Abstract: The machine of the present invention carries out the operations for the quality control of the material printed on a paper or plastic band; the machine has, in the central part, the quality control equipment, preceded by a first part which is constituted of a spool un-winder and of a final part which is constituted of a spool re-winder. The first part, constituted of the un-winder, is comprised between the unwound material and a main drawer, the central part, which constitutes the quality control equipment, is comprised between the main drawer, the control level and an arrest compensator, secondary operations and re-winding.

Abstract: Feeding device, for feeding bands having different lengths and bound in a direction transverse to the feeding direction, includes a driving roller and a rubber-covered pressure roller, both being activated by respective brushless motors. The feeding device is controlled by an electronic drive that allows the pressure roller to rotate at a greater speed than the driving roller, allowing the sliding of the overlapping band above the base band during feed motion, maintaining constant the required tension and eliminating the rolling up of the overlaying band in correspondence of the transversal bind with the base band.

Abstract: Equipment for carrying out the quality control of material printed on paper or plastic bands, comprising a first part for un-winding the band, a central part for the control and correction of errors and a final part for re-winding the band, where the central part for the control and correction of errors has a device for acquiring images on the band, which is equipped with a moving system which moves it along said band, a band storage, a control device on which master images are loaded, where said control device is provided with a programme which confronts the images obtained by the device for acquiring images on the band with the master images previously loaded on said control device and which, if it encounters differences between the master images and the images acquired from the band, indicates one or more errors, stops the main driving motor and moves the device for acquiring images on the band after the error or the errors noted, in such a way that after the correction of the error or errors said device f

Abstract: Feeding device with motorized rollers for overlying bands (1 and 2) of paper or other material, having different lengths and bound in a transversal direction between them, constituted of a driving roller (R1) and of a rubber-covered pressure roller (R2) where the driving roller (R1) is activated by a first brushless motor (M1) and that the pressure roller (R2) is activated by a second brushless motor (M2) and where said feeding device is controlled by an electronic driving means that allows the pressure roller (R2) to rotate to a greater speed than the driving roller (R1) on the base of what is allowed by the bands of overlying material (1 and 2), allowing the sliding of the overlapping band (2) above the base band (1) during feed motion, maintaining constant the requested tension and eliminating the rolling up of the overlaying band/s in correspondence of the transversal bind with the base band.