Abstract: Disclosed is a contact-pressure adjusting method and a contact-pressure adjusting system, each of which automatically adjusts the contact pressure between two rotors, for a liquid application machine including: a first rotor to which liquid is supplied; a second rotor to which the liquid is supplied from the first rotor; and a contact-pressure adjusting unit for adjusting the contact pressure between the first rotor and the second rotor. By using a temperature measuring unit, measured is: the temperature of at least one of the surfaces of the first and second rotors; the temperature of at least one of the liquid on the surface of the first rotor and the liquid on the surface of the second rotor; or the temperature of at least one of the vicinity of the first rotor and the vicinity of the second rotor. The contact-pressure adjusting unit is adjusted in accordance with the measured temperature.

Abstract: A flexographic printing machine including at least one printing unit with an ink roller mounted at one end to a first sliding support and a plate-holding roller mounted at one end to a second sliding support, and at least one guide member for guiding the movements of the supports in directions parallel to an imaginary line which perpendicularly intersects the axes of the ink and plate-holding rollers. In addition, first upper and lower screws are provided parallel to said line above and below the axes of the ink and plate-holding rollers in order to move the first support, and second upper and lower screws are provided parallel to the line above and below the axes of the ink and plate-holding rollers in order to move the second support.

Abstract: A device is provided for engaging and/or disengaging a roller with or from a first mating roller. The device includes a second mating roller, with which the roller is engaged, and with a basic unit, with which the roller can be moved to or away from the first mating roller in the circumferential direction of the second mating roller. A process for engaging and/or disengaging a roller of a printing press with or from a first mating roller is provided wherein the roller is engaged with a second mating roller and the roller is guided in the circumferential direction of the second mating roller in the state in which it is engaged with the second mating roller.