Abstract: An ultraviolet radiation drying oven includes a lamp with a localized opening for radiation to pass through and, associated with the opening, a mask mounted to move between a closed position and an open position, the mask being divided into two shutters and being coaxial with another mask also divided into two shutters.

Abstract: In a printing machine with object-carrier supports mounted to rotate, rotation drive units are used at printing stations and at processing stations to drive rotation of the object-carrier supports. The drive systems of the rotation drive units corresponding to the printing stations are separate from the drive systems of the rotation drive units corresponding to the processing stations. Applications include multicolor printing of flexible tubes.

Abstract: A printing machine including a turntable causes object supports to pass at least one printing station. According to the invention, a guard is mounted mobile with respect to the printing station, and under the control of a control device driven by a control unit accessible to the operator, can move from a retracted position, in which it leaves the turntable readily accessible, to an extended position, in which it overlaps the turntable. Application, in particular, to printing machines with screen print heads.

Abstract: A printing machine for printing objects liable to be stacked includes a circular printing table having a plurality of object stations regularly distributed at its perimeter each adapted to receive an object to be printed. By stepwise rotation about an axis, it moves the object stations successively to a loading station, to a plurality of workstations each including a printing system, and to an offloading station. A loading system at the loading station includes a presentation device which moves at least one stack of objects to the loading station and a transfer device operative between the presentation device and the printing table and equipped with at least one pick-up unit adapted to pick up an object from the stack on the presentation device and then to put this object down on one of the object stations of the printing table.