An assembly (200, 200', 300, 300') for a printing head with a supporting body (210, 210', 310, 310') for fixing the assembly (200, 200', 300, 300') to the printing head, an actuator device (220, 220', 330, 330') with a main body (230, 230', 330, 330'), which is attached to the supporting body (210, 210', 310, 310'), wherein the actuator device (220, 220', 330, 330') comprises first means (240, 340) for the displacement of a tappet (241, 341) by means of which the tappet (241, 341) is attached to the main body (230, 230', 330, 330') and is displaceable in relation to the same upon actuation of said means, wherein the main body (230, 230', 330, 330') is cooperatingly connected with an element (250, 250', 350, 350') for the positioning of the actuator device (220, 220', 320, 320') in relation to the supporting body (210, 210', 310, 310'), characterized in that the assembly (200, 200', 300, 300') additionally comprises: - a screw joint, which is formed such that the main body (230, 230', 330, 330') is displaceably attachable to the supporting body (210, 210', 310, 310') via said screw joint, wherein the screw joint comprises a thread (250a, 250a', 350a, 350a') and a counter thread (250b, 250b', 350b, 350b'), which is screwable into the thread (250a, 250a', 350a, 350a'), - at least one elastic element (260, 360), - wherein the screw joint and the at least one elastic element (260, 360) for the positioning of the actuator device (220, 220', 320, 320') is cooperatingly formed such that the thread (250a, 250a', 350a, 350a') and the counter thread (250b, 250b', 350b, 350b') are tightened to each other with a biasing and that, upon actuation of the screw joint, displacement of the main body (230, 230', 330, 330') in relation to the supporting body (210, 210', 310, 310') along a translational direction is effected, whereinthe assembly (200, 200', 300, 300') additionally comprises: - a sliding joint for guiding the main body (230, 230', 330, 330') in relation to the supporting body (210, 210', 310, 310') along the translational direction, - wherein the elastic element (260, 360) is made so strong that the supporting body (210, 210', 310, 310') or the main body (230, 230', 330, 330') and the element (250, 250', 350, 350') are clamped against each other with such a strong pre-load that the actuation of the screw joint can only be carried out by means of a technical aid, preferably a suitable wrench. - a screw joint, which is formed such that the main body (230, 230', 330, 330') is displaceably attachable to the supporting body (210, 210', 310, 310') via said screw joint, wherein the screw joint comprises a thread (250a, 250a', 350a, 350a') and a counter thread (250b, 250b', 350b, 350b'), which is screwable into the thread (250a, 250a', 350a, 350a'), - at least one elastic element (260, 360), - wherein the screw joint and the at least one elastic element (260, 360) for the positioning of the actuator device (220, 220', 320, 320') is cooperatingly formed such that the thread (250a, 250a', 350a, 350a') and the counter thread (250b, 250b', 350b, 350b') are tightened to each other with a biasing and that, upon actuation of the screw joint, displacement of the main body (230, 230', 330, 330') in relation to the supporting body (210, 210', 310, 310') along a translational direction is effected, whereinthe assembly (200, 200', 300, 300') additionally comprises: - a sliding joint for guiding the main body (230, 230', 330, 330') in relation to the supporting body (210, 210', 310, 310') along the translational direction, - wherein the elastic element (260, 360) is made so strong that the supporting body (210, 210', 310, 310') or the main body (230, 230', 330, 330') and the element (250, 250', 350, 350') are clamped against each other with such a strong pre-load that the actuation of the screw joint can only be carried out by means of a technical aid, preferably a suitable wrench.