Abstract: A slab-shaped ceramic element comprises a first face which has at least a decorated zone and a second face intended to be laid in contact with a support surface. The first face is opposite the second face. The decorated zone is delimited by a plurality of edges. The first face has a plurality of control coloured areas arranged in sequence along at least one edge delimiting the decorated zone.

Abstract: A slab-shaped ceramic element comprises a first face which has at least a decorated zone and a second face intended to be laid in contact with a support surface. The first face is opposite the second face. The decorated zone is delimited by a plurality of edges. The first face has a plurality of control coloured areas arranged in sequence along at least one edge delimiting the decorated zone.

Abstract: A tool for positioning a scanning device provided with a spectrometer comprises a support having a resting zone suitable for being rested onto a surface, a fixing arrangement for fixing the scanning device to the tool. The support is so dimensioned as to leave uncovered an operative zone in which the spectrometer is movable for acquiring an image provided on a substrate, so that the spectrometer can acquire the image while the support is resting directly on the substrate. The tool further comprises a vision device comprising a video camera for recording the image and a control unit that controls the video camera, the control unit being programmed to recognise pre-established points of the image recorded by the video camera.

Abstract: A calibration target is printed by means of a printing device comprising a plurality of groups of printheads. The printheads of each group are fed with ink of the same color. The calibration target includes a plurality of colored zones that are intended to be subsequently processed. The printheads of each group further generate a series of control zones with the same nominal quantity of the corresponding ink. The control zones are free of overlapping between inks applied by different printheads. A parameter of each control zone is measured and the measured values of this parameter are compared to each other in order to assess whether the control zones exhibit print anomalies.

Abstract: A tool for positioning a scanning device provided with a spectrometer comprises: a support having a resting zone suitable for being rested onto a surface, a fixing arrangement for fixing the scanning device to the tool. The support is so dimensioned as to leave uncovered an operative zone in which the spectrometer is movable for acquiring an image provided on a substrate, so that the spectrometer can acquire the image while the support is resting directly on the substrate. The tool further comprises a vision device comprising a video camera for recording the image and a control unit that controls the video camera, the control unit being programmed to recognise pre-established points of the image recorded by the video camera.

Abstract: A method includes the step of printing a calibration target with a printing device, the printing device including a plurality of groups of printheads, the printheads of the same group being fed with ink of the same colour, the calibration target including a plurality of coloured zones that are intended to be subsequently processed, the method further including the steps of: generating a series of control zones printed by the printheads of a group with the same nominal quantity of the corresponding ink, the control zones being free of overlapping between inks applied by different printheads; measuring a parameter of each control zone; comparing the measured values of said parameter for evaluating whether the control zones exhibit print anomalies.