18), comprising a substrate transport system (12) which comprises a winder station (14) and an unwinder station (16) configured to transport a substrate (18) during a printing process along a printing handling path (19) from the unwinder station (16) to the winder station (14), wherein the rotary printing press (10) further comprises at least one cleaning unit (46) which is assigned to the printing handling path (19) and adapted to remove ink from the front side of the substrate (18). Further, the invention relates to a method for cleaning a substrate (18).

A micro-fibre anilox cleaning blanket having a cleaning surface area defined by a first pair of parallel edges located on opposing ends of the blanket and a second pair of edges that run between said end edges along either side of the blanket is provided. A connection strip is provided on each end edge of the blanket. The connection strips are configured to form non-permanent slotted relationships with complementary connection elements on print cylinder attachment means such that the blanket can be mounted on a print cylinder. Also provided is a system that includes a plurality of cleaning blankets and a variety of different types of print cylinder attachment means that can be combined to achieve a wide range of cleaning blanket assemblies that correspond to different print cylinder designs.

According to an embodiment of the present invention, a printing apparatus that satisfactorily sucks and recovers a printhead is provided. A printing apparatus that includes a transfer member, and the first and second printheads has the following arrangement. The apparatus includes the first and second suction units which suck a plurality of nozzles of the first and second printheads, a common negative-pressure generation unit which generates a negative-pressure for suction by these suction units, and a moving unit which moves these suction units from one end to the other end of each printhead. Then, the moving unit moves the first and second suction units so as to pass through concave gaps with respect to ink discharge surfaces of the first and second printheads corresponding to the first and second suction units at different timings.