An apparatus for treating a relief precursor having a back side and a relief side. The apparatus includes a housing, a treating means for treating the relief precursor with at least one liquid, a removal means for removing debris and/or liquid from the relief precursor, the removal means arranged downstream of the treating means, and a conveying mechanism configured for transporting the relief precursor in a transport direction through the housing. The removal means includes a liquid removal and guidance body mounted for removing liquid from the back side of the relief precursor. The conveying mechanism is configured for pulling the relief precursor over and against said liquid removal and guidance body whilst the relief precursor is moved in the transport direction, such that in operation liquid is removed from the back side.

The invention relates to a device and method for cleaning the surface of a printing roll, such as an anilox roll. The device includes a laser-equipped assembly adapted to project a laser beam on the surface of the printing roll. The laser-equipped assembly uses a reflector and a lens to guide the laser beam along a predetermined path on the surface of the printing roll. In some embodiments, an autofocus system may be included to move the lens so that the desired focal point for the laser beam on the printing roll surface is achieved.

The present invention aims to provide a method of producing a printed matter that shows suppressed scumming in planography. A method of producing a printed matter, the method including the steps of: allowing a dampening water to adhere to a hydrophilic layer of a planographic printing plate having at least the hydrophilic layer and a heat sensitive layer; allowing an ink to adhere to the heat sensitive layer; and transferring the ink adhering to the heat sensitive layer to an object to be printed; wherein the pH (A) of the ink and the pH (B) of the dampening water are both from 1 to 6.5.

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.

A method for cleaning a printed band of flexible material, in which at least one side printing ink comprises with a device. The device comprises a cleaning organ such as a brush roll, and the method the steps comprises of the contacting of the band which printing ink comprises with a cleaning liquid, and the removal of the printing ink which been brought into contact the cleaning liquid with the cleaning organ to obtain a cleaned band of flexible material. Before the effective of adhered liquid getting rid of, comprises the device a pair of wiper blades into the direction of transport of the band remotely of one another are located and are for the removal of the cleaning liquid the band at an angle first via an uppermost wiper blade and subsequently via a lowermost wiper blade of the pair fed.

Disclosed is an anilox laser cleaning machine that includes: a multi-laser head with laser modules on a horizontal guide of a first movable support associated with the horizontal sliding carriage with the intermediation of brackets coupled to vertical micrometric axes associated with the horizontal sliding carriage controlled by servomotors. Each laser module includes: a laser resonator emitting a laser beam with a focal point in the vertical plane equidistant to the axes of rotation of the traction rollers of the anilox roller; and a vertical tube terminated in a nozzle oriented towards the focal point of the laser beam, connected to a suction source. The machine also includes a rotation detector with a palpate wheel contacting the surface of the anilox roller and associated with an encoder device connected to the electronic system of the machine that, in the absence of movement detection or irregular movement, activates the emergency stop.

A conveying unit conveys a medium by moving a glue belt. The conveying unit includes a vapor application unit and a cleaning unit. The vapor application unit applies heated vapor to a front surface of the glue belt separated from the medium. The cleaning unit cleans the front surface to which the vapor is applied by the vapor application unit.

The invention relates to a device and method for cleaning the surface of a printing roll, such as an anilox roll. The device includes a laser-equipped assembly adapted to project a laser beam on the surface of the printing roll. The laser-equipped assembly uses a reflector and a lens to guide the laser beam along a predetermined path on the surface of the printing roll. In some embodiments, an autofocus system may be included to move the lens so that the desired focal point for the laser beam on the printing roll surface is achieved.

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.

Embodiments of an image panel are provided. The image panel includes a transparent substrate having a first major surface and a second major surface opposite the first major surface. A first image layer is disposed on the second major surface. A diffuser layer is disposed on the first image layer, and a second image layer is disposed on the diffuser layer. The second image layer includes mask regions and image regions. An optical density of the image panel is at least 3.0 in the mask regions and less than 3.0 in the image regions. The image regions are not visible from the first major surface when light is not incident upon the second major surface. The image regions are visible from the first major surface and form a composite image with the first image layer when light is incident upon the second major surface.