Abstract: A method for digital printing in quantity, including the steps of providing a conveying unit adapted to convey printing substrates, setting a running velocity, providing a digital printer, providing a graphics file as input to the digital printer representing a motif to be reproduced on the printing substrates at a predefined resolution, calculating a decoration frequency for printing with decorative inks as a function of the predefined resolution and of the running velocity, calculating single material printing frequencies for each one of the material inks, calculating a synchronized printing frequency, calculating a scaling factor, calculating an actual printing frequency as a function of the scaling factors, calculating an actual printing resolution as a function of the actual frequency of material to be deposited and of the running velocity, and printing on the printing substrates at the actual printing resolution.

Abstract: A method for digital printing in quantity, including the steps of providing a conveying unit adapted to convey printing substrates, setting a running velocity, providing a digital printer, providing a graphics file as input to the digital printer representing a motif to be reproduced on the printing substrates at a predefined resolution, calculating a decoration frequency for printing with decorative inks as a function of the predefined resolution and of the running velocity, calculating single material printing frequencies for each one of the material inks, calculating a synchronized printing frequency, calculating a scaling factor, calculating an actual printing frequency as a function of the scaling factors, calculating an actual printing resolution as a function of the actual frequency of material to be deposited and of the running velocity, and printing on the printing substrates at the actual printing resolution.

Abstract: A unit for preparing an opening device for gluing to a respective sealed package of a pourable food product includes a conveyor for feeding the opening device along a predetermined path, a dispenser for depositing a layer of adhesive onto a portion of the opening device to be applied to a corresponding package; and a monitor for identifying, on the opening device, the position of the layer of adhesive with respect to the adhesive-receiving portion, and which generate a signal associated with the shape of the identified layer.