An inking unit of a printing unit and a device for printing on hollow bodies each have a cylindrical lateral surface. The device comprises the inking unit. The inking unit has an anilox roller which receives a printing ink from an ink reservoir and has an inking roller placed against a printing cylinder of the printing unit. A rider roller is arranged axially parallel to the anilox roller in a region between the ink reservoir and the inking roller, that region being located subsequent to the ink reservoir in a direction of rotation of the anilox roller. The ink reservoir interacts with the anilox roller. The rider roller is placed against the anilox roller. The rider roller is rotationally driven by the anilox roller by friction. The inking roller is rotationally driven by the anilox roller by friction. The plate cylinder and the anilox roller are each independently rotationally driven by a motor.

An inking system is used to transfer a plurality of different inks to an anilox roller in a flexographic printing plate in a flexographic printing system. A fountain roller includes a plurality of ink transfer zones separated by recessed zones, and a segmented ink tray includes a plurality of ink tray segments corresponding to each of the ink transfer zones, wherein the fountain roller is positioned such that the ink transfer zones contact the anilox roller. Each ink transfer zone of the fountain roller is adapted to receive ink from the corresponding ink tray segment and transfer the received ink to a corresponding zone of the anilox roller.

An inking system is used to transfer a plurality of different inks to an anilox roller in a flexographic printing plate in a flexographic printing system. A fountain roller includes a plurality of ink transfer zones separated by recessed zones, and a segmented ink tray includes a plurality of ink tray segments corresponding to each of the ink transfer zones, wherein the fountain roller is positioned such that the ink transfer zones contact the anilox roller. Each ink transfer zone of the fountain roller is adapted to receive ink from the corresponding ink tray segment and transfer the received ink to a corresponding zone of the anilox roller.

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.

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.

An ink tray insert is adapted to be inserted into a conventional ink tray in a printing system. The ink tray insert includes a bottom surface having an outer profile that substantially conforms to an inner profile of a bottom surface of the conventional ink tray, and left and right side walls that extend upwards from left and right edges of the bottom surface, respectively. Bearing saddles are mounted on the left and right side walls adapted to receive bearings mounted on a shaft of a fountain roller, the ink tray insert being adapted to supply ink to the fountain roller in an ink transfer zone. A cross-track width of the ink tray insert between the left and right side walls is less than a cross-track width of the conventional ink tray.

An ink tray insert is adapted to be inserted into a conventional ink tray in a printing system. The ink tray insert includes a bottom surface having an outer profile that substantially conforms to an inner profile of a bottom surface of the conventional ink tray, and left and right side walls that extend upwards from left and right edges of the bottom surface, respectively. Bearing saddles are mounted on the left and right side walls adapted to receive bearings mounted on a shaft of a fountain roller, the ink tray insert being adapted to supply ink to the fountain roller in an ink transfer zone. A cross-track width of the ink tray insert between the left and right side walls is less than a cross-track width of the conventional ink tray.

An ink tray insert is adapted to be inserted into a conventional ink tray in a printing system. The ink tray insert includes a bottom surface having an outer profile that substantially conforms to an inner profile of a bottom surface of the conventional ink tray, and left and right side walls that extend upwards from left and right edges of the bottom surface, respectively. Bearing saddles are mounted on the left and right side walls adapted to receive bearings mounted on a shaft of a fountain roller, the ink tray insert being adapted to supply ink to the fountain roller in an ink transfer zone. A cross-track width of the ink tray insert between the left and right side walls is less than a cross-track width of the conventional ink tray.

An ink tray insert is adapted to be inserted into a conventional ink tray in a printing system. The ink tray insert includes a bottom surface having an outer profile that substantially conforms to an inner profile of a bottom surface of the conventional ink tray, and left and right side walls that extend upwards from left and right edges of the bottom surface, respectively. Bearing saddles are mounted on the left and right side walls adapted to receive bearings mounted on a shaft of a fountain roller, the ink tray insert being adapted to supply ink to the fountain roller in an ink transfer zone. A cross-track width of the ink tray insert between the left and right side walls is less than a cross-track width of the conventional ink tray.