Abstract: A quality-control device (200) includes: an illumination system (202) for illuminating one peripheral face of each folding box, an image capture device (204) for forming a multiple image of the respective peripheral faces of a bundle of folding boxes, an image processing system (206) for: i) detecting within the multiple image each peripheral end of the slots of each box that separate its adjacent flaps, ii) generating a data set indicative of the geometry of each peripheral end, and iii) analyzing the data set to determine the width of each peripheral end.

Abstract: A quality-control device (200) includes: an illumination system (202) for illuminating one peripheral face of each folding box, an image capture device (204) for forming a multiple image of the respective peripheral faces of a bundle of folding boxes, an image processing system (206) for: i) detecting within the multiple image each peripheral end of the slots of each box that separate its adjacent flaps, ii) generating a data set indicative of the geometry of each peripheral end, and iii) analyzing the data set to determine the width of each peripheral end.

Abstract: A method for registering at least two colors for a machine for printing plate elements equipped with at least two printing units: printing marks of different colors in spaced pairs on edges of the plate elements; detecting position errors between different marks of possibly the same color and comparing the position with respective theoretical relative positions; adjusting operation of the printing units to have both marks of a color overlie.

Abstract: A device for analyzing the topography of a surface (2) of a substrate (1) travelling on a substantially planar course with axes X, Y and Z defining an orthonormal frame of reference of the space. The surface (2) is substantially parallel to the plane XY. A device (10) for structured lighting of the surface (2) engages with a device (20) for measuring light backscattered by the surface (2) in order to analyze topography of the surface(2) during travel of the substrate (1). The lighting device (10) projecting a light beam (F) with an angle of incidence ‘a’ onto the surface (2), to form a plurality ‘n’ of luminous streaks (S1, S2, . . . Sn) thereon. Each luminous streak (S) forms an angle ‘b’ with the axis X1. The measurement device (20) includes a linear camera located in a plane P secant to the plane XY and the plane XZ, the intersection of the plane P with the plane XY forming angles.

Abstract: A device for adjusting the position of a printing unit with respect to a printing web in a rotary printing machine comprising a control unit operable for controlling the movement of the printing unit from a predefined initial position Pi to a predefined end position Pf by successive steps T. A vision system is operable for capturing images of the formats (F) which are successively printed on the printing web between the initial position Pi and the end position Pf. A calculation unit is operable for evaluating the images and for determining the position Popt of the printing unit at which the images are identical and additionally the position at which the grayscale of the pixels of each image are identical.