a laser process alignment measuring method applicable to a reel - to - reel manufacturing process including a laser process stage , wherein before at least one laser process stage , marks , patterns or surfaces are made with printing ink on the base or carrier material of the web , and on which the laser beam used can make a mark , for example , by removing or changing the printing ink , whereby at the laser process stage , another mark is plotted with the laser beam on the mark et al . printed with printing ink , and the position of the mark et al . printed with printing ink and the mark plotted with the laser are read optically to measure the alignment of the printing ink stage and the laser process stage .