Traditionally, the spot size at the centre and the edge of the marking area were different due to the artificial plane created by the fθ lens. ML-Z has solved this problem with 3-Axis laser control. High accuracy marking on any surface is guaranteed because of the uniform spot size.
Unlike conventional beam spot defocusing techniques, the ML-Z9500 Series can mark thin, thick, shallow or deep characters without changing coordinates or character sizes. This means that the ML-Z can mark uniform defocused characters at any point within the marking area.