Abstract: A printing system comprising a flexographic printing machine comprising at least one impression cylinder, on which the material in sheet form to be printed is wound and around which at least one printing station is arranged. Each printing station comprises a plate cylinder, which is provided with a graphic element, and an anilox roller. Downstream of each printing station there is at least one drying unit for the inks which emits at least one first air flow and aspirates at least one second air flow; there are also elements for acquiring a coverage value of the graphic element present on the plate cylinder of each printing station and elements for automatically adjusting a flow rate of the first air flow and of the second air flow as a function of the coverage value of the graphic element acquired by the acquisition elements.

Abstract: An apparatus for replacing printing sleeves comprising a handling device which can be removably engaged with a printing sleeve and a movement robot for moving the handling device; the handling device comprises a supporting frame, which is connected to the movement robot and supports a supporting rod which protrudes in a cantilevered manner from the supporting frame, and a grip assembly which is able to translate on command, with respect to the supporting frame, along a movement direction that is substantially parallel to the axis of the supporting rod, between an advanced working position and a retracted working position; the grip assembly is actuatable in rotation about an axis that is substantially parallel to the axis of the supporting rod.

Abstract: An apparatus for replacing printing sleeves which comprises a handling device which can be removably engaged with a printing sleeve and a movement robot for moving the handling device; the handling device comprises a supporting frame and a self-centering grip clamp which is able to translate on command, with respect to the supporting frame, along a movement direction that is substantially parallel to the axis of the supporting rod, between an advanced working position and a retracted working position; the grip clamp has engagement elements which are movable on command between an inactive position and an active position, in which they are radially spaced apart from the axis of the supporting rod, in order to allow their engagement with the internal surface of the printing sleeve.

Abstract: A printing machine comprising advancement elements for advancing material in sheet form to be printed which are provided at least with a traction drum which is designed to receive, at an entry region, the material in sheet form to be printed and to convey it toward an exit region spaced circumferentially apart, along the direction of rotation of the traction drum about its own axis, from the entry region; analog print stations are arranged around the traction drum, between the entry region and the exit region and, between at least two analog print stations, conveyance means are provided for conveying the material in sheet form to be printed which arrives from the traction drum along an advancement path that has at least one advancement portion for advancing the material in sheet form to be printed which extends substantially straight, along which at least one digital print station is arranged.

Abstract: An inking device for printing machines that comprises an inking body which is designed to be arranged so as to face the lateral surface of an anilox roller and forms an inking chamber that is open toward the anilox roller and has at least one inlet for introducing the ink into the inking chamber and at least one outlet for the exit of the ink from the inking chamber, and control elements that are adapted to vary the passage opening of the or of each outlet as a function of the pressure of the ink in the inking chamber.

Abstract: An inking device for printing machines that comprises an inking body which is designed to be arranged so as to face the lateral surface of an anilox roller and forms an inking chamber that is open toward the anilox roller and has at least one inlet for introducing the ink into the inking chamber and at least one outlet for the exit of the ink from the inking chamber, and control elements that are adapted to vary the passage opening of the or of each outlet as a function of the pressure of the ink in the inking chamber.