Cutting line processing device for plate-shaped object, cutting line processing method for plate-shaped object, manufacturing device for glass panel and manufacturing method for glass panel

The present invention relates to a cutting line processing device for a plate-shaped object, which includes: a plate-shaped object delivering amount-detecting mechanism, consisting of a roller for rotating in contact against a plate-shaped object being delivered, a signal-generating mechanism for generating a signal corresponding to the rotation amount of the roller, and a calculating mechanism for calculating the delivery amount of the plate-shaped object on the basis of the signal; a cutting line processing mechanism; a driving mechanism for making the cutting line processing mechanism move on the face of the plate-shaped object at the direction of inclining a predetermined angle relative to the delivery direction of the plate-shaped object so as to process a cutting line on the plate-shaped object; a breaking mechanism for breaking the plate-shaped object along the cutting line; a measuring mechanism for measuring the space between two adjacent opposite cutting lines formed by carrying out a cutting proces